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YAMAUCHI Tomoya
Graduate School of Maritime Sciences / Department of Maritime Sciences
Professor

Researcher basic information

■ Research Keyword
  • 放射線計測
  • Radiation measurement
  • Ion track
■ Research Areas
  • Energy / Quantum beam science

Research activity information

■ Award
  • Nov. 2006 日本放射線安全管理学会, 日本放射線安全管理学会最優秀論文賞, 論文「イメージングプレートにおけるPSL強度分布に着目した線種識別法の提案」
    ODA KEIJI, 塚原 一孝, 多田 英哲, 山内 知也
    International academic award

■ Paper
  • Reo Yamada, Atsushi Kimoto, Hayato Seiichi, Shunto Sadamitsu, Daisuke Kohinata, Masato Kanasaki, Tamon Kusumoto, Hisashi Kitamura, Satoshi Kodaira, Sachiko Tojo, Tomoya Yamauchi
    Last, Elsevier BV, Feb. 2026, Radiation Measurements, 191, 107584 - 107584, English
    [Refereed]
    Scientific journal

  • Anomalous Heat Generation from Nano-Composite Metal Powder Material in the Hydrogen Circumstances
    HASEGAWA Masahiko, KANASAKI Masato, HIGASHI Shuto, SEIICHI Hayato, YAMAUCHI Tomoya
    Last, Sep. 2025, Journal of Plasma and Fusion Research, 101(9) (9), 348 - 352, Japanese
    [Refereed][Invited]
    Scientific journal

  • Tomoya Yamauchi, Reo Yamada, Atsushi Kimoto, Hayato Seiichi, Shunto Sadamitsu, Daisuke Kohinata, Masato Kanasaki, Ichiro Sasaki, Shigeki Watanabe, Noriko S. Ishioka, Nobumasa Miyawaki
    Lead, Elsevier BV, Sep. 2025, Radiation Measurements, 187, 107491 - 107491, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Tamon Kusumoto, Yvette Ngono, Vincent Pacary, Quentin Raffy, Catherine Galindo, Philippe Peaupardin, Dominique Muller, Tomoya Yamauchi, Masato Kanasaki, Satoshi Kodaira
    Elsevier BV, Jul. 2025, Polymer Degradation and Stability, 111575, English
    [Refereed]
    Scientific journal

  • Tomoya Yamauchi, Yutaka Mori, Shuto Higashi, Hayato Seiichi, Masahiko Hasegawa, Akito Takahashi, Akira Taniike, Masato Kanasaki
    Abstract The present study aims to detect helium-3 in nickel-based metal nano-composites doped with zirconia, which exhibited anomalous heat generation when exposed to hydrogen gas at approximately 450 °C. Two complementary analytical techniques were employed: nuclear reaction analysis utilizing 1.4 MeV deuteron beams from a tandem accelerator, and thermal desorption spectrometry using a quadrupole mass spectrometer. Both methods successfully detected helium-3 in the samples. Given the extreme rarity of this isotope, its presence strongly suggests the occurrence of nuclear reactions within the nickel-containing materials. These findings lend support to the 4 hydrogen/tetrahedral symmetric condensate (4H/TSC) model, which uniquely predicts helium-3 as one of the primary reaction products.
    Lead, IOP Publishing, Feb. 2025, Japanese Journal of Applied Physics, 64(1) (1), 017004 - 017004
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Masato Kanasaki, Kouta Mune, Taiyo Itoh, Ken Yasuda, Bunta Ishihara, Tamon Kusumoto, Satoshi Kodaira, Rémi Barillon, Tomoya Yamauchi
    Last, Elsevier BV, Sep. 2024, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 554, 165409 - 165409, English
    [Refereed]
    Scientific journal

  • Ken Yasuda, Yutaka Mori, Tamon Kusumoto, Shunto Sadamitsu, Bunta Ishihara, Daisuke Kohinata, Masato Kanasaki, Satoshi Kodaira, Rémi Barillon, Tomoya Yamauchi
    Last, Elsevier BV, May 2024, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 550, 165294 - 165294, English
    [Refereed]
    Scientific journal

  • Tamon Kusumoto, Koji Kuraoka, Yutaka Mori, Masato Kanasaki, Satoshi Kodaira, Rémi Barillon, Tomoya Yamauchi
    Last, Elsevier BV, Mar. 2024, Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 548, 165226 - 165226, English
    [Refereed]
    Scientific journal

  • Tamon Kusumoto, Yutaka Mori, Satoshi Kodaira, Masato Kanasaki, Rémi Barillon, Tomoya Yamauchi
    Last, Elsevier BV, Feb. 2024, Applied Radiation and Isotopes, 204, 111125 - 111125, English
    [Refereed]
    Scientific journal

  • Tamon Kusumoto, Yutaka Mori, Satoshi Kodaira, Masato Kanasaki, Rémi Barillon, Tomoya Yamauchi
    Last, Elsevier BV, Feb. 2024, Applied Radiation and Isotopes, 204, 111100 - 111100, English
    [Refereed]
    Scientific journal

  • Igor Yu. Skobelev, Sergey N. Ryazantsev, Roman K. Kulikov, Maksim V. Sedov, Evgeny D. Filippov, Sergey A. Pikuz, Takafumi Asai, Masato Kanasaki, Tomoya Yamauchi, Satoshi Jinno, Masato Ota, Syunsuke Egashira, Kentaro Sakai, Takumi Minami, Yuki Abe, Atsushi Tokiyasu, Hideki Kohri, Yasuhiro Kuramitsu, Youichi Sakawa, Yasuhiro Miyasaka, Kotaro Kondo, Akira Kon, Akito Sagisaka, Koichi Ogura, Alexander S. Pirozhkov, Masaki Kando, Hiromitsu Kiriyama, Tatiana A. Pikuz, Yuji Fukuda
    The generation of highly charged ions in laser plasmas is usually associated with collisional ionization processes that occur in electron–ion collisions. An alternative ionization channel caused by tunnel ionization in an optical field is also capable of effectively producing highly charged ions with ionization potentials of several kiloelectronvolts when the laser intensity q > 1020 W/cm2. It is challenging to clearly distinguish the impacts of the optical field and collisional ionizations on the evolution of the charge state of a nonequilibrium plasma produced by the interaction of high-intensity, ultrashort PW-class laser pulses with dense matter. In the present work, it is shown that the answer to this question can be obtained in some cases by observing the X-ray spectral lines caused by the transition of an electron into the K-shell of highly charged ions. The time-dependent calculations of plasma kinetics show that this is possible, for example, if sufficiently small clusters targets with low-density background gas are irradiated. In the case of Ar plasma, the limit of the cluster radius was estimated to be R0 = 0.1 μm. The calculation results for argon ions were compared with the results of the experiment at the J-KAREN-P laser facility at QST-KPSI.
    MDPI AG, Nov. 2023, Photonics, 10(11) (11), 1250 - 1250
    Scientific journal

  • Takafumi Asai, Chihiro Inoue, Satoshi Jinno, Nobuko Kitagawa, Satoshi Kodaira, Kunihiro Morishima, Yuji Fukuda, Tomoya Yamauchi, Masato Kanasaki
    Abstract We have developed a measurement method for laser-accelerated multi-hundred-MeV-class protons using an emulsion cloud chamber (ECC), which consists of a stack of nuclear emulsion films and scatterer plates. Based on multiple Coulomb scattering (MCS) theory depending on the incident energy of protons, we have constructed a regression model to inversely estimate the incident energy by means of support vector regression (SVR) with a radial basis function. The prediction accuracy was approximately 10% (standard deviation) for protons with energies up to 0.3 GeV in a 25 layer ECC with 0.5 mm thick tungsten plates, corresponding to a 2 cm thick compact detector.
    IOP Publishing, Jan. 2023, Japanese Journal of Applied Physics, 62(1) (1), 016506 - 016506, English
    [Refereed]
    Scientific journal

  • Satoshi Jinno, Masato Kanasaki, Takafumi Asai, Ryutaro Matsui, Alexander S Pirozhkov, Koichi Ogura, Akito Sagisaka, Yasuhiro Miyasaka, Nobuhiko Nakanii, Masaki Kando, Nobuko Kitagawa, Kunihiro Morishima, Satoshi Kodaira, Yasuaki Kishimoto, Tomoya Yamauchi, Mitsuru Uesaka, Hiromitsu Kiriyama, Yuji Fukuda
    Multi-MeV high-purity proton acceleration by using a hydrogen cluster target irradiated with repetitive, relativistic intensity laser pulses has been demonstrated. Statistical analysis of hundreds of data sets highlights the existence of markedly high energy protons produced from the laser-irradiated clusters with micron-scale diameters. The spatial distribution of the accelerated protons is found to be anisotropic, where the higher energy protons are preferentially accelerated along the laser propagation direction due to the relativistic effect. These features are supported by three-dimensional (3D) particle-in-cell (PIC) simulations, which show that directional, higher energy protons are generated via the anisotropic ambipolar expansion of the micron-scale clusters. The number of protons accelerating along the laser propagation direction is found to be as high as 1.6 [Formula: see text] [Formula: see text] 10[Formula: see text]/MeV/sr/shot with an energy of 2.8 [Formula: see text] MeV, indicating that laser-driven proton acceleration using the micron-scale hydrogen clusters is promising as a compact, repetitive, multi-MeV high-purity proton source for various applications.
    Oct. 2022, Scientific reports, 12(1) (1), 16753 - 16753, English, International magazine
    Scientific journal

  • Automatization of cluster size measurement system for laser-driven ion acceleration
    Takashi Kaji, Takafumi Asai, Satoshi Jinno, Tomoya Yamauchi, Yuji Fukuda, Masato Kanasaki
    Jul. 2022, Review of Graduate School of Maritime Sciences, Kobe University, 19, 15 - 22, Japanese
    Research institution
    Link to Kobe Univ. Repository (Kernel)

  • Features of home-made PADC detectors for heavy ions
    Taiyo Ito, Tamon Kusumoto, Masato KANASAKI, Satoshi Kodaira, Ippei Ishikawa, Tomoya Yamauchi
    Last, Jul. 2022, Review of Graduate School of Maritime Sciences, Kobe University, 19, 32 - 43
    Research institution
    Link to Kobe Univ. Repository (Kernel)

  • Sensitization of PADC detectors to heavy ions by carbon dioxide treatment
    Kouta Mune, Tamon Kusumoto, Masato KANASAKI, Satoshi Kodaira, Tomoya Yamauchi
    Corresponding, Jul. 2022, Review of Graduate School of Maritime Sciences, Kobe University, 19, 23 - 31, Japanese
    Research institution
    Link to Kobe Univ. Repository (Kernel)

  • Y. Kuramitsu, T. Minami, T. Hihara, K. Sakai, T. Nishimoto, S. Isayama, Y. T. Liao, K. T. Wu, W. Y. Woon, S. H. Chen, Y. L. Liu, S. M. He, C. Y. Su, M. Ota, S. Egashira, A. Morace, Y. Sakawa, Y. Abe, H. Habara, R. Kodama, L. N. K. Döhl, N. Woolsey, M. Koenig, H. S. Kumar, N. Ohnishi, M. Kanasaki, T. Asai, T. Yamauchi, K. Oda, Ko. Kondo, H. Kiriyama, Y. Fukuda
    AbstractGraphene is known as an atomically thin, transparent, highly electrically and thermally conductive, light-weight, and the strongest 2D material. We investigate disruptive application of graphene as a target of laser-driven ion acceleration. We develop large-area suspended graphene (LSG) and by transferring graphene layer by layer we control the thickness with precision down to a single atomic layer. Direct irradiations of the LSG targets generate MeV protons and carbons from sub-relativistic to relativistic laser intensities from low contrast to high contrast conditions without plasma mirror, evidently showing the durability of graphene.
    Springer Science and Business Media LLC, Feb. 2022, Scientific Reports, 12(2346) (2346), English
    [Refereed]
    Scientific journal

  • Takamasa Hihara, Masato Kanasaki, Takafumi Asai, Tamon Kusumoto, Satoshi Kodaira, Hiromitsu Kiriyama, Keiji Oda, Tomoya Yamauchi, Wei-Yen Woon, Yasuhiro Kuramitsu, Yuji Fukuda
    AbstractA new diagnosis method for the discriminative detection of laser-accelerated multi-MeV carbon ions from background oxygen ions utilizing solid-state nuclear track detectors (SSNTDs) is proposed. The idea is to combine two kinds of SSNTDs having different track registration sensitivities: Bisphenol A polycarbonate detects carbon and the heavier ions, and polyethylene terephthalate detects oxygen and the heavier ions. The method is calibrated with mono-energetic carbon and oxygen ion beams from the heavy ion accelerator. Based on the calibration data, the method is applied to identify carbon ions accelerated from multilayered graphene targets irradiated by a high-power laser, where the generation of high-energy high-purity carbon ions is expected. It is found that 93 ± 1% of the accelerated heavy ions with energies larger than 14 MeV are carbons. The results thus obtained support that carbon-rich heavy ion acceleration is achieved.
    Springer Science and Business Media LLC, Dec. 2021, Scientific Reports, 11(1) (1), 16283 - 16283, English, International magazine
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Tamon Kusumoto, Masato Kanasaki, Ippei Ishikawa, Rémi Barillon, Yoshihide Honda, Sachiko Tojo, Satoshi Kodaira, Tomoya Yamauchi
    Last, Elsevier BV, Sep. 2021, Radiation Measurements, 147, 106645 - 106645, English
    [Refereed]
    Scientific journal

  • Tomoya Yamauchi, Masato Kanasaki, Rémi Barillon
    Lead, Aug. 2021, Polymers, 13(16) (16), 2665 - 2665, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Masato Kanasaki, Keita Sakamoto, Takafumi Asai, Satoshi Jinno, Satoshi Kodaira, Tomoya Yamauchi, Keiji Oda, Yuji Fukuda
    Elsevier BV, Nov. 2020, High Energy Density Physics, 37, 100852 - 100852, English
    [Refereed]
    Scientific journal

  • Modified structure along high-energy ion tracks in poly(allyl diglycol carbonate) PADC detectors and their detection thresholds
    Tomoki Okada, Tamon Kusumoto, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Tomoya Yamauchi
    Last, Sep. 2020, Review of Graduate School of Maritime Sciences, Kobe University17, 17, 67 - 75, Japanese
    Research institution
    Link to Kobe Univ. Repository (Kernel)

  • Tamon Kusumoto, Rémi Barillon, Shogo Okada, Tomoya Yamauchi, Satoshi Kodaira
    Elsevier BV, Aug. 2020, Radiation Measurements, 138, 106445 - 106445, English
    [Refereed]
    Scientific journal

  • Tamon Kusumoto, Shogo Okada, Hisaya Kurashige, Kazuo Kobayashi, Michel Fromm, Quentin Raffy, Nicolas Ludwig, Masato Kanasaki, Keiji Oda, Yoshihide Honda, Sachiko Tojo, Jean Emmanuel Groetz, Ryo Ogawara, Satoshi Kodaira, Rémi Barillon, Tomoya Yamauchi
    May 2020, Radiation Physics and Chemistry, 170(108628) (108628), English
    [Refereed]
    Scientific journal

  • Masato Kanasaki, Tomoya Yamauchi, Keiji Oda, Yuji Fukuda
    2020, PROGRESS IN ULTRAFAST INTENSE LASER SCIENCE XV, 136, 133 - 147, English
    [Refereed]
    In book

  • Tamon Kusumoto, Rémi Barillon, Tomoya Yamauchi
    Dec. 2019, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 461, 260 - 266, English
    [Refereed]
    Scientific journal

  • Tamon Kusumoto, Morikazu Sakai, Atsushi Yoshida, Tadashi Kambara, Yoshiyuki Yanagisawa, Satoshi Kodaira, Keiji Oda, Masato Kanasaki, Koji Kuraoka, Rémi Barillon, Tomoya Yamauchi
    Elsevier, Dec. 2019, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 460, 240 - 243, English
    [Refereed]
    Scientific journal

  • Development of Micron-Scale Hydrogen Cluster Generation System and High-Repetitive Generation of Multi-MeV, Pure Proton Beams
    JINNO Satoshi, KANASAKI Masato, MATSUI Ryutaro, KISHIMOTO Yasuaki, ODA Keiji, YAMAUCHI Tomoya, UESAKA Mitsuru, KIRIYAMA Hiromitsu, FUKUDA Yuji
    レーザー駆動イオン加速技術において,ミクロンサイズの水素クラスターのクーロン爆発を利用して,高繰 り返しで,multi-MeV の純陽子線を発生させる方法を提案した.本研究において,クライオスタットで冷却した 高圧水素ガスをパルスバルブに接続した円錐ノズルを介して真空中に噴射することによりミクロンサイズの水素 クラスターターゲットを発生させる装置を開発した.水素クラスターのサイズ分布は,散乱光の角度分布から Mie 散乱理論に基づき,Tikhonov 正則化法を利用して数学的に見積もった.25 K,6 MPa の状態の水素を噴射し た場合,クラスターの最大サイズは 2.15±0.1 μm であると見積もられた.その上で,J-KAREN-P 施設において水 素クラスターをターゲットとした 0.1 Hz 高繰り返し陽子加速の実証実験を行った.トムソンパラボラスペクトロ メーターを用いたエネルギー測定では,最大 7 MeV の純陽子線を観測した.高出力レーザーパルスとミクロンサ イズ水素クラスターの相互作用過程に関する三次元 Particle-in-Cell(PIC)シミュレーションにおいては,レー ザー伝搬方向に加速される 300 MeV におよぶ高指向性の準単色陽子発生が予測され,本手法は,将来的に高繰り 返しの高エネルギー高純度陽子源の有力候補になる可能性を秘めている.
    プラズマ・核融合学会, Oct. 2019, Journal of Plasma and Fusion Research, 95(10) (10), 483 - 489, Japanese
    [Refereed]
    Scientific journal

  • Ken HAMANO, Tamon KUSUMOTO, Masato KANASAKI, Satoshi KODAIRA, Keiji ODA, Tomoya YAMAUCHI
    Sep. 2019, Review of Graduate School of Maritime Sciences, Kobe University, 16, 56 - 61, Japanese
    Research institution
    Link to Kobe Univ. Repository (Kernel)

  • Akihiro Chiba, Tamon Kusumoto, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Tomoya Yamauchi
    Sep. 2019, Review of Graduate School of Maritime Sciences, Kobe University, 16, 46 - 55, Japanese
    Research institution
    Link to Kobe Univ. Repository (Kernel)

  • Keita Sakamoto, Masato Kanasaki, Kohsaku Morii, Satoshi Jinno, Satoshi Kodaira, Tomoya Yamauchi, Keiji Oda, Yuji Fukuda
    Sep. 2019, Review of Graduate School of Maritime Sciences, Kobe University, 16, 34 - 40, Japanese
    Research institution
    Link to Kobe Univ. Repository (Kernel)

  • Takafumi ASAI, Masato KANASAKI, Satoshi JINNO, Nobuko KITAGAWA, Nobumichi SHUTOH, Satoshi KODAIRA, Tomoya YAMAUCHI, Keiji ODA, Kunihiro MORISHIMA, Yuji FUKUDA
    Sep. 2019, Review of Graduate School of Maritime Sciences, Kobe University, 16, 27 - 33, Japanese
    Research institution
    Link to Kobe Univ. Repository (Kernel)

  • Kazuki SHIMIZU, Masato KANASAKI, Satoshi JINNO, Keiji ODA, Tomoya YAMAUCHI, Yuichi FURUYAMA, Akira TANIIKE, Yuji FUKUDA
    Sep. 2019, Review of Graduate School of Maritime Sciences, Kobe University, 16, 20 - 26, Japanese
    Research institution
    Link to Kobe Univ. Repository (Kernel)

  • Takafumi Asai, Masato Kanasaki, Satoshi Jinno, Nobuko Kitagawa, Nobumichi Shutoh, Satoshi Kodaira, Tomoya Yamauchi, Keiji Oda, Kunihiro Morishima, Yuji Fukuda
    ELSEVIER, Jul. 2019, High Energy Density Physics, 32, 44 - 50, English
    [Refereed]
    Scientific journal

  • Tamon Kusumoto, Yvette Ngono-Ravache, Emmanuel Balanzat, Catherine Galindo, Nicolas Ludwig, Quentin Raffy, Tomoya Yamauchi, Satoshi Kodaira, Rémi Barillon
    Elsevier, Jun. 2019, Polymer Degradation and Stability, 164, 102 - 108, English
    [Refereed]
    Scientific journal

  • YAMAUCHI TOMOYA, Tamon Kusumoto
    A modified structure around latent tracks in polymeric etched track detectors has been examined. A series of quantitative analyses on the changes in the density of each functional group composing the polymers has provided the chemical damage parameters of the damage density. These include the number of losses of considered functional groups per unit distance of the track length
    Japan Radioisotope Association, Apr. 2019, RADIOISOTOPES, 68(4) (4), 247 - 258, Japanese
    [Refereed][Invited]
    Scientific journal

  • Tamon Kusumoto, Yutaka Mori, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Rémi Barillon, Tomoya Yamauchi
    Elsevier, Apr. 2019, Radiation Physics and Chemistry, 157, 60 - 64, English
    [Refereed]
    Scientific journal

  • Michel Fromm, Satoshi Kodaira, Tamon Kusumoto, Rémi Barillon, Tomoya Yamauchi
    Elsevier, Mar. 2019, Polymer Degradation and Stability, 161, 213 - 224, English
    [Refereed]
    Scientific journal

  • FUKUDA Yuji, KANASAKI Masato, JINNO Satoshi, MATSUI Ryutaro, Kinoshita Masaharu, PIROZHKOV Alexander S., SAGISAKA Akito, OGURA Koichi, MIYASAKA Yasuhiro, KONDO Kotaro, ASAI Takafumi, SHIMIZU Kazuki, SAKAMOTO Keita, KITAGAWA Nobuko, MORISHIMA Kunihiro, KODAIRA Satoshi, ODA Keiji, YAMAUCHI Tomoya, UESAKA Mitsuru, KONDO Kiminori, KAWACHI Tetsuya, KANDO Masaki, KIRIYAMA Hiromitsu, KISHIMOTO Yasuaki
    The Physical Society of Japan, 2019, Meeting Abstracts of the Physical Society of Japan, 74.2, 622 - 622, Japanese

  • Jinno S., Kanasaki M., Takano Y., Morii K., Asai T., Sakamoto Y., Shimizu K., Pirozhkov A., Sagisaka A., Ogura K., Miyasaka Y., Morishima K., Kodaira S., Matsui R., Kishimoto Y., Oda K., Yamauchi T., Uesaka M, Kondo K., Kawachi T., Kando M., Kiriyama H., Fukuda Y.
    The Physical Society of Japan, 2019, Meeting Abstracts of the Physical Society of Japan, 74.1, 608 - 608, Japanese

  • Tamon Kusumoto, Ziad EL Bitar, Shogo Okada, Pierre Gillet, Nicolas Arbor, Masato Kanasaki, Yutaka Mori, Keiji Oda, Abdel Mjid Nourreddine, Hisaya Kurashige, Michel Fromm, Pierre Cloutier, Andrew D. Bass, Léon Sanche, Satoshi Kodaira, Rémi Barillon, Tomoya Yamauchi
    Elsevier, Nov. 2018, Radiation Measurements, 118, 50 - 53, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Tamon Kusumoto, Michel Fromm, Pierre Cloutier, Andrew D. Bass, Léon Sanche, Rémi Barillon, Tomoya Yamauchi
    American Chemical Society Publication, Sep. 2018, Journal of Physical Chemistry C, 122(36) (36), 21056 - 21061, English
    [Refereed]
    Scientific journal

  • N. Ludwig, T. Kusumoto, C. Galindo, P. Peaupardin, S. Pin, J. P. Renault, D. Muller, T. Yamauchi, S. Kodaira, R. Barillon, Q. Raffy
    Elsevier, Sep. 2018, Radiation Measurements, 116, 55 - 59, English
    [Refereed]
    Scientific journal

  • Tomoya Yamauchi, Tamon Kusumoto, Takuya Ueno, Yutaka Mori, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Rémi Barillon
    Elsevier, Sep. 2018, Radiation Measurements, 116, 51 - 54, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Morikazu Sakai, Tamon Kusumoto, Masato Kanasaki, Keiji Oda, YAMAUCHI TOMOYA
    The radial dose distribution model explains the track structure as a result of interaction of delta-rays with the sensitive parts of the detector medium. In this model, the effective charge, Zeff, is an important parameter which expresses the mean equilibrium charge states of projectiles in the stopping media. The Effective charge formula by Heckman is widely used in the field
    Graduate School of Maritime Sciences, Kobe University, Jul. 2018, Review of Graduate School of Maritime Sciences, Kobe University, 15, 31 - 42, Japanese
    Research institution
    Link to Kobe Univ. Repository (Kernel)

  • Fukuda Yuji, Kanasaki Masato, Jinno Satoshi, Pirozhkov Alexander S., Sagisaka Akito, Ogura Koichi, Miyasaka Yasuhiro, Nakanii Nobuhiko, Uno Masataka, Takano Yuta, Morii Kousaku, Asai Takafumi, Sakamoto Keita, Shimizu Kazuki, Morishima Kunihiro, Kodaira Satoshi, Okamoto Yuki, Matsui Ryutaro, Kishimoto Yasuaki, Oda Keiji, Yamauchi Tomoya, Uesaka Mitsuru, Kondo Kiminori, Kawachi Tetsuya, Kando Masaki, Kiriyama Hiromitsu
    The Physical Society of Japan, 2018, Meeting Abstracts of the Physical Society of Japan, 73.1, 560 - 560, Japanese

  • KANASAKI MASATO, ODA KEIJI, YAMAUCHI TOMOYA, FUKUDA YUJI
    Nov. 2017, 放射線化学, (104) (104), 35 - 39, Japanese
    [Refereed]
    Scientific journal

  • Strongly Enhanced Childhood Thyroid Cancers due to the Catastrophe of TEPCO Fukushima Dai-ichi Nuclear Power Plant in 2011
    YAMAUCHI TOMOYA
    The History of Science Society of Japan, Oct. 2017, Journal of History of Science, Japan, 56(283) (283), 234 - 244, Japanese
    [Invited]
    Scientific journal

  • SAITO SACHIKO, YAMAUCHI TOMOYA
    Amounts of radioactive cesium, Cs-137 and Cs-134, in 24 h urine of 37 children have been determined using an HP-Ge detector, in Fukushima Prefecture between February 2014 and March 2016. As comparisons, those of 25 children have been also measured who live in Western Japan from September 2016 to March 2017, and that of one child in Ibaraki Prefecture from April 2014 to January
    Graduate School of Maritime Sciences, Kobe University, Jul. 2017, Review of Graduate School of Maritime Sciences, Kobe University, 14, 23 - 30, Japanese
    Research institution
    Link to Kobe Univ. Repository (Kernel)

  • Tamon Kusumoto, Yutaka Mori, Masato Kanasaki, Keiji Oda, YAMAUCHI TOMOYA, Yoshihide Honda, Sachiko Tojo, Michel Fromm, Jean-Emmanuel Groetz, Satoshi Kodaira, Hisashi Kitamura, Remi Barillon
    PADC 薄膜に 28 MeV 電子線および軟 X 線を照射し、実効的なトラックサイズやG 値等の化学的損傷パラメータを評価した。エーテル基の相対吸光度はフルエンスの増加に伴って線形的に減少したが、カルボニル基およびメチン基のそれは 1.6 × 10^15electrons/cm^2 以上の領域でのみ減少した。照射後に新たな端点として生成するヒドロキシル基の生成率も同フルエンス以上の領域で減少することも確認した。同様の傾向が超軟 X 線照射時にも確認された。28 MeV 電子線照射時のエーテル基損失のG 値はガンマ線のそれとほぼ同程度であり、70 MeV のプロトンの半分程度であった。これはプロトンの飛跡に沿った損傷が元の構造に戻る再結合を抑制していることを示唆する結果であった。カルボニル基損失のG値は’“Single-hit zone” では 10
    Japanese Socoety of Radiation Chemistry, Apr. 2017, 放射線化学, 103, 41 - 45, Japanese
    [Refereed][Invited]
    Symposium

  • Studies on latent tracks in PADC nuclear Track detector
    Tamon Kusumoto, Yoshitaka Terashita, Yutaka Mori, Masato Kanasaki, Keiji Oda, YAMAUCHI TOMOYA, Satoshi Kodaira, Hisashi Kitamura, Yoshihide Honda, Sachiko Tojo, Ziad EL Bitar, Nicolas Arbor, Quentin Raffy, Remi Barillon, Jean-Emmanuel Groetz, Michel Fromm
    A review is given for our recent studies on latent track structure in Poly(allyl diglycol carbonate), PADC, which is the most sensitive etched track detector. We have investigated the irradiation effects of protons and heavy ions, covering the stopping power ranging from 1.2 to 12,000 eV/nm, as well as gamma rays from Co-60 with an average LET of about 0.2 eV/nm and 28 MeV elec
    The Japan Society of Applied Physics, Ionization Radiation Division, Feb. 2017, Ionization Radiation, 42(3) (3), 73 - 82, Japanese
    [Refereed][Invited]
    Scientific journal

  • Development of PNTDs synthesized from monomers with different molecular length and analysis of molecular damages by heavy ion
    Hajime Kawashima, Satoshi Kodaira, Daisuke Ihara, Nakahiro Yasuda, Tamon Kusumoto, Yutaka Mori, YAMAUCHI TOMOYA, Keiichi Kobayashi, Eric Benton
    The Japan Society of Applied Physics, Ionization Radiation Division, Jan. 2017, Ionizing Radiation, 42(3) (3), 83 - 90, Japanese
    [Refereed][Invited]
    Scientific journal

  • Tamon KUSUMOTO, Yutaka MORI, Masato KANASAKI, Keiji ODA, Satoshi KODAIRA, Yoshihide HONDA, Sachiko TOJO, Rémi BARILLON, YAMAUCHI TOMOYA
    The latent track structure of 28 MeV electrons in poly(allyl diglycol carbonate), PADC, has been investigated using FT-IR spectral method. The density of ether decreases linearly with increasing the fluence. Chemical damage parameters of effective track radius, damage density and radiation chemical yield, for loss of ether are evaluated as 0.023 nm, 0.01 scissions/nm and 19 sci
    日本物理学会, Nov. 2016, JPS Conference Proceedings, Proceedings of International Symposium on Radiation Detectors and Their Uses (ISRD2016), 11, 010001, 1 - 6, English
    [Refereed]
    International conference proceedings

  • K. Oda, T. Nakayama, K. Umetani, M. Kajihara, T. Yamauchi
    Sep. 2016, RADIATION PROTECTION DOSIMETRY, 170(1-4) (1-4), 158 - 161, English
    [Refereed]
    Scientific journal

  • M. Nishiuchi, H. Sakaki, T. Zh. Esirkepov, K. Nishio, T. A. Pikuz, A. Ya. Faenov, I. Yu. Skobelev, R. Orlandi, A. S. Pirozhkov, A. Sagisaka, K. Ogura, M. Kanasaki, H. Kiriyama, Y. Fukuda, H. Koura, M. Kando, T. Yamauchi, Y. Watanabe, S. V. Bulanov, K. Kondo, K. Imai, S. Nagamiya
    Apr. 2016, PLASMA PHYSICS REPORTS, 42(4) (4), 327 - 337, English
    [Refereed]
    Scientific journal

  • 福島県県民健康調査のデータをどう読むべきか 福島県内の甲状腺被ばく線量はチェルノブイリ周辺国のそれと比べても決して低くない
    YAMAUCHI TOMOYA
    消費者法ニュース発行会議, Apr. 2016, CONSUMER LAW NEWS, 107(107) (107), 144 - 147, Japanese
    [Invited]
    Scientific journal

  • Tamon Kusumoto, Yutaka Mori, Masato Kanasaki, Ryunosuke Ikenaga, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, Rémi Barillon, Tomoya Yamauchi
    ELSEVIER, Apr. 2016, Radiation Measurements, 87, 35 - 42, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • M. Kanasaki, S. Jinno, H. Sakaki, K. Kondo, K. Oda, T. Yamauchi, Y. Fukuda
    Mar. 2016, PLASMA PHYSICS AND CONTROLLED FUSION, 58(3) (3), 034013, English
    [Refereed]
    Scientific journal

  • Tamon Kusumoto, Yutaka Mori, Masato Kanasaki, Takuya Ueno, Yuka Kameda, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, Rémi Barillon, Tomoya Yamauchi
    ELSEVIER, Dec. 2015, Radiation Measurements, 83, 59 - 62, English
    [Refereed]
    Scientific journal

  • YAMAUCHI TOMOYA, Tamon Kusumoto, Kenya Matsukawa, Yutaka Mori, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, K. Yoshida, Y. Yanagisawa, T Kambara, A. Yoshida
    RIKEN Nishina Center for Accelerator-Base Center, Dec. 2015, RIKEN Accelerator Progress Report 2014 Vol. 48, 48, 254, English
    [Refereed]
    Research institution

  • Masato Kanasaki, Satoshi Jinno, Hironao Sakaki, Anatoly Ya. Faenov, Tatiana A. Pikuz, Mamiko Nishiuchi, Hiromitsu Kiriyama, Masaki Kando, Akira Sugiyama, Kiminori Kondo, Ryutaro Matsui, Yasuaki Kishimoto, Kunihiro Morishima, Yukinobu Watanabe, Clare Scullion, Ashley G. Smyth, Aaron Alejo, Domenico Doria, Satyabrata Kar, Marco Borghesi, Keiji Oda, Tomoya Yamauchi, Yuji Fukuda
    Dec. 2015, RADIATION MEASUREMENTS, 83, 12 - 14, English
    [Refereed]
    Scientific journal

  • Remi Barillon, Tomoya Yamauchi, Yutaka Mori, Quentin Raffy
    Dec. 2015, RADIATION MEASUREMENTS, 83, 1 - 4, English
    [Refereed][Invited]
    Scientific journal

  • TAMON KUSUMOTO, YUTAKA MORI, MASATO KANASAKI, TAKUYA UENO, YUKA KAMEDA, KEIJI ODA, SATOSHI KODAIRA, HISASHI KITAMURA, YAMAUCHI TOMOYA
    Modified structure along ion tracks in poly(allyl diglycol carbonate), PADC, films exposed to protons and heavy ions, He, C, Ne, Ar, Fe, Kr and Xe, in air has been examined by means of FT-IR spectroscopy, covering the stopping power ranging from 10 to 12000 keV/μm. The damage density for the loss of CH groups and the amount of formed OH groups along each track are estimated and
    Graduate School of Maritime Sciences, Kobe University, Sep. 2015, Review of Graduate School of Maritime Sciences, Kobe University, 12, 30 - 38, Japanese
    Research institution
    Link to Kobe Univ. Repository (Kernel)

  • Design of laser-accelerated ion beam measurement system considering photo-neutrons effects
    Masato Kanasaki, Satoshi Jinno, Kininori Kondo, Hironao Sakaki, Yuji Fukuda, Keiji Oda, Tomoya Yamauchi
    応用物理学会放射線分科会, Apr. 2015, Ionizing Radiation, 40(3) (3), 133 - 136, Japanese
    [Refereed][Invited]
    Scientific journal

  • M. Nishiuchi, H. Sakaki, T. Zh Esirkepov, K. Nishio, T. A. Pikuz, A. Ya Faenov, I. Yu Skobelev, R. Orlandi, H. Sako, A. S. Pirozhkov, K. Matsukawa, A. Sagisaka, K. Ogura, M. Kanasaki, H. Kiriyama, Y. Fukuda, H. Koura, M. Kando, T. Yamauchi, Y. Watanabe, S. V. Bulanov, K. Kondo, K. Imai, S. Nagamiya
    Mar. 2015, PHYSICS OF PLASMAS, 22(3) (3), 033107 (1 - 8), English
    [Refereed]
    Scientific journal

  • M. Nishiuchi, H. Sakaki, T. Zh. Esirkepov, K. Nishio, T. A. Pikuz, A. Ya. Faenov, A. S. Pirozhkov, A. Sagisaka, K. Ogura, M. Kanasaki, H. Kiriyama, Y. Fukuda, M. Kando, T. Yamauchi, Y. Watanabe, S. V. Bulanov, K. Kondo, K. Imai, S. Nagamiya
    2015, RESEARCH USING EXTREME LIGHT: ENTERING NEW FRONTIERS WITH PETAWATT-CLASS LASERS II, 9515, 95151D, English
    [Refereed]
    International conference proceedings

  • Ohashi Kai, Nakayama Takahiro, Miyata Takahisa, Yamauchi Tomoya, Oda Keiji
    Kobe University, Jul. 2014, Review of Graduate School of Maritime Sciences, Kobe University, 11, 39 - 44, Japanese
    Link to Kobe Univ. Repository (Kernel)

  • M. Nishiuchi, H. Sakaki, S. Maeda, A. Sagisaka, A. S. Pirozhkov, T. Pikuz, A. Faenov, K. Ogura, M. Kanasaki, K. Matsukawa, T. Kusumoto, A. Tao, T. Fukami, T. Esirkepov, J. Koga, H. Kiriyama, H. Okada, T. Shimomura, M. Tanoue, Y. Nakai, Y. Fukuda, S. Sakai, J. Tamura, K. Nishio, H. Sako, M. Kando, T. Yamauchi, Y. Watanabe, S. V. Bulanov, K. Kondo
    Feb. 2014, Review of Scientific Instruments, 85(2) (2), 02B904, English
    [Refereed]
    International conference proceedings

  • H. Sakaki, M. Nishiuchi, S. Maeda, A. Sagisaka, A. S. Pirozhkov, T. Pikuz, A. Faenov, K. Ogura, T. Fukami, K. Matsukawa, M. Kanasaki, Y. Fukuda, A. Yogo, T. Esirkepov, H. Kiriyama, T. Shimomura, Y. Nakai, M. Tanoue, K. Torimoto, M. Okamoto, T. Sato, K. Niita, J. Tamura, K. Nishio, H. Sako, T. Yamauchi, Y. Watanabe, S. Bulanov, K. Kondo
    Feb. 2014, REVIEW OF SCIENTIFIC INSTRUMENTS, 85(2) (2), 02A705, English
    [Refereed]
    Scientific journal

  • Discrimination Method of Etch Pits Created by Laser-Accelerated Protons and Recoiled Protons by Photo-Neutrons Using CR-39
    Masato Kanasaki, Yuji Fukuda, Kiminori Kondo, Keiji ODA, YAMAUCHI TOMOYA
    The Laser Society of Japan, Feb. 2014, The Review of Laser Engineering, 42(2) (2), 168 - 173, English
    [Refereed][Invited]
    Scientific journal

  • Ion acceleration by the 10(21) Wcm(-2) intensity high contrast laser pulses interacting with the thin foil target
    M. Nishiuchi, H. Sakaki, K. Nishio, H. Sako, T. A. Pikuz, A. Ya. Faenov, T. Zh. Esirkepov, A. S. Pirozhkov, K. Matsukawa, A. Sagisaka, K. Ogura, M. Kanasaki, H. Kiriyama, Y. Fukuda, M. Kando, T. Yamauchi, Y. Watanabe, S. V. Bulanov, K. Kondo
    2014, 2014 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO), English
    International conference proceedings

  • A study on the heavy ion track in polyimide
    Kenya Matsukawa, YAMAUCHI TOMOYA, Yutaka Mori, Masato Kanasaki, Yuri Matai, Tamon Kusumoto, Akira Tao, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Hisashi Kitamura
    Ionizing Radiation Division, JAPS, Jan. 2014, Ionizing Radiation, 39(3) (3), 135 - 144, Japanese
    [Refereed][Invited]
    Scientific journal

  • Structural analysis of heavy ion tracks in PADC films
    Yutaka Mori, Tamon Kusumoto, Yuri Matai, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, Teruaki Konishi, Nakahiro Yasuda, Sachiko Toji, Yoshihide Honda, YAMAUCHI TOMOYA
    Kobe University, Jul. 2013, Review of Graduate School of Maritime Sciences, Kobe University, 10, 21 - 32, Japanese
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Tomoya Yamauchi, Kenya Matsukawa, Yutaka Mori, Masato Kanasaki, Atsuto Hattori, Yuri Matai, Tamon Kusumoto, Akira Tao, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Hisashi Kitamura, Nakahiro Yasuda, Remi Barillon
    The Japan Society of Applied Physics, Apr. 2013, Applied Physics Express, 6(4) (4), 1 - 4, English
    [Refereed]
    Scientific journal

  • Yutaka Mori, Tomoya Yamauchi, Masato Kanasaki, Atsuto Hattori, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda, Sachiko Tojo, Yoshihide Honda, Remi Barillon
    Mar. 2013, RADIATION MEASUREMENTS, 50, 97 - 102, English
    [Refereed]
    Scientific journal

  • Y. Fukuda, H. Sakaki, M. Kanasaki, A. Yogo, S. Jinno, M. Tampo, A. Ya. Faenov, T. A. Pikuz, Y. Hayashi, M. Kando, A. S. Pirozhkov, T. Shimomura, H. Kiriyama, S. Kurashima, T. Kamiya, K. Oda, T. Yamauchi, K. Kondo, S. V. Bulanov
    Mar. 2013, RADIATION MEASUREMENTS, 50, 92 - 96, English
    [Refereed]
    Scientific journal

  • R. Barillon, Y. Mori, M. Kanasaki, T. Yamauchi, N. Yasuda
    Mar. 2013, Radiation Measurements, 50, 38 - 42, English
    [Refereed]
    Scientific journal

  • Tomoya Yamauchi, Shunsuke Kaifu, Yutaka Mori, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda, Remi Barillon
    Mar. 2013, RADIATION MEASUREMENTS, 50, 16 - 21, English
    [Refereed]
    Scientific journal

  • Masato Kanasaki, Atsuto Hattori, Hironao Sakaki, Yuji Fukuda, Akifumi Yogo, Satoshi Jinno, Mamiko Nishiuchi, Koichi Ogura, Kiminori Kondo, Keiji Oda, Tomoya Yamauchi
    Mar. 2013, RADIATION MEASUREMENTS, 50, 46 - 49, English
    [Refereed]
    Scientific journal

  • Masato Kanasaki, Yuji Fukuda, Hironao Sakaki, Akifumi Yogo, Satoshi Jinno, Mamiko Nishiuchi, Atsuto Hattori, Kenya Matsukawa, Kiminori Kondo, Keiji Oda, Tomoya Yamauchi
    2013, 2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS PACIFIC RIM (CLEO-PR), English
    [Refereed]
    International conference proceedings

  • Y. Fukuda, H. Sakaki, M. Kanasaki, A. Yogo, S. Jinno, M. Tampo, A. Ya. Faenov, T. A. Pikuz, Y. Hayashi, M. Kando, A. S. Pirozhkov, T. Shimomura, H. Kiriyama, S. Kurashima, T. Kamiya, K. Oda, T. Yamauchi, K. Kondo, S. V. Bulanov
    2013, LASER ACCELERATION OF ELECTRONS, PROTONS, AND IONS II; AND MEDICAL APPLICATIONS OF LASER-GENERATED BEAMS OF PARTICLES II; AND HARNESSING RELATIVISTIC PLASMA WAVES III, 8779, 87790F, English
    [Refereed]
    International conference proceedings

  • Nabil M. Hassan, Yuri Matai, Tamon Kusumoto, Yutaka Mori, Masato Kanasaki, Keiji Oda, Hisashi Kitamura, Teruaki Konishi, Satoshi Kodaira, Nakahiro Yasuda, Tomoya Yamauchi
    2013, Radiation Measurements, 59, 23 - 29, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • S. Kodaira, D. Nanjo, H. Kawashima, N. Yasuda, T. Konishi, M. Kurano, H. Kitamura, Y. Uchihori, S. Naka, S. Ota, Y. Ideguchi, N. Hasebe, Y. Mori, T. Yamauchi
    Sep. 2012, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 286, 229 - 232, English
    [Refereed]
    Scientific journal

  • Yutaka Mori, Tomoya Yamauchi, Masato Kanasaki, Atsuto Hattori, Yuri Matai, Kenya Matsukawa, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, Teruaki Konishi, Nakahiro Yasuda, Sachiko Tojo, Yoshihide Honda, Remi Barillon
    Aug. 2012, APPLIED PHYSICS EXPRESS, 5(8) (8), English
    [Refereed]
    Scientific journal

  • Hiroaki Fukao, Masato Kanasaki, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    Kobe University, Jul. 2012, Review of Graduate School of Maritime Sciences, 9, 69 - 78, Japanese
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Masashi Kajihara, Keiji Oda, Tomoya Yamauchi, Hiroyuki Ohguchi, Takayoshi Yamamoto
    神戸大学大学院海事科学研究科, Jul. 2012, Review of Graduate School of Matitime Sciences, Kobe University, Vol.9, pp.20-25, 20 - 25, Japanese
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Tomoya Yamauchi, Yutaka Mori, Akira Morimoto, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda, Sachiko Tojo, Yoshihide Honda, Remi Barillon
    May 2012, JAPANESE JOURNAL OF APPLIED PHYSICS, 51(5) (5), English
    [Refereed]
    Scientific journal

  • Masato Kanasaki, Yuji Fukuda, Hironao Sakaki, Toshihiko Hori, Motonobu Tampo, Kiminori Kondo, Satoshi Kurashima, Tomihiro Kamiya, Keiji Oda, Tomoya Yamauchi
    May 2012, JAPANESE JOURNAL OF APPLIED PHYSICS, 51(5) (5), English
    [Refereed]
    Scientific journal

  • M. Nishiuchi, A. S. Pirozhkov, H. Sakaki, K. Ogura, T. Zh Esirkepov, T. Tanimoto, M. Kanasaki, A. Yogo, T. Hori, A. Sagisaka, Y. Fukuda, Y. Matsumoto, S. Entani, S. Sakai, C. M. Brenner, D. Neely, T. Yamauchi, S. V. Bulanov, K. Kondo
    Mar. 2012, PHYSICS OF PLASMAS, 19(3) (3), English
    [Refereed]
    Scientific journal

  • Masato Kanasaki, Tomoya Yamauchi, Yuji Fukuda, Hironao Sakaki, Toshihiko Hori, Motonobu Tampo, Satoshi Kurashima, Tomihiro Kamiya, Keiji Oda, Kiminori Kondo
    2012, LASER-DRIVEN RELATIVISTIC PLASMAS APPLIED TO SCIENCE, ENERGY, INDUSTRY, AND MEDICINE, 1465, 142 - 147, English
    [Refereed]
    International conference proceedings

  • Keiji Oda, Daisuke Hayano, Masashi Kajihara, Hiroyuki Ohguchi, Tomoya Yamauchi, Takayoshi Yamamoto
    Dec. 2011, RADIATION MEASUREMENTS, 46(12) (12), 1786 - 1789, English
    [Refereed]
    Scientific journal

  • Applicability of the polyimide films as a new SSNTD material
    Shunsuke Kaifu, Yutaka Mori, Masato Kanasaki, Tomoya Yamauchi, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda
    応用物理学会放射線分科会, Oct. 2011, Ionizing Radiation, Vol. 37, No. 3, pp. 157-163(3) (3), 157 - 163, Japanese
    [Refereed]
    Scientific journal

  • Damage structure of heavy ion track in polyethylene terephthalate film
    Akira Morimoto, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda
    応用物理学会放射線分科会, Oct. 2011, Ionizing Radiation, Vol. 37, No. 3, pp. 133-141(3) (3), 133 - 141, Japanese
    [Refereed]
    Scientific journal

  • Application of PADC nuclear track detectors in laser-driven particle acceleration experiments
    Yuji Fukuda, Motonobu Tanpo, Hironao Sakaki, Kiminori Kondo, Masato Kanasaki, Tomoya Yamauchi
    Oct. 2011, Ionizing Radiation, Vol. 37, No. 3, pp. 169-172(3) (3), Japanese
    [Refereed]
    Scientific journal

  • Response of PADC track detectors assessed by the multi-step etching
    Atsuto Hattori, Yutaka Mori, Tomoya Yamauchi, Keiji Oda
    応用物理学会放射線分科会, Oct. 2011, Ionizing Radiation, Vol. 37, No. 3, pp. 143-148(3) (3), 143 - 148, Japanese
    [Refereed]
    Scientific journal

  • A study on some surface properties of ion-irradiated PADC track detectors
    Yutaka Mori, Yusuke Maeda, Masato Kanasaki, Tomoya Yamauchi, Keiji Oda, Koji Kuraoka, Nakahiro Yasuda, Teruaki Konishi, Satoshi Kodaira, Yoshihid Honda, Sachiko Toji
    応用物理学会放射線分科会, Oct. 2011, Ionizing Radiation, Vol. 37, No. 3, pp. 149-155(3) (3), 149 - 155, Japanese
    [Refereed]
    Scientific journal

  • Yutaka Mori, Tomoya Yamauchi, Masato Kanasaki, Yusuke Maeda, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda, Remi Barillon
    Oct. 2011, RADIATION MEASUREMENTS, 46(10) (10), 1147 - 1153, English
    [Refereed]
    Scientific journal

  • A new simple diagnosis method for intense ion beam utilizing back scattered particles with PADC track detectors
    Masato Kanasaki, Tomoya Yamauchi, Yuji Fukuda, Hironao Sakaki, Toshihiko Hori, Motonobu Tampo, Kiminori Kondo, Satoshi Kurashima, Tomihiro Kamiya
    Oct. 2011, Ionizing Radiation, Vol. 37, No. 3, pp. 127-131(3) (3), Japanese
    [Refereed]
    Scientific journal

  • Hirotaka Rito, Tomoya Yamauchi, Keiji Oda
    Jul. 2011, RADIATION PROTECTION DOSIMETRY, 146(1-3) (1-3), 69 - 71, English
    [Refereed]
    Scientific journal

  • Akira Morimoto, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    Jul. 2011, Review of Graduate School of Maritime Sciences, 8, pp. 31-40, Japanese
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Yusuke Maeda, Yutaka Mori, Masato Kanasaki, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda, Sachiko Tojo, Yoshihide Honda, Koji Kuraoka
    神戸大学大学院海事科学研究科, Jul. 2011, Review of Graduate School of Maritime Sciences, 8, pp. 21-29, 21 - 29, Japanese
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Tomoya Yamauchi, Yutaka Mori, Keiji Oda, Satoshi Kodaira, Nakahiro Yasuda, Remi Barillon
    Dec. 2010, KEK Proceedings/ RADIATION DETECTORS AND THEIR USES, 2010-10, 1-11
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Quantum yields for loss of carbonate ester bonds in polymeric nuclear track detectors under 222 nm UV radiation
    Atsushi Sakamoto, Yutaka Mori, Masato Kanasaki, Tomoya Yamauchi, Keiji Oda
    Kobe University, Jul. 2010, Review of Graduate School of Maritime Sciences, 7, pp. 87-98, 87 - 98, Japanese
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Monte carlo simulation of energy deposition in imaging plate
    Takahisa Miyata, Hirotaka Rito, Masashi Kajihara, Tomoya Yamauchi, Keiji Oda
    2010, Proceedings of the 17th EGS Users' Meeting in Japan, 89 - 93, English
    International conference proceedings

  • Keiji Oda, Daisuku Hayano, Tomoya Yamauchi, Hiroyuki Ohguchi, Takayoshi Yamamoto
    Oct. 2009, RADIATION MEASUREMENTS, 44(9-10) (9-10), 977 - 980, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Tomoya Yamauchi, Yutaka Mori, Hiraku Chikada, Atsushi Sakamoto, Junpei Kii, Masato Kanasaki, Keiji Oda, Masami Fujii
    Oct. 2009, RADIATION MEASUREMENTS, 44(9-10) (9-10), 1105 - 1108, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Y. Fukuda, A. Ya. Faenov, M. Tampo, T. A. Pikuz, T. Nakamura, M. Kando, Y. Hayashi, A. Yogo, H. Sakaki, T. Kameshima, A. S. Pirozhkov, K. Ogura, M. Mori, T. Zh. Esirkepov, J. Koga, A. S. Boldarev, V. A. Gasilov, A. I. Magunov, T. Yamauchi, R. Kodama, P. R. Bolton, Y. Kato, T. Tajima, H. Daido, S. V. Bulanov
    Oct. 2009, PHYSICAL REVIEW LETTERS, 103(16) (16), English
    [Refereed]
    Scientific journal

  • 森 豊, 坂本 淳志, 山内 知也, 小田 啓二, 安田 仲宏
    神戸大学大学院海事科学研究科, Jul. 2009, 神戸大学大学院海事科学研究科紀要 = Review of the Faculty of Maritime Sciences, Kobe University, 6, 65 - 72, Japanese

  • Design of active-type personal dosimeter for high energy neutron
    Kensuke Iwano, Hirotaka Ritou, Tomoki Takemto, Tomoya Yamauchi, Keiji Oda
    Jul. 2009, Ionizing Radiation, 34・3・218-226, Japanese
    [Refereed]
    Scientific journal

  • Yutaka Mori, ATsushi Sakamoto, Tomoya Yamauchi, Keiji Oda, Nakahiro Yasuda
    Jul. 2009, Review of Graduate School of Maritime Sciences, 第6号、pp. 65-72, Japanese
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • S. Kodaira, N. Yasuda, H. Tawara, K. Ogura, T. Doke, N. Hasebe, T. Yamauchi
    May 2009, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 267(10) (10), 1817 - 1822, English
    [Refereed]
    Scientific journal

  • Yutaka Mori, Toshiji Ikeda, Tomoya Yamauchi, Atsushi Sakamoto, Hiraku Chikada, Yoshihide Honda, Keiji Oda
    Feb. 2009, RADIATION MEASUREMENTS, 44(2) (2), 211 - 213, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • H. Ohguchi, K. Oda, T. Yamauchi, T. Nakamura, D. Maki
    Jul. 2008, RADIATION MEASUREMENTS, 43, S500 - S503, English
    [Refereed]
    Scientific journal

  • T. Yamauchi, S. Watanabe, A. Seto, K. Oda, N. Yasuda, R. Barillon
    Jul. 2008, RADIATION MEASUREMENTS, 43, S106 - S110, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • T. Yamauchi, S. Watanabe, K. Oda, N. Yasuda, R. Barillon
    Jul. 2008, RADIATION MEASUREMENTS, 43, S116 - S119, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Tomoya Yamauchi, Yutaka Mori, Keiji Oda, Nakahiro Yasuda, Hisashi Kitamura, Remi Barillon
    May 2008, JAPANESE JOURNAL OF APPLIED PHYSICS, 47(5) (5), 3606 - 3609, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Keiji Oda, Kensuke Iwano, Tomoya Yamauchi, Tomoya Nunomiya, Shigeru Abe, Takashi Nakamura
    Feb. 2008, RADIATION MEASUREMENTS, 43(2-6) (2-6), 1072 - 1076, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Hiroyuki Ohguchi, Wakako Shinozaki, Keiji Oda, Takashi Nakamura, Tomoya Yamauchi
    Feb. 2008, RADIATION MEASUREMENTS, 43(2-6) (2-6), 437 - 441, English
    [Refereed]
    Scientific journal

  • 渡邉 宗一郎, 山内 知也, 小田 啓二, 安田 仲宏
    神戸大学海事科学部, Jul. 2007, 神戸大学大学院海事科学研究科紀要 = Review of the Faculty of Maritime Sciences, Kobe University, 4, 61 - 70, Japanese

  • On the structure of heavy ion tracks in polycarbonate
    Souichirou Watanaba, Tomoya Yamauchi, Keiji Oda, Nakahiro Yasuda
    Kobe University, Jul. 2007, Review of the Faculty of Maritime Sciences, 4, 61-70, 61 - 70, Japanese
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • David Broggio, Remi Barillon, Jean-Marc Jung, Nakahiro Yasuda, Tomoya Yamauchi, Hisashi Kitamura, Pierre Bischoff
    Jan. 2007, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 254(1) (1), 3 - 9, English
    [Refereed]
    Scientific journal

  • 小田 啓二, 塚原 一孝, 多田 英哲, 山内 知也
    Supplementary experiments and theoretical consideration have been performed about a new method for particle identification with an imaging plate, which was proposed in the previous paper. The imaging plate was exposed to 137Cs γ-rays, 2 MeV-protons accelerated by a tandem Van de Graaff, X-rays emitted from a tube operated under the condition of 20-70 kV, as well as α-and β-rays. The frequency distribution in PSL intensity in a pixel of 100 μm x 100 μm was measured and the standard deviation was obtained by fitting to a Gaussian. It was confirmed that the relative standard deviation decreased with the average PSL intensity for every radiation species and that the curves were roughly divided into four groups of α-rays, protons, β-rays and photons.
    In the second step, these data were analyzed by plotting the square of the relative standard deviation against the average PSL intensity in full-log scale, where the relation should be expressed by a straight line with an slope of -1 provided that the deviation could be dominated only by statistical fluctuation. The data for α-and β-rays deviated from a straight line and approached to each saturated value as the average. PSL intensity increased. This saturation was considered to be caused by inhomogeneity in the source intensity. It was also pointed out that the value of interception on full-log plot would have important information about PSL reading efficiency, one of characteristic parameters of imaging plate.
    JAPANESE SOCIETY OF RADIATION SAFETY MANAGEMENT, Nov. 2006, Japanese Journal of Radiation Safety Management, 第5巻第2号, pp.101-106(2) (2), 101 - 106, Japanese
    [Refereed]
    Scientific journal

  • 小田 啓二, 塚原 一孝, 多田 英哲, 山内 知也
    A new attempt has been carried out for providing an additional function of particle identification for the imaging plate of two-dimensional position sensitive device. This proposed method is based on the statistical feature that PSL intensity recorded in a small pixel may suffer from fluctuation even though the PSL intensity seems to be almost uniform in a larger area. Dividing a scan area of about 3 mm square into more than 1, 000 pixels of 0.1 mm square, frequency distribution in PSL intensity became sharper with increasing β-ray irradiation time. The broadness was quantified by the standard deviation obtained by fitting measured distribution to Gaussian. It was experimentally confirmed that the standard deviation for α-rays was much higher than that for β-rays on the condition of the same average PSL intensity, which means that α-and β-rays can be successfully discriminated by the proposed method. From a viewpoint of practical application to monitoring of radioisotope contamination in controlled area, two problems were also investigated concerning about the mixed irradiation of α-and β-rays and the minimum scanarea for deriving distribution.
    JAPANESE SOCIETY OF RADIATION SAFETY MANAGEMENT, Jul. 2006, Japanese Journal of Radiation Safety Management, 第5巻第1号, pp.32-38(1) (1), 32 - 38, Japanese
    [Refereed]
    Scientific journal

  • Heavy ion tracks in polycarbonate(bisphenol A)
    Souichirou Watanabe, Tomoya Yamauchi, Keiji Oda, Nakahiro Yasuda
    Jun. 2006, Review of the Faculty of Maritime Sciences, Vol. 3, Japanese
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • T Yamauchi, R Barillon, E Balanzat, T Asuka, K Izumi, T Masutani, K Oda
    Nov. 2005, RADIATION MEASUREMENTS, 40(2-6) (2-6), 224 - 228, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • K Oda, Y Imasaka, T Yamauchi, Y Nakane, A Endo, H Tawara, Y Yamaguchi
    Nov. 2005, RADIATION MEASUREMENTS, 40(2-6) (2-6), 570 - 574, English
    [Refereed]
    Scientific journal

  • D Broggio, JM Jung, R Barillon, Yamauchi, T
    Nov. 2005, RADIATION MEASUREMENTS, 40(2-6) (2-6), 736 - 740, English
    [Refereed]
    Scientific journal

  • N Yasuda, T Konishi, K Matsumoto, T Yamauchi, T Asuka, Y Furusawa, Y Sato, K Oda, H Tawara, K Hieda
    Nov. 2005, RADIATION MEASUREMENTS, 40(2-6) (2-6), 384 - 388, English
    [Refereed]
    Scientific journal

  • T Yamauchi, N Yasuda, T Asuka, K Izumi, T Masutani, K Oda, R Barillon
    Jul. 2005, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 236, 318 - 322, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • D Broggio, JM Jung, R Barillon, T Yamauchi
    Jun. 2005, RADIATION MEASUREMENTS, 39(3) (3), 283 - 287, English
    [Refereed]
    Scientific journal

  • Track core size estimation for heavy ions in CR-39 detector
    阿須賀 拓, Tomoya Yamauchi, 小田 啓二, 安田 仲宏
    Jun. 2005, Review of the Faculty of Maritime Sciences, 2、179-184, Japanese
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • N Kubota, H Mimura, T Yamauchi, A Kitamura
    Apr. 2004, MARINE POLLUTION BULLETIN, 48(7-8) (7-8), 800 - 805, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • Keiji Oda, Yuichi Imasaka, Tomoya Yamauchi, Yoshihiro Nakane, Akira Endo, Yasuhiro Yamaguchi
    2004, Journal of Nuclear Science and Technology, 41, 514 - 517, English
    [Refereed]
    Scientific journal

  • T Yamauchi, H Nakai, Y Somaki, K Oda
    Sep. 2003, RADIATION MEASUREMENTS, 36(1-6) (1-6), 99 - 103, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • T Yamauchi
    Sep. 2003, RADIATION MEASUREMENTS, 36(1-6) (1-6), 73 - 81, English
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • K Oda, Y Imasaka, K Tsukahara, T Yamauchi, Y Nakane, Y Yamaguchi
    Sep. 2003, RADIATION MEASUREMENTS, 36(1-6) (1-6), 119 - 124, English
    [Refereed]
    Scientific journal

  • T Yamauchi, Y Somaki, H Nakai, K Oda, T Ikeda, H Honda, S Tagawa
    Aug. 2003, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 208, 489 - 494, English
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • T Yamauchi, D Mineyama, H Nakai, K Oda, N Yasuda
    Aug. 2003, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 208, 149 - 154, English
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • R Barillon, T Yamauchi
    Aug. 2003, NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 208, 336 - 339, English
    Scientific journal

  • T Yamauchi, A EL-Rahmany, D Mineyama, H Nakai, K Oda
    Apr. 2003, RADIATION MEASUREMENTS, 37(2) (2), 119 - 125, English
    [Refereed]
    Scientific journal

  • 海洋微生物に結合した有機スズ化合物TBTCｌの加速器分析
    久保田 直義, 三村 治夫, 山内 知也, 北村 晃
    Kobe University, 2003, 神戸商船大学紀要 第二類, 第51号, pp.97-103, 97 - 103, Japanese
    Scientific journal

  • The etching property of the surface of CR-39 and the track core radius of fission fragment
    D Mineyama, H Nakai, T Yamauchi, K Oda, A. EL-Rahmany
    Kobe University, Jul. 2002, Review of Kobe University of Mercantile Marine Part II, 50, p. 133-139, 133 - 139, Japanese
    Scientific journal

  • Oda Keiji, Miyawaki Nobumasa, Yamauchi Tomoya, Baba Suiki
    In this report are discussed the characteristics of a radiation field generated by a small gamma-ray source and the depth-dose curve in a material placed there.The experiments with TLDs and a 137Cs source resulted in a depth-dependence of about 30% decrease by aluminum wall of 100mg/cm2, to the contrary of a well-known pattern, i.e.saturation after a rapid build-up for parallel photon beam.In order to investigate the discrepancy, a Monte Carlo simulation was employed to calculate the energy distribution of the secondary electrons in an approximate geometry of a spherical source of glass sealed in a stainless-steel capsule.It was confirmed that the surface dose may be affected considerably by secondary electrons generated in the capsule and/or the air between the source and the detector. The angular distribution of secondary electrons and scattered photons have also been calculated, with which the function of a collimator was discussed.
    Japanese Society of Radiation Safety Management, 2002, Radiation Safety Management, 1(1) (1), 7 - 11, English

  • Characteristic response of plastic track detectors to 40-80 MeV neutrons
    K Oda, Y Saito, N Miyawaki, T Yamauchi, A El Rahmany, Y Nakane, Y Yamaguchi
    2002, RADIATION PROTECTION DOSIMETRY, 101(1-4) (1-4), 569 - 572, English
    [Refereed]
    Scientific journal

  • Measurements of Intense Ion Beam Induced by Ultra-Intense Laser-Plasma with Solid State Track Detectors
    TAMPO M., KODAMA R., YAMANAKA T., YAMAUCHI T., ODA K.
    応用物理学会,放射線分科会, Oct. 2001, Ionizing radiation., 27(4) (4), 61 - 66, Japanese
    [Refereed]
    Scientific journal

  • Response of CR-39 track detectors to light ions
    Hirotaka ICHIJO, Tomoya YAMAUCHI, Keiji ODA, Birgit Doerschel, Dietrich Hermsdorf, Karin Kadner, Francois Vaginay, Michel Fromm, Alain Chambaudet
    応用物理学会,放射線分科会, Oct. 2001, Ionzing Radiation, 27-4, p. 7-18(4) (4), 7 - 18, Japanese
    [Refereed]
    Scientific journal

  • Production of high-energy gamma-rays by proton beam and their applications
    Nobumasa Miyawaki, Tomoya Yamauchi, Hiroshi Miyamato, Keiji Oda
    Kobe University, Jul. 2001, Review of Kobe University of Mercantile Marine Part II, 49, 187-194, 187 - 194, Japanese
    Scientific journal

  • Response of CR-39 track detectors to lithium ions
    Hirotaka ICHIJO, Tomoya YAMAUCHI, Keiji ODA, Birgit Doerschel, Dietrich Hermsdorf, Karin Kadner, Francois Vaginay, Michel Fromm, Alain Chambaudet
    Kobe University, Jul. 2001, Review of Kobe University of Mercantile Marine Part II, 49, p.203-209, 203 - 209, Japanese
    Scientific journal

  • RESPONSE OF PLASTIC NUCLEAR TRACK DETECTORS TO HIGH-ENERGY NEUTRONS
    Y Saito, A EL-Rhamany, N Miyawaki, T Yamauchi, Y Nakane, Y Yamaguchi, K Oda
    Kobe University, Jul. 2001, Review of Kobe University of Mercantile Marine Part II, 49, p. 195-201, 195 - 201, Japanese
    Scientific journal

  • T Yamauchi, H Ichijo, K Oda, B Doerschel, D Hermsdorf, K Kadner, F Vaginay, M Fromm, A Chambaudet
    Jun. 2001, RADIATION MEASUREMENTS, 34(1-6) (1-6), 37 - 43, English
    [Refereed]
    Scientific journal
    Link to Kobe Univ. Repository (Kernel)

  • T Yamauchi, H Ichijo, K Oda
    Apr. 2001, RADIATION MEASUREMENTS, 33(2) (2), 189 - 192, English
    [Refereed]
    Scientific journal

  • T. Yamauchi, S. Takada, H. Ichijo, K. Oda
    2001, Radiation Measurements, 34(1-6) (1-6), 69 - 73, English
    [Refereed]
    International conference proceedings

  • K. Oda, H. Ichijo, N. Miyawaki, T. Yamauchi, Y. Nakane
    2001, Radiation Measurements, 34(1-6) (1-6), 171 - 175, English
    [Refereed]
    Scientific journal

  • T. Yamauchi, H. Ichijo, K. Oda
    2001, Radiation Measurements, 34(1-6) (1-6), 85 - 89, English
    [Refereed]
    International conference proceedings

  • Raman and FT-IR Study on Proton and Gamma Irradiated CR-39 Detector and the Effect of Air-leak on the Latent Track Fromation
    Tomoya Yamauchi
    Dec. 2000, 第８回神戸商船大学研究発表会要旨集, p. 1-4
    Scientific journal

  • Gamma-ray and Ion Irradiation Effects on the Optical Property of CR-39 Detector and Their Latent Track Size
    Tomoya Yamauchi, Hirotaka Ichijo, Keiji Oda
    Lead, Dec. 2000, Proceedings of the First International Symposium on Supercritical Water-cooled Reactor, Design nd Technology, (SCR-2000), 407, 274 - 287, No password
    Scientific journal
    添付ファイルのURLLink to Kobe Univ. Repository (Kernel)

  • ODA Keiji, MIYAWAKI Nobumasa, YAMAUCHI Tomoya, BABA Sueki
    In this report are discussed the characteristics of a radiation field generated by a 137Cs γ-ray source and the depth-dose curve in a material placed there. A simpler formulation was achieved to describe fundamental dosimeterc quantities, the kerma and the absorbed dose. The well-known pattern of the depth-dose relation, i.e. rapid increase followed by gradual decrease due to attenuation of primary photons, could be confirmed by a numerical calculation under the condition of an exposure to parallel photon beam in vacuum.
    The experiments with CaSO4 TL elements of 15 mg/cm2 thick attached to a plastic substrate of 11 mg/cm2 and aluminum foils, contrary to the theoretical prediction, resulted in a different depth-dependence of about 30% decrease by aluminum of 100 mg/cm2, which corresponds to an attenuation of 26 keV photons. Another experimental trials and a rough estimation of the absorbed dose should lead an inference that the absorbed dose near the surface may be considerably affected by secondary electrons generated in the capsule and/or the air between the source and the detector.
    In order to discuss more quantitatively, a Monte Carlo code EGS4 was employed to calculate the energy and the fluence of the secondary electrons with an assumption of a spherical γ-source made of glass in a stainless steel capsule. It was found out that the relative fluence of the secondary electrons was only a few thousandth of the primary photons, but that their contribution to the absorbed dose near the surface amounted to more than 70% owing to a much larger conversion coefficient. A careful consideration to the secondary electrons must be required in the case of γ-ray irradiation to materials or calibration of dosimeters with a γ-ray source.
    Japan Radioisotope Association, Oct. 2000, RADIOISOTOPES, 49(10) (10), 471 - 478, Japanese

  • UV-VISIBLE SPECTRAL STUDY ON THE LATENT TRACK OF LIGHT IONS IN CR-39 PLASTICS DETECTOR
    Tomoya YAMAUCHI, Tomoki TANIGUCHI, Keiji ODA
    Lead, Aug. 1999, KEK Proceedings/ RADIATION DETECTORS AND THEIR USES, 99(8) (8), 45 - 55, English, No password
    [Refereed]
    Scientific journal
    添付ファイルのURLLink to Kobe Univ. Repository (Kernel)

  • T. Yamauchi, T. Taniguchi, K. Oda
    Elsevier Science Ltd, 1999, Radiation Measurements, 31(1) (1), 261 - 264, English
    [Refereed]
    Scientific journal

  • T. Yamauchi, T. Taniguchi, K. Oda, T. Ikeda, Y. Honda, S. Tagawa
    Elsevier Science Ltd, 1999, Radiation Measurements, 31(1) (1), 121 - 126, English
    [Refereed]
    Scientific journal

  • F. Sato, Y. Tanimura, T. Tanaka, T. Iida, T. Yamauchi, K. Oda
    Elsevier Science Ltd, 1999, Radiation Measurements, 31(1) (1), 253 - 256, English
    [Refereed]
    Scientific journal

  • Design of Measurements System for Boron Concentration in PWR Reactor Coolant System Water
    Takeshi KOJIMA, Takashi YAMAGUCHI, Shinji HIO, Shoji OHASHI, 山内 知也, Keiji ODA
    Kobe University, Jul. 1998, Review of Kobe University of Mercantile Marine Part II, 46, p. 11- 18, 11 - 18, Japanese
    Scientific journal

  • On the Sodium Leak and Fire Accident of Fast Breeder Reactor MONJU
    Keiji Kobayashi, Hiroaki Koide, Tetsuji Imanaka, Toru Ebisawa, Shinji Kawano, Sanshirou Kume, Kenji Showaki, YAMAUCHI TOMOYA
    A Sodium leak and fire accident occurred in the fast breeder reactor MONJU on the 8th of December in 1995. Investigations were carried out by Power Reactor and Nuclear Fuel Development Corporation, and officially, by the Science and Technology Agency and the Nuclear Safty Commission. Referring their reports, we pointed out the problems raised in the accident and discussed them
    KUR, Jan. 1998, 京都大学原子炉実験所第32回学術講演会報文集, 第32回(16) (16), 87 - 91, Japanese
    Research institution

  • Changes in characteristics of CR-39 track detector by gamma and electron irradiation
    K Yoshida, T Yamauchi, K Oda, T Ikeda, Y Honda, S Tagawa
    Oct. 1997, Ionzing Radiation, 23-3, p. 113-119, Japanese
    [Refereed]
    Scientific journal

  • Calibration study on the response of CR-39 track detector to low energy ions
    Sunao TANABE, Tomoki TANIGUCHI, Tomoya YAMAUCHI, Keiji ODA, Hiroshi MIYAKE
    Kobe University, Jul. 1997, Review of Kobe University of Mercantile Marine Part II, 45, p.141-146, 141 - 146, Japanese
    Scientific journal

  • K Oda, K Yoshida, T Yamauchi, Y Honda, T Ikeda, S Tagawa
    1997, RADIATION MEASUREMENTS, 28(1-6) (1-6), 85 - 88, English
    [Refereed]
    Scientific journal

  • T Yamauchi, K Oda, S Tanabe, H Matsumoto, H Miyake
    1997, RADIATION MEASUREMENTS, 28(1-6) (1-6), 191 - 196, English
    [Refereed]
    Scientific journal

  • Application of Solid State Dosimeters to Absorbed Dose Measurement in Shallow Region
    Makoto YOSHIDA, Katsuya YOSHIDA, Keiji ODA, Tomoya YAMAUCHI
    Kobe University, Jul. 1996, Review of Kobe University of Mercantile Marine Part II, 44, p. 69-74, 69 - 74, Japanese
    Scientific journal

  • Triton, Deuteron and Proton Response of the CR-39 Track Detector
    Tomoya YAMAUCHI, Hiroyoshi MATSUMOTO, Keiji ODA
    Jul. 1996, KEK Proceedings/ RADIATION DETECTORS AND THEIR USES, 96-4, p.41-49, Japanese, No password
    [Refereed]
    Scientific journal
    添付ファイルのURLLink to Kobe Univ. Repository (Kernel)

  • Design of Photon Detector System Using Monte Carlo Simulation
    Akira NUNOKO, Keiji ODA, Tomoya YAMAUCHI, Hiroshi MIYAKE
    Kobe University, Oct. 1995, Review of Kobe University of Mercantile Marine Part II, 43, p. 19-24, 19 - 24, Japanese
    Scientific journal

  • Discrete measurement of hydrogen isotopes with CR-39 track detector
    Hiroyoshi MATSUMOTO, Tomoya YAMAUCHI, Takaaki YOSHIMOTO, Keiji ODA, Itsumasa URABE, Hiroshi MIYAKE, Tadashi TSUJIMOTO
    Kobe University, Oct. 1995, Review of Kobe University of Mercantile Marine Part II, 43, p. 47-51, 47 - 51, Japanese
    Scientific journal

  • Study on the Calibration of CR-39 Track Detector for Low Energy Proton and Alpha-particles
    Tomoya YAMAUCHI, Keiji ODA, Hiroyoshi MATSUMOTO, Hiroshi MIYAKE
    Jun. 1995, KEK Proceedings/ RADIATION DETECTORS AND THEIR USES, 95-1, p.97-106, No password
    [Refereed]
    Scientific journal
    添付ファイルのURLLink to Kobe Univ. Repository (Kernel)

  • Missing Track Effect on Etch-Pit Growth Curve
    Tomoya Yamauchi, Hiroyoshi Matsumoto, Keiji Oda, Hiroshi Miyake
    May 1995, Ionzing Radiation, 21-2, p. 10-19(2) (2), 10 - 19, Japanese
    [Refereed]
    Scientific journal

  • T Yamauchi, H Matsumoto, K Oda, H Miyake
    1995, Radiation Measurements, 24(1) (1), 101 - 104, English
    [Refereed]
    Scientific journal

  • Thermal Release Behavior of Helium Implanted into Titanium
    Tomoya Yamauchi, Shinsuke Yamanaka, Masanobu Miyaka
    Oct. 1993, Technology Report of the Osaka University, 43, 2147, p. 197-204
    Scientific journal

  • Thermal Release Behavior of Helium Implanted into Nickel, Copper and Silver
    Tomoya Yamauchi, Shinsuke Yamanaka, Masanobu Miyaka
    Oct. 1993, Technology Report of the Osaka University, 43, 2146, p. 187-195
    Scientific journal

  • H. Miyake, J. Sasaki, T. Iwao, K. Oda, T. Yamauchi, T. Inoue, N. Shiota, H. Tsubo
    Apr. 1993, Nuclear Inst. and Methods in Physics Research, B, 75(1-4) (1-4), 282 - 286, English
    [Refereed]
    Scientific journal

  • K. Oda, I. Csige, T. Yamauchi, H. Miyake, E. V. Benton
    1993, Nuclear Tracks And Radiation Measurements (1993), 22(1-4) (1-4), 729 - 732, English
    [Refereed]
    Scientific journal

  • T YAMAUCHI, K ODA, H MIYAKE
    Oct. 1992, NUCLEAR TRACKS AND RADIATION MEASUREMENTS, 20(4) (4), 615 - 617, English
    [Refereed]
    Scientific journal

  • T YAMAUCHI, S YAMANAKA, M MIYAKE
    Jul. 1992, JOURNAL OF NUCLEAR MATERIALS, 189(2) (2), 217 - 221, English
    [Refereed]
    Scientific journal

  • T YAMAUCHI, S YAMANAKA, M MIYAKE
    Mar. 1991, JOURNAL OF NUCLEAR MATERIALS, 179, 308 - 311, English
    [Refereed]
    Scientific journal

  • H ATSUMI, T YAMAUCHI, M MIYAKE
    Mar. 1991, JOURNAL OF NUCLEAR MATERIALS, 179, 227 - 230, English
    [Refereed]
    Scientific journal

  • T YAMAUCHI, S YAMANAKA, M MIYAKE
    Nov. 1990, JOURNAL OF NUCLEAR MATERIALS, 174(1) (1), 53 - 59, English
    [Refereed]
    Scientific journal

  • Diffusion Coefficient and Concentration of Oxygen in CR-39 Track Detector
    Horoshi Miyaka, Tomoya Yamauchi, Keiji Oda
    Aug. 1990, Ionzing Radiation, Vol.16, No.3, pp.59-70, Japanese
    [Refereed]
    Scientific journal

  • T YAMAUCHI, S TOKURA, S YAMANAKA, M MIYAKE
    Jul. 1988, JOURNAL OF NUCLEAR MATERIALS, 155, 438 - 442, English
    [Refereed]
    Scientific journal

  • S TOKURA, H ATSUMI, T YAMAUCHI, M SHINNO, S YAMANAKA, M MIYAKE
    Jul. 1988, JOURNAL OF NUCLEAR MATERIALS, 155, 246 - 250, English
    [Refereed]
    Scientific journal

  • H ATSUMI, S TOKURA, T YAMAUCHI, S YAMANAKA, M MIYAKE
    Nov. 1986, JOURNAL OF NUCLEAR MATERIALS, 141, 258 - 261, English
    [Refereed]
    Scientific journal

■ MISC
  • Modified structurer along nuclear tracks in etched track detectors
    YAMAUCHI TOMOYA, Tamon Kusumoto, Yoshitaka Terashita, Kazuki Azuma, Takuya Otani, Morikazu Sakai, Ken Hamano, Akihiro Chiba, Satoshi Kodaira
    量子科学技術研究開発機構, Dec. 2018, 平成29年度放医研サイクロトロン利用報告書, QST-M-15, 36 - 39, Japanese
    Technical report

  • ホウ素イオンを照射したポリカーボネート薄膜中放射線損傷の面分布
    浜野拳, 楠本多聞, 東和樹, 大谷拓也, 酒井盛和, 金崎真聡, 小田啓二, 小平聡, 山内知也
    05 Sep. 2018, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 79th, ROMBUNNO.20a‐224B‐4, Japanese

  • 検出閾値周辺におけるポリエチレンテレフタレート中イオントラック構造の研究
    千葉昌寛, 楠本多聞, 東和樹, 大谷拓也, 酒井盛寿, 金崎真聡, 小田啓二, 小平聡, 山内知也
    05 Sep. 2018, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 79th, ROMBUNNO.20a‐224B‐3, Japanese

  • FT‐IRを用いたナイロン6の水素イオン照射による吸光度変化と化学的損傷パラメータ
    酒井盛寿, 楠本多聞, 小平聡, 千葉昌寛, 濱野拳, 金崎真聡, 小田啓二, 山内知也
    05 Sep. 2018, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 79th, ROMBUNNO.20a‐224B‐5, Japanese

  • ESR法を用いたガンマ線照射によるPADC検出器中の損傷評価
    大谷拓也, 楠本多聞, 金崎真聡, 小田啓二, 小林一雄, 譽田義英, 藤乗幸子, 山内知也
    05 Sep. 2018, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 79th, ROMBUNNO.20a‐224B‐2, Japanese

  • イオントラックに沿ったヒドロキシル基密度によるPADC飛跡検出器の応答特性
    東和樹, 千葉昌寛, 濱野拳, 楠本多聞, 金崎真聡, 小田啓二, 小平聡, 山内知也
    05 Sep. 2018, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 79th, ROMBUNNO.20a‐224B‐1, Japanese

  • エッチング型飛跡検出器の閾値に対する化学的クライテリオンの確立
    山内知也, 楠本多聞, 楠本多聞, 寺下佳孝, 東和樹, 大谷拓也, 酒井盛寿, 金崎真聡, 小田啓二, 小平聡, 小西輝昭, BARILLON R
    Sep. 2018, 量子科学技術研究開発機構研究報告書(Web), (8) (8), 135‐136 (WEB ONLY), Japanese

  • YAMAUCHI TOMOYA
    Iwanami Shoten, Sep. 2018, Science Journal KAGAKU, 88(9) (9), 0906 - 0914, Japanese
    [Invited]
    Introduction commerce magazine
    Link to Kobe Univ. Repository (Kernel)

  • PADC検出器の閾値を記述する新しい物理概念としてのイオントラック内径方向電子フルエンス
    楠本多聞, 楠本多聞, EL BITAR Ziad, 岡田勝吾, GILLET Pierre, ARBOR Nicolas, 森豊, 金崎真聡, 小田啓二, NOURREDINE Abdel‐Mijid, 藏重久弥, FROMM Michel, CLOUTIER Pierre, BASS Andrew D, 小平聡, SANCHE Leon, BARILLON Remi, 山内知也
    05 Mar. 2018, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 65th, ROMBUNNO.17p‐A304‐1, Japanese

  • 局所線量分布の現代的更新とPET検出器への活用
    酒井盛寿, 楠本多聞, 楠本多聞, 寺下佳孝, 金崎真聡, 小田啓二, 山内知也
    05 Mar. 2018, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 65th, ROMBUNNO.17p‐A304‐5, Japanese

  • PADC検出器中イオントラック内の段階的損傷形成過程
    大谷拓也, 楠本多聞, 寺下佳孝, 金崎真聡, 小田啓二, 小林一雄, 譽田義英, 藤乗幸子, 山内知也
    05 Mar. 2018, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 65th, ROMBUNNO.17p‐A304‐3, Japanese

  • Modified structure along nulear tracks in etched track detrectors
    YAMAUCHI TOMOYA, Kusumoto Tamon, Yoshitaka Terashita, Takahiro Ueda, Takuya Ueno, Satoshi Kodaira
    量子科学技術研究開発機構, Dec. 2017, 平成２８年度放医研サイクロトロン利用報告書, QST-M-6, Japanese
    Technical report

  • 高分子系飛跡検出器の応答特性を表す化学的クライテリオンの確立
    山内知也, 楠本多聞, 楠本多聞, 上田隆裕, 上野琢也, 亀田結貴, 寺下佳孝, 金崎真聡, 小田啓二, 北村尚, 小平聡, 小西輝昭, BARILLON R
    Sep. 2017, 量子科学技術研究開発機構研究報告書(Web), (6) (6), 161‐162 (WEB ONLY), Japanese

  • Structure of Latent Tracks in Polymeric Etched Track Detectors
    楠本 多聞, 森 豊, 山内 知也
    電気学会, 29 Mar. 2017, 電気学会研究会資料. OQD = The papers of technical meeting on optical and quantum devices, IEE Japan, 2017(26) (26), 5 - 10, Japanese

  • クラスターターゲットから発生するレーザー加速イオンの高精度計測
    金崎真聡, 神野智史, 榊泰直, 近藤公伯, 小田啓二, 山内知也, 福田祐仁
    2017, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 64th

  • Modified structure along nuclear tracks in etched track detectors
    YAMAUCHI TOMOYA, Tamon Kusumoto, Takahiro Ueda, Takuya Ueno, Satoshi Kodaira, Hisashi Kitamura
    ポリアリルジグリコールカーボネート（PADC）は、エッチング型飛跡検出器としては最も高い感度を有する高分子材料であり、そこに形成されるプロトンのイオントラック構造について赤外線分光法を用いた分析を実施した。照射したプロトンのエネルギーは検出閾値以下であり、エッチピットは形成されない（20、30、70 MeV）。PADCに関しては、HIMAC共同利用研究として、5.7 MeVプロトンとHeからXeまでの重イオン照射後の分析を行っているので、阻止能としては、1.2から12,000 keV/µmの範囲をカバーする充実したデータが蓄積された。イオントラック構造の特性を表現するために、三種類の化学的損傷パラメータを用いた。それらは損傷密度（イオントラックの単位長さあたりの着目する官能基の損失数）と実効的トラックコア半径（着目する官能基が失われている径方向の広が
    National Institute of Radiological Sciences, Oct. 2016, 平成２７年度サイクロトロン利用報告書, NIRS-M-290, 50 - 54, Japanese
    Report research institution

  • Modified structure along nuclear tracks in etched track detectors
    YAMAUCHI TOMOYA, Tamon Kusumoto, Ryunosuke Ikenaga, Shuichiro Yasuda, Satoshi Kodaira, Hisashi Kitamura
    ポリアリルジグリコールカーボネート（PADC）をはじめとする種々の高分子系飛跡検出器中に形成されるプロトントラックの構造上の特徴を分析化学的に明らかにし、重イオントラックに関する結果との総合的な比較検討を通じて、イオントラック形成機構解明のための基礎的知見を得ることを目的とする。関連するPADCについてのHIMACからのプロトンと重イオンを利用した研究を振り返ると、阻止能領域では10～12000 keV/μmの領域での分析に取り組んできたが、今回実施した30 MeVプロトンの阻止能は2.5 keV/µmであった。放射線感受性が最も高いエーテル基に着目すると、その損失の実効的トラックコア半径は 0.26 nmであり、同損失の放射線化学収率（G値）は100 eVあたり24であった。このG値は、Co-60線源からのガンマ線や5.7 MeVプロトン照射におけ
    National Institute of Radiological Sciences, Oct. 2015, 平成２６年度サイクロトロン利用報告書, NIRS-M-284, 44 - 47, Japanese
    Report research institution

  • クラスターターゲットを用いたレーザー駆動イオン加速における背景ガスイオンの加速
    KANASAKI MASATO, JINNO SATOSHI, SAKAKI HIRONAO, FAENOV A. YA, PIKUZ T.A, NISHIUCHI MAMIKO, KIRIYAMA HIROMITSU, KANDO MASAKI, KONDO KIMINORI, MATSUI RYUTARO, SCULLION C, SMYTH A.G, AARON A, DORIA D, BORGHESI M, ODA KEIJI, YAMAUCHI TOMOYA, KISHIMOTO YASUAKI, FUKUDA YUJI
    26 Feb. 2015, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 62nd, ROMBUNNO.14A-A15-3, Japanese

  • レーザー駆動イオン加速における光中性子発生を考慮したイオン計測体系の設計
    金崎真聡, 神野智史, 榊泰直, 近藤公伯, 小田啓二, 山内知也, 福田祐仁
    2015, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 76th

  • 重イオン成分を含む混成場への固体飛跡検出器群の適用
    山内知也, ELYWA Mohammed, 楠本多聞, 田尾陽, 池永龍之介, 安田修一郎, 小田啓二, 小平聡, 北村尚, 西内満美子, 榊泰直, 金崎真聡, 福田祐仁, 近藤公伯
    2015, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 62nd

  • 28pTN-7 Measurements of the electron temperature from the laser-driven acceleration
    Sakaki H., Nishiuchi M., Maeda S., Ishida A., Yamashita T., Katahira K., Pikuz Taniana A., Faenov Anatory Ya., Esirkepov Timur, Pirozhkov Alexander S., Matsukawa K., Sagisaka A., Ogura K., Kanasaki M., Kiriyama H., Fukuda Y., Yamauchi T., Watanabe Y., Kondo K.
    The Physical Society of Japan (JPS), 05 Mar. 2014, Meeting abstracts of the Physical Society of Japan, 69(1) (1), 266 - 266, Japanese

  • クラスターターゲットから発生するMeV級イオンの空間分布
    KANASAKI MASATO, JINNO SATOSHI, SAKAKI HIRONAO, NISHIUCHI MAMIKO, KONDO KIMINORI, ODA KEIJI, YAMAUCHI TOMOYA, MATSUI RYUTARO, KISHIMOTO YASUAKI, DORIA D, BORGHESI M, FUKUDA YUJI
    03 Mar. 2014, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 61st, ROMBUNNO.17A-F7-1, Japanese

  • 薄膜ターゲットを用いたレーザー駆動陽子加速
    匂坂明人, 西内満美子, PIROZHKOV Alexander S., 小倉浩一, 榊泰直, 前田祥太, 前田祥太, PIKUZ Tatiana A., FAENOV Anatoly Ya., 福田祐仁, 金崎真聡, 金崎真聡, 松川兼也, 松川兼也, 神門正城, 桐山博光, 岡田大, 金沢修平, 近藤修司, 下村拓也, 中井善基, 田上学, 境誠司, 渡辺幸信, 山内知也, ESIRKEPOV Timur Zh., BULANOV Sergei V., 近藤公伯
    2014, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 61st

  • レーザー駆動型重イオン源の可能性
    西内満美子, 榊泰直, 西尾勝久, 佐甲博之, PIKUZ Taniana, PIKUZ Taniana, FAENOV Anatory, FAENOV Anatory, TIMUR Esirkepov, PIROZIKOV Alexander, 松川健也, 前田祥太, 匂坂明人, 小倉浩一, 金崎真聡, 金崎真聡, 桐山博光, 福田祐二, 神門正城, 山内知也, 渡辺幸信, BULANOV Sergei, 近藤公伯, 今井憲一, 永宮正治
    2014, 日本物理学会講演概要集, 69(1) (1)

  • 高閾値型飛跡検出器としてのポリエチレンテレフタレートの研究
    田尾陽, 森豊, 小平聡, 小西輝昭, 小田啓二, 山内知也
    2013, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 74th

  • ポリイミド薄膜の重イオン応答特性評価
    松川兼也, 森豊, 小田啓二, 小西輝昭, 小平聡, 北村尚, 山内知也
    2013, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 74th

  • PADC中潜在飛跡近傍における水の定量評価
    又井悠里, 金崎真聡, 森豊, 小田啓二, 小平聡, 小西輝昭, 山内知也
    2013, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 74th

  • 重イオンに対するPADC検出器の応答特性
    楠本多聞, 森豊, 小田啓二, 小西輝昭, 小平聡, 北村尚, 安田仲宏, 山内知也
    2013, 応用物理学会秋季学術講演会講演予稿集(CD-ROM), 74th

  • 高コントラスト超高強度短パルスレーザーJ-KARENによるレーザー駆動イオン加速実験
    西内満美子, 榊泰直, 匂坂明人, 前田祥太, 前田祥太, PIROZHKOV A. S., PIKUZ T. A., PIKUZ T. A., FAENOV A. Ya., FAENOV A. Ya., 小倉浩一, 福田祐仁, 松川兼也, 松川兼也, 田尾陽, 田尾陽, 楠本多聞, 楠本多聞, 金崎真聡, 金崎真聡, 森豊, 神門正城, ESIRKEPOV T. Zh., 岡田大, 桐山博光, 下村拓也, 田上学, 中井善基, 岡本征洋, 鳥本和弘, 近藤修二, 金沢修平, 松本吉弘, 圓谷志郎, 境誠司, 錦野将元, 河内哲也, 山内知也, 渡辺幸信, BULANOV S. V.
    2013, 日本物理学会講演概要集, 68(2) (2)

  • 超高強度超短パルスレーザーの薄膜照射で発生する電子スペクトル計測
    前田祥太, 前田祥太, 西内満美子, 榊泰直, 匂坂明人, PIROZHKOV A. S., PIKUZ T. A., PIKUZ T. A., FAENOV A. Ya., FAENOV A. Ya., 小倉浩一, 福田祐仁, 松川兼也, 松川兼也, 田尾陽, 田尾陽, 楠本多聞, 楠本多聞, 金崎真聡, 金崎真聡, 森豊, 神門正城, ESIRKEPOV T. Zh., 岡田大, 桐山博光, 下村拓也, 田上学, 中井善基, 岡本征洋, 鳥本和弘, 近藤修二, 金沢修平, 松本吉弘, 圓谷志郎, 境誠司, 錦野将元, 河内哲也, 山内知也, 渡辺幸信, BULANOV S. V.
    2013, 日本物理学会講演概要集, 68(2) (2)

  • レーザー駆動イオンビーム計測における光中性子の影響評価
    金崎真聡, 金崎真聡, 福田祐仁, 榊泰直, 余語覚文, 神野智史, 西内満美子, 服部篤人, 松川兼也, 近藤公伯, 小田啓二, 山内知也
    2013, 応用物理学会春季学術講演会講演予稿集(CD-ROM), 60th

  • Ion acceleration experiment with high contrast short pulse high intensity laser J-KAREN
    Nishiuchi M, Matsukawa K, Tao A, Kusumoto T, Kanasaki M, Mori Y, Kando M, Esirkepov T.Zh, Okada H, Kiriyama H, Shimomura T, Sakaki H, Tanoue M, Nakai Y, Okamoto M, Torimoto K, Kondo S, Kanazawa S, Matsumoto Y, Entani S, Sakai S, Nishikino M, Sagisaka A, Kawauchi T, Yamauchi T, Watanabe Y, Bulanov S.V, Kondo K, Maeda S, Pirozhkov A.S, Pikuz T.A, Faenov Ya, Ogura K, Fukuda Y
    The Physical Society of Japan, 2013, Meeting Abstracts of the Physical Society of Japan, 68(0) (0), 199 - 199, Japanese

  • Measurement of electron spectrum generated by irradiating thin-Foil target with Ultra-intense Ultra-short pulse laser.
    Maeda S, Matsukawa K, Tao A, Kusumoto T, Kanasaki M, Mori Y, Kando M, Esirkepov T.Zh, Okada H, Kiriyama H, Shimomura T, Nishiuchi M, Tanoue M, Nakai Y, Okamoto M, Torimoto K, Kondo S, Kanazawa S, Matsumoto Y, Entani S, Sakai S, Nishikino M, Sakaki H, Kawauchi T, Yamauchi T, Watanabe Y, Bulanov S.V, Kondo K, Sagisaka A, Pirozhkov A.S, Pikuz T.A, Faenov Ya, Ogura K, Fukuda Y
    The Physical Society of Japan, 2013, Meeting Abstracts of the Physical Society of Japan, 68(0) (0), 200 - 200, Japanese

  • Evaluation of neutron from the laser-driven acceleration
    Sakaki H, Matsukawa K, Tao A, Kusumoto T, Kanasaki M, Yamauchi T, Watanabe Y, Kondo K, Nishiuchi M, Maeda S, Sagisaka A, Pirozhkov A.S, Pikuz T.A, Faenov A.Ya, Ogura K, Fukuda Y
    The Physical Society of Japan, 2013, Meeting Abstracts of the Physical Society of Japan, 68(0) (0), 200 - 200, Japanese

  • Satoshi Kodaira, Tomoya Yamauchi
    Sep. 2012, Houshasenkagaku (Radiation Chemistry), 94, 27-40, Japanese
    [Refereed]
    Introduction scientific journal

  • 18pFJ-8 Laser-driven ion acceleration from thin foil target at JAEA
    Nishiuchi M., Ogura K., Tanimoto T., Pirozhkov Alexander S., Sakaki H., Fukuda Y., Kanasaki M., Kando M., Esirkepov T. Zh., Sagisaka A., Yogo A., Shimomura T., Tanoue M., Nakai Y., Matsumoto Y., Entani S., Sakai S., Yamauchi T., Kondo K.
    The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67(2) (2), 195 - 195, Japanese

  • Masato Kanasaki, Yuji Fukuda, Hironao Sakaki, Mamiko Nishiuchi, Kiminori Kondo, Satoshi Kurashima, Tomihiro Kamiya, Atsuto Hattori, Keiji Oda, Tomoya Yamauchi
    May 2012, Journal of Plasma and Fusion Research, 88, 5, 261-275, Japanese
    Introduction scientific journal

  • Records of Workshop on Solids State Nuclear Track Detectors in Kobe University, 2011
    Tomoya Yamauchi
    応用物理学会放射線分科会, Oct. 2011, Ionizing Radiation, Vol. 37, No. 3, pp. 179-183(3) (3), 179 - 183, Japanese
    Others

  • Tomoya Yamauchi
    Oct. 2011, 小学図書館ニュース付録, 第992号, p. 1, Japanese
    Others
    Link to Kobe Univ. Repository (Kernel)

  • Anomalous contact angle of water droplets on the proton irradiate PADC track detectors
    Yusuke Maeda, Yutaka Mori, Masato Kanasaki, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda, Sachiko Tojo, Yoshihide Honda, Koji Kuraoka
    Kobe University, Jul. 2011, Review of the Faculty of Maritime Sciences, Kobe University, 8, 21 - 29, Japanese

  • 後方散乱粒子を用いた高エネルギーイオンビームの特性診断
    福田祐仁, 榊泰直, 堀利彦, 反保元伸, 倉島聡, 神谷富裕, 近藤公伯, 金崎真聡, 金崎真聡, 山内知也
    2011, 応用物理学関係連合講演会講演予稿集(CD-ROM), 58th

  • CR-39を用いた後方散乱粒子による高強度イオンビーム特性簡易診断法
    金崎真聡, 金崎真聡, 山内知也, 福田祐仁, 榊泰直, 堀利彦, 反保元伸, 倉島俊, 神谷富裕, 近藤公伯
    2011, 応用物理学関係連合講演会講演予稿集(CD-ROM), 58th

  • クラスターターゲットを用いたレーザー駆動イオン加速
    福田祐仁, FAENOV A. Ya., FAENOV A. Ya., 反保元伸, PIKUZA T. A., PIKUZA T. A., 中村龍史, 神門正城, 林由紀雄, 本間隆之, 川瀬啓悟, 小瀧秀行, 余語覚文, 榊泰直, PIROZHKOV A. S., 小倉浩, 森道昭, ESIRKEPOV T. Zh., 甲賀ジェームス, BOLDAREV A. S., GASILOV V. A., MAGUNOV A. I., 兒玉了祐, 山内知也, BOLTON P. R., 加藤義章, 田島俊樹, 大道博行, BULANOV S. V., BULANOV S. V.
    2010, 日本物理学会講演概要集, 65(1) (1)

  • クラスターターゲットを用いたイオン加速
    福田祐仁, FAENOV A. Ya., FAENOV A. Ya., 反保元伸, PIKUZ T. A., PIKUZ T. A., 中村龍史, 神門正城, 林由紀雄, 余語覚文, 榊泰直, 川瀬啓悟, PIROZHKOV A. S., 小倉浩一, 森道昭, ESIRKEPOV T. Zh., 甲賀ジェームス, 山内知也, 兒玉了祐, BOLTON P. R., 近藤公伯, 河西俊一, 加藤義章, 田島俊樹, 大道博行, BULANOV S. V., BULANOV S. V.
    2010, 応用物理学会学術講演会講演予稿集(CD-ROM), 71st

  • Fukuda Y., Yogo A., Sakaki H., Kameshima T., Pirozhkov A. S., Ogura K., Mori M., Esirkepov T. Zh., Koga J., Boldarev A. S., Faenov A. Ya., Gasikov V. A., Magunov A. I., Kodama R., Yamauchi T., Bolton P. R., Kato Y., Tajima T., Daido H., Bulanov S. V., Tampo M., Pikuz T. A., Nakamura T., Kando M., Hayashi Y.
    The Physical Society of Japan, 2010, Meeting Abstracts of the Physical Society of Japan, 65(0) (0), 250 - 250, Japanese

  • クラスターターゲットを用いたレーザー駆動イオン加速の高エネルギー化
    福田祐仁, FAENOV A.Ya., FAENOV A.Ya., 反保元伸, PIKUZ T.A., 中村龍史, 神門正城, 林由紀雄, 本間隆之, 川瀬啓悟, 余語覚文, 榊泰直, PIROZHKOV A.S., 小倉浩, 森道昭, ESIRKEPOV T.Zh., 甲賀ジェームス, BOLDAREV A.S., GASILOV V.A., MAGUNOV A.I., 兒玉了祐, 山内知也, BOLTON P.R., 加藤義章, 田島俊樹, 大道博行, BULANOV S.V., BULANOV S.V.
    2009, 分子科学討論会講演プログラム&要旨(Web), 3rd

  • 飛跡検出器と原子間力顕微鏡とを利用した超高強度レーザー照射誘起イオンおよび光子の測定
    山内知也, 芦田洋之, 嶺山太佑, 小田啓二, 反保元伸, 児玉了祐, 山中龍彦
    2002, 大阪大学レーザー核融合研究センター共同研究成果報告書, 2001

  • KCl:Eu Element as an Optically Stimulated Luminescence Dosimeter
    Tsujii Masanori, Tagawa Hiroshi, Sabi Isamu, Yamauchi Tomoya, Oda Keiji
    Kobe University, Jul. 1997, Review of Kobe University of Mercantile Marine. Part II, Maritime studies, and science and engineering, 45, 135 - 140, Japanese

■ Books And Other Publications
  • 核と放射線の現代史 開発 被ばく 抵抗
    若尾裕司, 木戸衛一編, 北村陽子, 中尾麻伊香, 高椅博子, 市川浩, 小島智恵子, 友次晋介, 佐藤温子, 川口悠子, 和田喜彦, 山本昭宏, 後藤宣代, 藤岡毅, 山内知也, 竹本真希子
    Contributor, 昭和堂, Mar. 2021

  • 放射線被ばくによる健康影響とリスク評価 欧州放射線リスク委員会（ECRR）2010年勧告
    YAMAUCHI TOMOYA
    Joint translation, 明石書店, Nov. 2011, Japanese, 現在放射線リスクの国際的権威とされている国際放射線防護委員会（ICRP）のリスクモデルの分析・批判を目的に97年に設立された欧州放射線リスク委員会・ECRR。ICRPが基礎としてきた倫理的・法的原則の見直しから、主には低線量放射線の健康影響・損害に関して、内部被曝を考慮に入れた新たなリスクモデルを提起したECRR勧告日本語版。
    Scholarly book

■ Lectures, oral presentations, etc.
  • An attempt to describe the enhanced bulk-etching-rate by the formation density of hydroxyl group in PADC detectors
    Reo Yamada, Atsushi Kimoto, Seiichi Hayato, Tamon Kusumoto, Satoshi Kodaira, Sachiko Tojo, Masato Kanasaki, Tomoya Yamauchi
    第86回応用物理学会秋季学術講演会, Sep. 2025, Japanese
    Oral presentation

  • Effects of 172 nm UV lights on PADC track detector
    Atsushi Kimoto, Masato Kanasaki, Tomoya Yamauchi
    The 86th JSAP Autumn Meeting 2025, Sep. 2025, Japanese
    Oral presentation

  • 固体飛跡検出器CR-39によるレーザー加速陽子線のエネルギースペクトル計測
    尾崎玲於奈, 井上千裕, 望月誠一郎, 豊永啓太, 前川馨, 山内知也, 金崎真聡, 福田祐仁
    36回固体飛跡検出器研究会, Mar. 2024, Japanese

  • Particle-In-Cellシミュレーションを用いた求心衝撃波による高エネルギー陽子線生成条件の解析
    合原輔佑太, 井上千裕, 山内知也, 福田祐仁, 金崎真聡
    第36回固体飛跡 検出器研究会, Mar. 2024, Japanese

  • 高強度レーザーとアルゴンクラスターの相互作用領域から 発生するイオンのピンホールイメージング
    苺谷有哉, 井上千裕, 望月政一郎, 尾崎玲於奈, 豊永啓太, 前川馨, 合原輔佑太, 山内知也, 福田祐仁, 金崎真聡
    第36回固体飛跡検出器研究会, Mar. 2024, Japanese

  • 高強度レーザーとクラスターターゲットとの 相互作用におけるプラズマミラーの効果
    福田祐仁, 金崎真聡, 浅井孝文, 井上千裕, 望月政一郎, 尾崎玲於奈, 豊永啓太, 前川 馨, 南 卓海, 境健太郎, 姫野公輔, 田口智也, 小田和昌, 鈴木蒼一郎, 二階堂颯佳, 倉本恭誓, 安井稔遥, 諌山翔伍, 田中周太, 時安敦史, 郡 英輝, S.N.Ryazantsev, T. Pikuz, 小平 聡, 山内知也, 安部勇輝, 蔵満康浩, 今 亮, 近藤康太郎, 眞柴雄司, 宮 坂泰弘, 匂坂明人, 小倉浩一, 桐山博光
    第36回固体飛跡検出器研究会, Mar. 2024, Japanese

  • ガンマ線照射による PADC 検出器の構造変化
    小日向大輔, 保田賢, 石原文太, 貞光俊俊斗, 勢一隼人, 山田怜央, 金崎真聡, 山内知 也, 楠本多聞, 小平聡, 藤乗幸子, 誉田義英
    第36回固体飛跡検出器研究会, Mar. 2024, Japanese

  • 極低温照射後のアニーリング過程における PADC 中ヒドロキシル基の生成
    貞光俊斗, 山内知也, 金崎真聡, 山田怜央, 勢一隼人, 小日向大輔, 小平聡, 楠本多 聞, Yvette NGONO-RAVACHE
    第36回固体飛跡検出器研究会, Mar. 2024, Japanese

  • PADC 中に形成される放射線損傷におけるエーテル基損失量とヒドロキシル基生成量との相関
    山田怜央, 保田賢, 石原文太, 小日向大輔, 貞光俊斗, 楠本多聞, 小平聡, 山内知也
    第36回固体飛跡検出器研究会, Mar. 2024, Japanese

  • 波動方程式を用いたエッチピットト成長挙動の新しいシミュレーション
    勢一隼人, 山内知也
    第36回固体飛跡検出器研究会, Mar. 2024, Japanese

  • PADC検出器中水素同位体の応答特性と”Missing track effect”
    山内知也
    第36回固体飛跡検出器研究会, Mar. 2024, Japanese
    Oral presentation

  • 昇温脱離分析による CuNiZr 試料中にトラップされた He-3の検出
    金崎真聡, 東柊斗, 山内知也
    第36回固体飛跡検出器研究会, Mar. 2024

  • 加速器分析による CuNiZr 試料中にトラップ された He-3の検出
    金崎真聡, 田邉寛之, 東柊斗, 山内知也
    第36回固体飛跡検出器研究会, Mar. 2024, Japanese

  • 陽子線ビーム照射による アミノ酸の化学進化
    中川和道, 柴田裕実, 三田肇, 金崎真聡, 谷池晃, 山内知也
    第36回固体飛跡検出器研究会, Mar. 2024, Japanese

  • 高強度レーザーと水素クラスターターゲットの相互作用による準単色MeV級陽子線加速メカニズム
    井上千裕, 合原輔佑太, 金崎真聡, 山内知也, 福田祐仁
    レーザー学会学術講演会第44回年次大会, Jan. 2024, Japanese
    Oral presentation

  • 水素クラスターターゲットを用いたレーザー駆動イオン加速におけるプラズマミラーの効果
    金崎真聡, 浅井孝文, 鍛治賢志, 田邉寛之, 井上千裕, 望月政一郎, 尾崎玲於奈, 豊永 啓太, 前川馨, 安井稔遥, 倉本恭誓, 酒井優一, 田中崇寛, 小田和昌, 鈴木蒼一郎, 二 階堂颯佳, 田口智也, 姫野公輔, 境健太郎, 南卓海, Lan Zechen, 今亮, 近藤康太郎, 宮坂泰弘, 眞柴雄司, 匂坂明人, 小倉浩一, 早川岳人, 余語覚文, 小平聡, 田中周太, 諌山翔伍, PikuzTatiana, 時安敦史, 郡英輝, 安部勇輝, 蔵満康浩, 山内知也, 桐山博光, 福田祐仁
    レーザー学会学術講演会第44回年次大会, Jan. 2024, Japanese
    Oral presentation

  • Detection of He-3 Trapped in CuNiZr Materials by Thermal Desorption Spectrometry
    Shuto Higashi, Tomoya Yamauchi, Masato Kanasaki
    The 24th Meeting of Japan CF-Research Society,, Dec. 2023, English
    Oral presentation

  • Studies on latent tracks in PADC nuclear track detectors
    TomoyaYamauchi
    The 28th International Conference on Nuclear Tracks & Radiation Measurements, Nov. 2023, English
    [Invited]
    Invited oral presentation

  • A role of radiation tolerance of methine groups in PADC nuclear track detectors
    Masato Kanasaki, Taiyo Itoh, Kouta Mune, Ken Yasuda, Bunta Ishihara, Shunto Sadamitsu, Daisuke Kohinata, Yutaka Mori, Ippei Ishikawa, Tamon Kusumoto, Satoshi Kodaira, Rémi Barillon, Tomoya Yamauchi
    The 28th International Conference on Nuclear Tracks & Radiation Measurements, Nov. 2023, English
    Oral presentation

  • Hydroxide formation density as a chemical parameter describing response of PADC nuclear track detectors
    Tomoya Yamauchi, Shunto Sadamitsu, Daisuke Kohinata, Ken Yasuda, Bunta Ishihar, Yutaka Mori, Masato Kanasaki, Tamon Kusumoto, Satoshi Kodaira, Sachiko Tojo, Quentin Raffy, Rémi Barillon
    The 28th International Conference on Nuclear Tracks & Radiation Measurements, Nov. 2023, English
    Oral presentation

  • New Hydrogen Fusion Energy
    Akito Takahashi, Joji Hachisuka, Masato Kanasaki, Tomoya Yamauchi
    The 24th Meeting of Japan CF-Research Society, Nov. 2023, English
    Oral presentation

  • CR-39(TechnoTrak)に形成される陽子線と重陽子線のエッチピット識別
    望月政一郎, 井上千裕, 尾崎玲於奈, 豊永啓太, 前川馨, 山内知也, 福田祐仁, 金崎真聡
    第84回応用物理学会秋季学術講演会, Sep. 2023, Japanese
    Oral presentation

  • 高強度レーザーと水素クラスターの相互作用で発生する第二高調波の輝度と陽子線エネルギーとの相関
    豊永啓太, 井上千裕, 望月政一郎, 尾崎玲於奈, 前川馨, 山内知也, 福田祐仁, 金崎真聡
    第84回応用物理学会秋季学術講演会, Sep. 2023, Japanese
    Oral presentation

  • 高強度レーザーと水素クラスターターゲットの相互作用におけるレーザープレパルスが陽子線加速に及ぼす影響
    前川馨, 井上千裕, 望月政一郎, 尾崎玲於奈, 豊永啓太, 山内知也, 福田祐仁, 金崎真聡
    第84回応用物理学会秋季学術講演会, Sep. 2023
    Oral presentation

  • PADC 飛跡検出器のエッチング特性に及ぼすガンマ線照射効果
    小日向大輔, 貞光俊斗, 石原文太, 保田賢, 楠本多聞, 金崎真聡, 小平聡, 藤乗幸 子, 誉田 義英, 山内 知也
    第84回応用物理学会秋季学術講演会, Sep. 2023

  • レーザー照射された水素クラスターの非等方的膨張からの準単色陽子線発生
    井上千裕, 金崎真聡, 山内知也, 福田祐仁
    日本物理学会第78回年次大会, Sep. 2023

  • 高強度レーザーとクラスターターゲットとの相互作用におけるプラズマミラーの効果
    福田祐仁, 浅井孝文, 鍛治賢志, 田邉寛之, 井上千裕, 望月政一郎, 尾崎玲於奈, 豊永 啓太, 前川馨, 安井稔遥, 倉本恭誓, 酒井優一, 田中崇寛, 小田和昌, 鈴木蒼一郎, 二 階堂颯佳, 田口智也, 姫野公輔, 境健太郎, 南卓海, Zechen Lan, 今亮, 近藤康太郎, 宮坂泰弘, 眞柴雄司, 匂坂明人, 小倉浩一, 早川岳人, 余語覚文, 小平聡, 田中周太, 諌山翔伍, Tatiana Pikuz, 時安敦史, 郡英輝, 安部勇輝, 蔵満康浩, 山内知也, 金崎真聡, 桐山博光
    日本物理学会第78回年次大会, Sep. 2023, Japanese
    Oral presentation

  • PADC 飛跡検出器中に形成される Xe イオントラックの損傷構造
    保田賢, 石原文太, 小日向大輔, 貞光俊斗, 楠本多聞, 金崎真聡, 小平聡, 山内知也
    第84回応用物理学会秋季学術講演会, Sep. 2023, Japanese

  • Sensitization effect of CR-39 track detectors to protons and heavy ions by carbon dioxide treatment
    M. Kanasaki, K. Mune, T. Itoh, K. Yasuda, B. Ishihara, T. Kusumoto, S. Kodaira, R. Barillon, T. Yamauchi
    21st International Conference on Radiation Effects in Insulators, Sep. 2023, English
    Poster presentation

  • Modified structure around heavy ion tracks in Poly (allyl diglycol carbonate) PADC as a nuclear track detector
    K. Yasuda, Y. Mori, T. Kusumoto, S. Sadamitsu, B. Ishihara, D. Kohionata, M. Kanasaki, S. Kodaira, R. Barillon, T. Yamauchi
    21st International Conference on Radiation Effects in Insulators, Sep. 2023, English
    Poster presentation

  • 固体飛跡検出器CR-39によるレーザー加速陽子線のエネルギースペクトル計測
    尾崎玲於奈, 井上千裕, 望月政一郎, 豊永啓太, 前川馨, 山内知也, 福田祐仁, 金崎真聡
    第84回応用物理学会秋季学術講演会, Aug. 2023, Japanese
    Oral presentation

  • 検出閾値近傍のCイオンがPADC中に形成するイオントラックの特性評価
    貞光俊斗、保田賢、石原文太、小日向大輔、楠本多聞、金崎真聡、小平聡、山内知也, Aug. 2023

  • Modified structure around ion tracks generated in PADC plastic detectors
    保田 賢, 伊藤 大洋, 宗 晃汰, 石原 文太, 楠本 多聞, 金崎 真聡, 小平 聡, 山内 知也
    The 70th JSAP Spring Meeting 2023, Mar. 2023, Japanese

  • 二酸化炭素処理によるPADC検出器の重イオンに対する応答特性の向上 3
    宗 晃汰, 伊藤 大洋, 保田 賢, 石原 文太, 楠本 多聞, 金崎 真聡, 小平 聡, 山内 知也
    第83回応用物理学会秋季学術講演会, Sep. 2022, Japanese
    Oral presentation

  • 重合度を調整したPADC検出器の重イオンに対する感度評価 3
    伊藤 大洋, 宗 晃汰, 保田 賢, 石原 文太, 楠本 多聞, 金崎 真聡, 小平 聡, 石川 一平, 山内 知也
    第83回応用物理学会秋季学術講演会, Sep. 2022, Japanese
    Oral presentation

  • ガンマ線照射したPADC検出器のエッチング特性
    石原文太, 伊藤大洋, 宗晃汰, 田中俊裕, 橋本勇史, 林勇利, 誉田義英, 藤乗幸子, 金崎真聡, 山内知也
    第34回固体飛跡検出器研究会, Mar. 2022, Japanese
    Oral presentation

  • 二酸化炭素処理による PADC 検出器の重イオンに対する 応答特性の向上
    宗 晃汰, 橋本 勇史, 田中 俊裕, 林 勇利, 伊藤 大洋, 楠本 多聞, 金崎 真聡, 小平 聡, 山内 知也
    第34回固体飛跡検出器研究会, Mar. 2022, Japanese
    Oral presentation

  • 重合度を調整したPADC検出器の重イオンに対する感度評価 2
    伊藤 大洋, 橋本 勇史, 林 勇利, 田中 俊裕, 宗 晃汰, 楠本 多聞, 金崎 真聡, 小平 聡, 石川 一平, 山内 知也
    第34回固体飛跡検出器研究会, Mar. 2022, Japanese

  • PADC 検出器の重イオンに対する 応答特性の向上 2
    宗 晃汰, 橋本 勇史, 田中 俊裕, 林 勇利, 伊藤 大洋, 楠本 多聞, 金崎 真聡, 小平 聡, 山内 知也
    第69回応用物理学会春季学術講演会, Mar. 2022, Japanese
    Oral presentation

  • 重合度を調整したPADC検出器の重イオンに対する感度評価 2
    伊藤 大洋, 橋本 勇史, 林 勇利, 田中 俊裕, 宗 晃汰, 楠本 多聞, 金崎 真聡, 小平 聡, 石川 一平, 山内 知也
    第69回応用物理学会春季学術講演会, Mar. 2022, Japanese
    Oral presentation

  • 高分子系飛跡検出器中イオントラックの構造と形成機構
    山内知也
    日本原子力学会2022年春の年会, Mar. 2022, Japanese
    [Invited]
    Invited oral presentation

  • Automatization of cluster size measurement system for laser-driven ion acceleration
    Takashi Kaji, Masato Kanasaki, Takafumi Asai, Takato Nakagawa, Hiroyuki Tanabe, Satoshi Jinno, Tomoya Yamauchi, Yuji Fukuda
    International Conference on Materials and Systems for Sustainability 2021, Nov. 2021, English

  • Development of the New Method to Measure Laser-accelerated Sub-GeV Protons Utilizing Multiple Coulomb Scattering in an Emulsion Cloud Chamber
    T. Asai, M. Kanasaki, S. Jinno, N. Kitagawa, N. Shutoh, S. Kodaira, T. Yamauchi, K. Oda, K. Morishima, Y. Fukuda
    International Conference on Materials and Systems for Sustainability 2021, Nov. 2021, English

  • Measurement of Laser accelerated ions using active and passive ion detector systems
    Masato Kanasaki, Takafumi Asai, Takato Nakagawa, Takashi Kaji, Hiroyuki Tanabe, Satoshi Jinno, Kunihiro Morishima, Nobuko Kitagawa, Satoshi Kodaira, Tomoya Yamauchi, Yuji Fukuda
    International Conference on Materials and Systems for Sustainability 2021, Nov. 2021, English

  • Analysis Method of Laser-accelerated Sub-GeV-class Proton Tracks in Emulsion Cloud Chamber using Deep Learning Technique
    H. Tanabe, T. Asai, M. Kanasaki, S. Jinno, N. Kitagawa, N. Shutoh, S. Kodaira, T. Yamauchi, K. Oda, K. Morishima, Y. Fukuda
    International Conference on Materials and Systems for Sustainability 2021, Oct. 2021, English

  • Development of the simultaneous energy spectrometer for laser-accelerated ions and electrons,
    Takato Nakagawa, Masato Kanasaki, Takafumi Asai, Takashi Kaji, Hiroyuki Tanabe, Satoshi Jinno, Tomoya Yamauchi, Yuji Fukuda
    International Conference on Materials and Systems for Sustainability 2021, Oct. 2021, English

  • Sensitization of PADC detectors to heavy ions by carbon dioxide treatment
    Kouta Mune, Yushi Hashimoto, Toshihiro Tanaka, Yuri Hayashi, Taiyou Itou, Tamon Kusumoto, Masato Kanasaki, Satoshi Kodaira, Tomoya Yamauchi
    The 82nd JAPS Autumn Meeting 2021, Sep. 2021, Japanese
    Oral presentation

  • Structural modification along latent tracks of high energy heavy ions in poly(allyl diglycol carbonate) detectors -3
    Yuri Hayashi, Taiyou Itou, Kouta Mune, Yushi Hashimoto, Toshihiro Tanaka, Tamon Kusumoto, Masato Kanasaki, Satoshi Kodaira, Tomoya Yamauchi
    The 82nd JAPS Autumn Meeting 2021, Sep. 2021, Japanese
    Oral presentation

  • Depth-dependence of Sensitivity of Polycarbonate as a Solid-State Track Detector
    Yushi Hashimoto, Toshihiro Tanaka, Yuri Hayashi, Taiyo Ito, Kota Mune, Tamon Kusumoto, Masato Kanasaki, Satoshi Kodaira, Tomoya Yamauchi
    The 82nd JAPS Autumn Meeting 2021, Sep. 2021, Japanese
    Oral presentation

  • Response of PADC detector to heavy ions with several degree of polymerization
    Taiyo Ito, Yushi Hashimoto, Yuri Hayashi, Toshihiro Tanaka, Kota Mune, Tamon Kusumoto, Masato Kanasaki, Kodaira Satoshi, Ippei Ishikawa, Tomoya Yamauchi
    The 82nd JAPS Autumn Meeting 2021, Sep. 2021, Japanese
    Oral presentation

  • An evaluation of damaged structure around the detection threshold of polyethylene terephthalate as an etched track detector -3
    Toshihiro Tanaka, Tamon Kusumoto, Yuri Hayashi, Yushi Hashimoto, Kota Mune, Taiyo Ito, Masato Kanasaki, Satoshi Kodaira, Tomoya Yamauchi
    The 82nd JAPS Autumn Meeting 2021, Sep. 2021, Japanese
    Oral presentation

  • リアルタイムトムソンパラボラスペクトロメータを用いたレーザー加速されたアルゴン多価イオンの計測
    中川 貴斗, 金崎 真聡, 浅井 孝文, 鍛治 賢志, 田邊 寛之, 神野 智史, 山内 知也, 福田 祐仁
    第82回応用物理学会秋季学術講演会, Sep. 2021, Japanese

  • A New Measurement Method for Laser-accelerated Sub-GeV Protons utilizing Multiple Coulomb Scattering in an Emulsion Cloud Chamber
    Takafumi Asai, Masato Kanasaki, Satoshi Jinno, Nobuko Kitagawa, Nobumichi Shutoh, Satoshi Kodaira, Tomoya Yamauchi, Keiji Oda, Kunihiro Morishima, Yuji Fukuda
    HIGH ENERGY DENSITY SCIENCES 2021, Apr. 2021, English
    [Invited]
    Oral presentation

  • Determination of detection threshold of polycarbonate as a solid track detector -II
    Yushi Hashimoto, Tomoki Okada, Toshihiro Tanaka, Yuri Hayashi, Tamon Kusumoto, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Tomoya Yamauchi
    The 68th JAPS Spring Meeting, Mar. 2021, Japanese
    Oral presentation

  • Structural modification along latent tracks of high energy heavy ions in poly(allyl diglycol carbonate) detectors II
    Yuri Hayashi, Tomoki Okada, Yushi Hashimoto, Toshihiro Tanaka, Tamon Kusumoto, Masato Kanasaki, Satoshi Kodaira, Tomoya Yamauchi
    The 68th JAPS Spring Meeting, Mar. 2021, Japanese
    Oral presentation

  • An evaluation of damaged structure around the detection threshold of polyethylene terephthalate as an etched track detector
    Toshihiro Tanaka, Tamon Kusumoto, Tomoki Okada, Yuri Hayashi, Yushi Hashimoto, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Tomoya Yamauchi
    The 68th JAPS Spring Meeting, Mar. 2021, Japanese
    Oral presentation

  • An evaluation of damaged structure around the detection threshold of polyethylene terephthalate as an etched track detector
    Toshihiro Tanaka, Tamon Kusumoto, Tomoki Okada, Yuri Hayashi, Yushi Hashimoto, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Tomoya Yamauchi
    The 81st JSAP Autumn Meeting 2020, Sep. 2020, Japanese
    Oral presentation

  • Detection thresholds of poly(allyl diglycol carbonate) detectors for heavy ions
    Tomoki Okada, Toshihiro Tanaka, Yushi Hashimoto, Yuri Hayashi, Tamon Kusumoto, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Tomoya Yamauchi
    The 81st JSAP Autumn Meeting 2020, Sep. 2020, Japanese

  • Structural modification along ion tracks for high energy in poly(allyl diglycol carbonate) detectors and their detection thresholds
    Yuri Hayashi, Tomoki Okada, Yushi Hashimoto, Toshihiro Tanaka, Tamon Kusumoto, Masato Kanasaki, Satoshi Kodaira, Tomoya Yamauchi
    The 81st JSAP Autumn Meeting 2020, Sep. 2020, Japanese
    Oral presentation

  • Determination of detection threshold for polycarbonate as a solid track detector
    Yushi Hashimoto, Tomoki Okada, Toshihiro Tanaka, Yuri Hayashi, Tamon Kusumoto, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Tomoya Yamauchi
    The 81st JSAP Autumn Meeting 2020, Sep. 2020, Japanese
    Oral presentation

  • Structural modification along ion tracks for high energy in poly(allyl diglycol carbonate) detectors and their detection thresholds
    Tomoki Okada, Ken Hamano, Akihiro Chiba, Tamon Kusumoto, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Tomoya Yamauchi
    The 67th JSAP Spring Meeting 2020, Mar. 2020, Japanese
    Oral presentation

  • Application of Nuclear Emulsions for the Identification of Laser-accelerated Multi-MeV Protons
    T. Asai, M. Kanasaki, S. Jinno, N. Kitagawa, N. Shutoh, S. Kodaira, T. Yamauchi, K. Oda, K. Morishima, Y. Fukuda
    International Conference on Materials and Systems for Sustainability 2019, Nov. 2019, English, International conference
    Poster presentation

  • Measurement of Laser-accelerated Protons using Several Types of Track Detectors
    Masato Kanasaki, Satoshi Jinno, Kunihiro Morishima, Satoshi Kodaira, Takafumi Asai, Keita Sakamoto, Kazuki Shimizu, Keiji Oda, Tomoya Yamauchi, Yuji Fukuda
    International Conference on Materials and Systems for Sustainability 2019, Oct. 2019, English, International conference
    Oral presentation

  • Structural modification along ion tracks for in poly(allyl diglycol carbonate) detectors and their detection thresholds
    Tomoki Okada, Ken Hamano, Akihiro Chiba, Tamon Kusumoto, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Tomoya Yamauchi
    The 80th JSAP Autumn Meeting, 2019, Sep. 2019, Japanese, The Japan Society of Applied Physics, Sapporo Campus, Hokkaido University, Domestic conference
    Oral presentation

  • Evaluation of damaged structure around the detection threshold of polyethylene terephthalate by infrared spectrum and etching test
    Akihiro Chiba, Tamon Kusumoto, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Tomoya Yamauchi
    The 80th JSAP Autumn Meeting, 2019, Sep. 2019, Japanese, The Japan Society of Applied Physics, Sapporo Campus, Hokkaido University, Domestic conference
    Oral presentation

  • 異なる初期吸光度を有するポリカーボネート薄膜中イオントラック内損傷密度の核種依存性
    Ken Hamano, Tamon Kusumoto, Tomoki Okada, Masato Kanasaki, Keiji Oda, Tomoya Yamauchi
    The 80th JSAP Autumn Meeting, 2019, Sep. 2019, Japanese, The Japan Society of Applied Physics, Sapporo Campus, Hokkaido University, Domestic conference
    Oral presentation

  • リアルタイムトムソンパラボラスペクトロメータを用いた水素クラスターターゲットから発生した陽子線のエネルギースペクトル計測
    清水 和輝, 神野 智史, 金崎 真聡, 浅井 孝文, 坂本 渓太, 小田 啓二, 山内 知也, 古山 雄一, 谷池 晃, 福田 祐仁
    応用物理学会 第80回応用物理学会秋季学術講演会, Sep. 2019, Japanese, Domestic conference
    Oral presentation

  • 原子核乾板による100 MeV級レーザー加速プロトン計測
    浅井 孝文, 金崎 真聡, 神野 智史, 北川 暢子, 首藤 信通, 小平 聡, 山内 知也, 小田 啓二, 森島 邦博, 福田 祐仁
    応用物理学会 第80回応用物理学会秋季学術講演会, Sep. 2019, Japanese, Domestic conference
    Oral presentation

  • 固体飛跡検出器CR-39を用いた数百MeV級陽子線用エネルギースペクトロメータの開発
    坂本 渓太, 金崎 真聡, 浅井 孝文, 神野 智史, 小平 聡, 山内 知也, 小田 啓二, 福田 祐仁
    応用物理学会 第80回応用物理学会秋季学術講演会, Sep. 2019, Japanese, Domestic conference
    Oral presentation

  • Radial Electron Fluence around Ion Tracks as a Physical Parameter to Describe the Detection Thresholds of Etched Track Detectors
    Tomoya Yamauchi, Tamon Kusumoto, Shogo Okada, Satoshi Kodaira, Hisaya Kurashige, Ziad EL Bitar, Masato Kanasaki, Keiji Oda, Quentin Raffy, Abdel-Mjid Nourreddine, Remi Barillon
    19th International Conference on Solid State Dosimetry, Sep. 2019, English, International Conference Center Hiroshima, International conference
    Oral presentation

  • The Precise Measurements of Laser-accelerated Protons from Hydrogen Cluster Targets by CR-39 Track Detectors
    Masato Kanasaki, Kousaku Morii, Keita Sakamoto, Yuta Takano, Takafumi Asai, Kazuki Shimizu, Satoshi Jinno, Tomoya Yamauchi, Keiji Oda, Yuji Fukuda
    19th International Conference on Solid State Dosimetry, Sep. 2019, English, International conference
    Poster presentation

  • Chemical criterion for the dertection thresholds of etched nuclear track detectors
    YAMAUCHI TOMOYA
    2018 Anuual report of the research project with Heavy Ions at NIRS-HIMAC, Apr. 2019, Japanese, 千葉みなとポートホテル, Domestic conference
    Oral presentation

  • Evaluation of damage structure around the detection threshold of polyethylene terephthalate by infrared spectrum and etching test 千葉 昌寛
    Akihiro Chiba, Tamon Kusumoto, Takuya Otani, Morikazu Sakai, Masato Kanasaki, Oda Keiji, Satoshi Kodaira, YAMAUCHI TOMOYA
    33rd Workshop on Solid State Nuclear Track Detectors, Mar. 2019, English, Nagoya University, Domestic conference
    Oral presentation

  • Areal distribution dependence of radiation damage in Bisphenol A Polycarbonate thin films caused by heavy ions
    Ken Hamano, Tamon Kusumoto, Kazuki Azuma, Takuya Otani, Morikazu Sakai, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, YAMAUCHI TOMOYA
    33rd Workshop on Solid State Nuclear Track Detectors, Mar. 2019, Japanese, Nagoya University, Domestic conference
    Oral presentation

  • Areal distribution of radiation damage in Bisphenol A Polycarbonated films caused by heavy ions
    Ken Hamano, Tamon Kusumoto, Kazuki Azuma, Takuya Otani, Morikazu Sakai, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, YAMAUCHI TOMOYA
    The 66th JSAP Spring Meeting, 2019, Mar. 2019, Japanese, Tokyo Institute of Technology, Ookayama Campus, 固体飛跡検出器の一つであるビスフェノール A ポリカーボネート(以下 PC)に関して、 これまでに重イオンやガンマ線など様々な放射線を用いた照射実験が行われてきた。これ らの照射前後の有機高分子の構造を調べる手段として赤外顕微鏡(以下 IRT)を用いた。図 1 に顕微赤外法を用いて PC における C=O 基の吸光度をマッピング測定した結果を示す。 表示している領域は 4000×4000 μm2 である。図から吸光度すなわち面密度にストライプパ ターンが存在することが確認できる。本研究では単位面積あたりの各官能基のモル数を面 密度とし、それをパラメータにしてイオントラック生成に及ぼす面密度の影響を評価し た。, Domestic conference
    Oral presentation

  • Precise measurement of laser-accelerated protons using CR-39 track detectors
    Keita Sakamoto, Masato Kanasaki, Kousaku Morii, Satoshi Jinno, Satoshi Kodaira, Yamauchi Tomoya, Keiji Oda, Yuji Fukuda
    The 66th JSAP Spring Meeting, 2018, Mar. 2019, Japanese, Tokyo Institute of Technology, Ookayama Campus, Domestic conference
    Oral presentation

  • 固体飛跡検出器CR-39を用いたレーザー加速陽子線エネルギースペクトルの高精度計測
    Keita Sakamoto, Masato Kanasaki, Kousaku Morii, Satoshi Jinno, Satoshi Kodaira, Yamauchi Tomoya, Keiji Oda, Yuji Fukuda
    33th Workshop on Solid State Nuclear Track Detectors, Mar. 2019, Japanese, Nagoya University, Domestic conference
    Oral presentation

  • Development of the measurement method for laser-accelerated 100 MeV-class protons using nuclear emulsions
    Asai Takafumi, Masato Kanasaki, Kunihiro Morishima, Satoshi Jinno, Satoshi Kodaira, Nobumichi Shutoh, Keiji Oda, Tomoya Yamauchi, Hiromitsu Kiriyama, Yuji Fukuda
    The 66th JSAP Spring Meeting, 2019, Mar. 2019, Japanese, Tokyo Institute of Technology, Ookayama Campus, Domestic conference
    Oral presentation

  • 原子核乾板を用いた100 MeV級レーザー加速プロトン計測手法の開発
    Asai Takafumi, Masato Kanasaki, Kunihiro Morishima, Satoshi Jinno, Satoshi Kodaira, Nobumichi Shutoh, Keiji Oda, Tomoya Yamauchi, Hiromitsu Kiriyama, Yuji Fukuda
    33th Workshop on Solid State Nuclear Track Detectors, Mar. 2019, Japanese, Nagoya University, Domestic conference
    Oral presentation

  • A study on latent track structure in polyethylene terephthalate around the detection threshold
    Akihiro Chiba, Tamon Kusumoto, Kazuki Azuma, Takuya Otani, Morikazu Sakai, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, YAMAUCHI TOMOYA
    The 66th JAPS Spring Meeting, 2019, Mar. 2019, Japanese, Tokyo Institute of Technology, Ookayama Campus, ポリエチレンテレフタレート(PET)の検出閾値は製造法などによって一定の幅で変化することで知られ ている。その閾値を制御することができれば、放射線混成場において任意の重イオンを選択的に検出す る新たな固体飛跡検出器の開発につながると考える。本研究は PET の閾値を決定する潜在イオントラッ ク構造の変化を詳細に解析することを目的としている。先行する研究から PET の各官能基の放射線化学 収率(G 値)と阻止能の関係には明確なステップがあることがわかっている[1]。このステップ状の変化は PET の検出閾値と密接に関係していると考えられる。本研究では G 値のステップ近傍での損傷構造を解 明すべく、2.5μm の PET 薄膜のスタックに B-11 イオンの照射を行い、照射前後の赤外線吸収スペクトル を求め、G 値の評価を行った。また同素材で 13μ, Domestic conference
    Oral presentation

  • Characterization of real-time Thomson Parabola Spectrometer for laser-driven ion acceleration experiments
    Kazuki Shimizu, Masato Kanasaki, Satoshi Jinno, Takafumi Asai, Keita Sakamoto, Keiji Oda, Tomoya Yamauchi, Yuichi Furuyama, Akira Taniike, Yuji Fukuda
    The 66th JSAP Spring Meeting, 2019, Mar. 2019, Japanese, Tokyo Institute of Technology, Ookayama Campus, Domestic conference
    Oral presentation

  • レーザー加速イオン計測用リアルタイムトムソンパラボラスペクトロメータの校正
    Kazuki Shimizu, Masato Kanasaki, Satoshi Jinno, Takafumi Asai, Keita Sakamoto, Keiji Oda, Tomoya Yamauchi, Yuichi Furuyama, Akira Taniike, Yuji Fukuda
    33th Workshop on Solid State Nuclear Track Detectors, Mar. 2019, Japanese, Nagoya University, Domestic conference
    Oral presentation

  • Remarkable difference in radio-sensitivity of carbonyl bonds in polycaprolactam and poly(hexamethylene adipamide) under ion irradiations
    Morikazu Sakai, Akihiro Chiba, Ken Hamano, Tamon Kusumoto, Satoshi Kodaira, Masato Kanasaki, Keiji Oda, YAMAUCHI TOMOYA
    The 66th JAPS Spring Meeting, 2019, Mar. 2019, Japanese, Tokyo Institute of Technology, Ookayama Campus, 高分子系固体飛跡検出器であるポリアリルジグリコールカーボネート(PADC)やポリエチレン テレフタレート(PET)、ビスフェノール A ポリカーボネート(PC)中に形成されるイオントラ ックについての系統的な研究が行われている。イオントラックの構造分析の手法としては主に赤 外分光分析が用いられており[1]、先行する研究ではその手法により、ポリカプロラクタム(ナイ ロン6)に水素イオンを照射した際の吸光度変化および化学的損傷パラメータを求めている[2]。 本研究ではアミド基を含む高分子であるポリテトラメチレンアジパミド(ナイロン4,6)とポ リヘキサメチレンアジパミド(ナイロン6,6)に C イオンを照射した際の吸光度変化と化学的損 傷パラメータを求めた。Fig.1 に未照射ナイロン6,6薄膜の赤外線吸収スペクトルを示す。実験で は Goodfello, Domestic conference
    Oral presentation

  • Response of polyamide films agains heavy ions including U ions
    YAMAUCHI TOMOYA, Tamon Kusumoto, Morikazu Sakai, Atsushi Yoshida, Tadashi Kambara, Satoshi Kodaira, Masato Kanasaki, Keiji Oda, Koji Kuraoka, Remi Barillon
    33rd Workshop on Solid State Nuclear Track Detectors, Mar. 2019, English, Nagoya University, Domestic conference
    Oral presentation

  • Response of PADC detectors as a function of the yield of hydroxyl group
    YAMAUCHI TOMOYA, Tamon Kusumoto, Kazuki Azuma, Satoshi Kodaira, Masato Kanasaki, Keiji Oda, Koji KUraoka, Remi Barillon
    33rd Workshop on Solid State Nuclear Track Detectors, Mar. 2019, Japanese, Nagoya University, Domestic conference
    Oral presentation

  • PADC飛跡検出器の検出閾値を表す指標としてのイオントラック内径方向電子フルエンス
    YAMAUCHI TOMOYA
    大阪大学産業科学研究所附属量子ビーム研究施設平成３０年度成果報告会, Mar. 2019, Japanese, 大阪大学産業科学研究所, Domestic conference
    Oral presentation

  • Structural analysis along nuclear tracks and characterization for etching in poly(allyl diglicol carbonate) detectors
    Tomoki Okada, Kazuki Azuma, Takuya Otani, Morikazu Sakai, Akihiro Chiba, Ken Hamano, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Tamon Kusumoto, YAMAUCHI TOMOYA
    33rd Workshop on Solid State Nuclear Track Detectors, Mar. 2019, Japanese, Nagoya University, Domestic conference
    Oral presentation

  • An evaluation of damage in PADC detector exposed to gamma rays using ESR method (2)
    Takuya Otanni, Akihiro Chiba, Ken Hamano, Masato Kanasaki, Keiji Oda, Kazuo Kobayashi, Yoshihide Honda, Sachiko Tojo, YAMAUCHI TOMOYA
    The 66th JAPS Spring Meeting, 2019, Mar. 2019, Japanese, Tokyo Institute of Technology, Ookayama Campus, ポリアリルジグリコールカーボネート(PADC)は最も感度の高いエッチング型飛跡検出 器として知られている。近年、PADC 内の潜在飛跡形成機構の解明のための研究が体系的に 進められており、エーテル基が最も損傷を受けやすいこと、新たな端点としてヒドロキシル 基が生成されることなどが明らかにされた。また、赤外分光法を用いた研究において PADC にガンマ線を照射すると 60 kGy 程度の低線量域まではエーテル基のみが損傷を受け、60 kGy 以降の線量ではじめてカーボネートエステルの損傷が始まることを確認できた[1]。こ のカーボネートエステルが損傷する吸収線量を「臨界線量」と定義した。この段階的な損傷 過程をラジカルの生成と消滅との関係で理解するために電子スピン共鳴分光法(ESR)を適 用し分析を行った。ESR 法において PADC に液体窒素温度下, Domestic conference
    Oral presentation

  • CR-39を用いた水素クラスターターゲットから発生するレーザー加速陽子線の計測
    KANASAKI MASATO, MORII KOHSAKU, SAKAMOTO KEITA, TAKANO YUTA, ASAI TAKAFUMI, SHIMIZU KAZUKI, YAMAUCHI TOMOYA, ODA KEIJI, JINNO SATOSHI, FUKUDA YUJI
    33th Workshop on Solid State Nuclear Track Detectors, Mar. 2019, Japanese, Nagoya University, Domestic conference
    Oral presentation

  • リアルタイムトムソンパラボラスペクトロメータの校正
    SHIMIZU KAZUKI, JINNO SATOSHI, KANASAKI MASATO, TANIIKE AKIRA, FURUYAMA YUICHI, ODA KEIJI, YAMAUCHI TOMOYA, FUKUDA YUJI
    神戸大学若手フロンティア研究会, Dec. 2018, Japanese, 神戸大学百年記念館, Domestic conference
    Poster presentation

  • Measurement of laser-accelerated MeV-class protons from hydrogen clusters using CR-39 track detectors
    Kousaku Morii, Masato Kanasaki, Satoshi Jinno, Yuta Takano, Takafumi Asai, Keita Sakamoto, Kazuki Shimizu, YAMAUCHI TOMOYA, Keiji Oda, Yuji Fukuda
    The 14th International Workshop on Ionizing Radiation Monitoring, Dec. 2018, English, Chiyoda Technol Corporation, Oarai Research Center, International conference
    Poster presentation

  • Development of the passive energy spectrometer for laser-accelerated protons
    Keita Sakamoto, Takafumi Asai, Satoshi Jinno, Yuji Fukuda, YAMAUCHI TOMOYA, Keiji Oda, Satoshi Kodaira, Masato Kanasaki
    The 14th International Workshop on Ionizing Radiation Monitoring, Dec. 2018, English, Chiyoda Technol Corporation, Oarai Research Center, International conference
    Poster presentation

  • Characterization of laser-accelerated protons from micron-sized hydrogen cluster targets using track detectors
    Masato Kanasaki, Satoshi Jinno, Kunihiro Morishima, Satoshi Kodaira, Yuta Takano, Kousaku Morii, Takafumi Asai, Keita Sakamoto, Kazuki Shimizu, Keiji Oda, YAMAUCHI TOMOYA, Hiromitsu Kiriyama, Yuji Fukuda
    The 14th International Workshop on Ionizing Radiation Monitoring, Dec. 2018, English, Chiyoda Technol Corporation, Oarai Research Center, International conference
    Poster presentation

  • Characterization of hydrogen clusters for laser-driven proton acceleration by optical microscope
    Yuta Takano, Masato Kanasaki, Satoshi Jinno, Masataka Uno, Tomoya Yamauchi, Keiji Oda, Yuji Fukuda
    The 14th International Workshop on Ionizing Radiation Monitoring, Dec. 2018, English, Chiyoda Technol Corporation, Oarai Research Center, International conference
    Poster presentation

  • A study on latent track structure in polyethylene terephthalate around the detection threshold
    Akihiro Chiba, Tamon Kusumoto, Kazuki Azuma, Takuya Otani, Morikazu Sakai, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, YAMAUCHI TOMOYA
    The 14th International Workshop on Ionizing Radiation Monitoring, Dec. 2018, English, Chiyoda Technol Corporation, Oarai Research Center, International conference
    Poster presentation

  • Areal distribution of radiation damage in bisphenol A polycarbonate films caused by heavy ions
    Ken Hamano, Tamon Kusumoto, Kazuki Azuma, Takuya Otani, Morikazu Sakai, Masato Kanasaki, Keiji Oda, YAMAUCHI TOMOYA
    The 14th International Workshop on Ionizing Radiation Monitoring, Dec. 2018, English, Chiyoda Technol Corporation, Oarai Research Center, International conference
    Poster presentation

  • Application of a nuclear emulsion to laser-driven ion acceleration experiment using micron-sized hydrogen cluster target
    Takafumi Asai, Masato Kanasaki, Satoshi Jinno, Nobumichi Shutoh, YAMAUCHI TOMOYA, Keiji Oda, Kunihiro Morishima, Yuji Fukuda
    The 14th International Workshop on Ionizing Radiation Monitoring, Dec. 2018, English, Chiyoda Technol Corporation, Oarai Research Center, International conference
    Poster presentation

  • A calibration study of a real-time Thomson parabola spectrometer using tandem accelerator
    Kazuki Shimizu, Masato Kanasaki, Satoshi Jinno, Yuta Takano, Kousaku Morii, Takafumi Asai, Keita Sakamoto, Keiji Oda, YAMAUCHI TOMOYA, Yuichi Furuyama, Akira Taniike, Hiromitsu Kiriyama, Yuji Fukuda
    The 14th International Workshop on Ionizing Radiation Monitoring, Dec. 2018, English, Chiyoda Technol Corporation, Oarai Research Center, International conference
    Poster presentation

  • Observation of micron-sized hydrogen clusters for the target of laser-driven proton acceleration by optical microscope
    Yuta Takano, Masato Kanasaki, Satoshi Jinno, Masataka Uno, Tomoya Yamauchi, Keiji Oda, Yuji Fukuda
    The 2nd QST International Symposium, Nov. 2018, English, Nara Kasugano International Forum, International conference
    Poster presentation

  • Measurement of laser-accelerated MeV-class protons using CR-39 track detectors
    Kousaku Morii, Masato Kanasaki, Satoshi Jinno, Yuta Takano, Takafumi Asai, Keita Sakamoto, Kazuki Shimizu, YAMAUCHI TOMOYA, Keiji Oda, Yuji Fukuda
    The 2nd QST International Symposium, Nov. 2018, English, Nara Kasugano International Forum, International conference
    Poster presentation

  • Excess of Childhood Thyroid Cancer Indicates UNSCEAR 2016 White Paper is Out of Science
    YAMAUCHI TOMOYA
    The International Workshop “Radiation Diplomacy”: The History and the Present, Nov. 2018, English, Institute for research in Humanities, Kyoto University, Reporting to the General Assembly, the United Nations Scientific Committee on the Effects of Atomic Radiation, UNSCEAR, was set up in 1955. After the Partial Nuclear Test Ban Treaty, the dominant sources of artificial radiation have been the nuclear facilities, especially after some of their catastrophic explosions. Six years after the Chernobyl accident (1986), childhood thyro, International conference
    Oral presentation

  • Energy measurement of laser-accelerated protons by using a nuclear emulsion
    Takafumi Asai, Masato Kanasaki, Satoshi Jinno, Nobumichi Shutoh, YAMAUCHI TOMOYA, Keiji Oda, Kunihiro Morishima, Yuji Fukuda
    The 2nd QST International Symposium, Nov. 2018, English, Nara Kasugano International Forum, International conference
    Poster presentation

  • Development of the passive energy spectrometer using CR-39 track detector
    Keita Sakamoto, Takafumi Asai, Satoshi Jinno, Yuji Fukuda, YAMAUCHI TOMOYA, Keiji Oda, Satoshi Kodaira, Masato Kanasaki
    The 2nd QST International Symposium, Nov. 2018, English, Nara Kasugano International Forum, International conference
    Poster presentation

  • A calibration study of a real-time Thomson parabola system by using tandem accelerator
    Kazuki Shimizu, Satoshi Jinno, Yuta Takano, Kousaku Morii, Takafumi Asai, Keita Sakamoto, Keiji Oda, YAMAUCHI TOMOYA, Yuichi Furuyama, Akira Taniike, Hiromitsu Kiriyama, Yuji Fukuda, Masato Kanasaki
    The 2nd QST International Symposium, Nov. 2018, English, Nara Kasugano International Forum, International conference
    Poster presentation

  • 東電福島原発事故後の小児甲状腺がんに関する評価の問題点（2）検査結果の分析
    Toshihide Tsuda, YAMAUCHI TOMOYA, Yasushi Kakihara, Yoshiyuki Segawa
    第77回日本公衆衛生学会総会, Oct. 2018, Japanese, ビッグパレットふくしま, 【目的】2011年3月の東京電力福島原子力発電所事故の半年後より、福島県は、事故当時18歳以下であった住民を対象として、甲状腺検査を行ってきた。第1巡目（先行検査）は2011年10月から2014年3月、第2巡目は2014年4月から2016年3月、第3巡目は2016年4月から2018年3月に実施している。 WHOが原発事故によるがんの多発を予測し、すでに専門国際誌に学術論文（Tsuda et al. Epidemiology 2016;27: 316-322）で甲状腺がんの多発が示され国際学会から書簡が寄せられても原発事故と小児甲状腺がん多発の因果関係判断を先延ばしにされ、何らの対策もないまま時間の浪費をしている福島県の検討委員会の問題点を指摘する。【方法】「因果関係がある」とは、確率上昇、発生率あるいは有病割合の上昇を観察した時に言う。因果関係につい, Domestic conference
    Poster presentation

  • 東電福島原発事故後の小児甲状腺がんに関する評価の問題点（1）－UNSCEAR2016白書の検討－
    YAMAUCHI TOMOYA, Yasushi Kakihara, Yoshiyuki Segawa, Toshihide Tsuda
    第77回日本公衆衛生学会総会, Oct. 2018, Japanese, ビッグパレットふくしま, 【目的】1955年の国連総会において設立された原子放射線の影響に関する国連科学委員会（UNSCEAR）は、電離放射線への被ばくのレベルと影響を評価し報告している。各国政府や国際放射線防護委員会（ICRPを）含む諸機関によって、放射線リスクを評価し防護対策を確立するための科学的な基礎としてUNSCEARの評価は利用されている。 東京電力福島原子力発電所事故後にもUNSCEAR2013報告書を公刊し、小児甲状腺がんの多発については「福島第一原発事故後の甲状腺吸収線量がチェルノブイリ事故後の線量よりも大幅に 低いため、福島県でチェルノブイリ原発事故の時のように多数の放射線誘発性甲状腺がんが発生するというように考える必要はない。」（222節）としている。これは環境省の専門家会議や日本学術会議の報告、福島県の県民健康調査検討委員会での議論にも反映している。本, Domestic conference
    Poster presentation

  • Mesurement of laser-accelerated MeV-class protons from hydrogen clusters using CR-39 track detectors
    MORII KOHSAKU, SAKAMOTO KEITA, ASAI TAKAFUMI, SHIMIZU KAZUKI, UNO MASATAKA, YAMAUCHI TOMOYA, ODA KEIJI, JINNO SATOSHI, KIRIYAMA HIROMITSU, FUKUDA YUJI, KANASAKI MASATO
    The 79th JSAP Autumn Meeting, Sep. 2018, Japanese, Nagoya Congress Center, Domestic conference
    Poster presentation

  • Measurement of laser-accelerated protons using nuclear emulsion
    ASAI TAKAFUMI, MORISHIMA KUNIHIRO, UNO MASATAKA, TAKANO YUTA, MORII KOHSAKU, SAKAMOTO KEITA, SHIMIZU KAZUKI, JINNO SATOSHI, KODAIRA SATOSHI, Shutoh Nobumichi, ODA KEIJI, YAMAUCHI TOMOYA, FUKUDA YUJI, KIRIYAMA HIROMITSU, KANASAKI MASATO
    The 79th JSAP Autumn Meeting, Sep. 2018, Japanese, Nagoya Congress Center, Domestic conference
    Poster presentation

  • 検出閾値周辺におけるポリエチレンテレフタレート中イオントラック構造の研究
    Masahiro Chiba, Tamon Kusumoto, Kazuki Azuma, Takuya Otani, Morikazu Sakai, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, YAMAUCHI TOMOYA
    The 79th JSAP Autumn Meeting, 2018, Sep. 2018, Japanese, Nagoya Congress Center, ポリエチレンテレフタレート(PET)検出器の検出閾値は製造法などによって一定の幅で変化することで知られている。その閾値を制御することができれば、放射線混成場において任意の重イオンを選択的に検出する新たな固体飛跡検出器の開発につながると考える。本研究では、先行する研究から明らかになった放射線化学収率(G値)のステップ近傍での損傷構造を解明すべくPET薄膜のスタックにB-11イオンの照射を行い、G値の評価を行った。, Domestic conference
    Oral presentation

  • Characterization of hydrogen clusters for laser-driven proton acceleration by optical microscope
    TAKANO YUTA, KANASAKI MASATO, JINNO SATOSHI, UNO MASATAKA, YAMAUCHI TOMOYA, ODA KEIJI, FUKUDA YUJI
    The 79th JSAP Autumn Meeting, Sep. 2018, Japanese, Nagoya Congress Center, Domestic conference
    Poster presentation

  • Development of the passive energy spectrometer for laser-accelerated protons
    SAKAMOTO KEITA, UNO MASATAKA, ASAI TAKAFUMI, JINNO SATOSHI, FUKUDA YUJI, YAMAUCHI TOMOYA, ODA KEIJI, KODAIRA SATOSHI, KANASAKI MASATO
    The 79th JSAP Autumn Meeting, Sep. 2018, Japanese, Nagoya Congress Center, Domestic conference
    Poster presentation

  • ホウ素イオンを照射したポリカーボネート薄膜中放射線損傷の面分布
    Ken Hamano, Tamon Kusumoto, Kazuki Azuma, Takuya, Otani, Morikazu Sakai, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, YAMAUCHI TOMOYA
    The 79th JSAP Autumn Meeting, 2018, Sep. 2018, Japanese, Nagoya Congress Center, Domestic conference
    Oral presentation

  • A calibration study of real-time Thomson parabola spectrometer using tandem accelerator
    SHIMIZU KAZUKI, JINNO SATOSHI, UNO MASATAKA, TAKANO YUTA, MORII KOHSAKU, ASAI TAKAFUMI, SAKAMOTO KEITA, ODA KEIJI, YAMAUCHI TOMOYA, FURUYAMA YUICHI, TANIIKE AKIRA, FUKUDA YUJI, KIRIYAMA HIROMITSU, KANASAKI MASATO
    The 79th JSAP Autumn Meeting, Sep. 2018, Japanese, Nagoya Congress Center, Domestic conference
    Poster presentation

  • イオントラックに沿ったヒドロキシル基密度によるPADC飛跡検出器の応答特性
    Kazuki Azuma, Tamon Kusumoto, Masahiro Chiba, Ken Hamano, Masato Kanasaki, Keiji Oda, Stoshi Kodaira, YAMAUCHI TOMOYA
    The 79th JSAP Autumn Meeting, 2018, Sep. 2018, Japanese, Nagoya Congress Center, Domestic conference
    Oral presentation

  • FT-IRを用いたナイロン６の水素イオン照射による吸光度変化と化学的損傷パラメータ
    Morikazu Sakai, Tamon Kusumoto, Satoshi Kodaira, Masahiro Chiba, Ken Hamano, Masato Kanasaki, Keiji Oda, YAMAUCHI TOMOYA
    The 79th JSAP Autumn Meeting, 2018, Sep. 2018, Japanese, Nagoya Congress Center, ナイロン６（ポリアミド）という高分子材料に焦点を当て赤外分光分析を用いて水素イオン照射前後の吸光度変化や化学的損傷パラメータについての考察を行った。ナイロン６は繰り返し構造内にアミド基を有している。一方、人体に多く含まれるたんぱく質にもペプチド結合と呼ばれるアミド基が存在することからアミド基の放射線感受性を調べることは重要であると言える。, Domestic conference
    Oral presentation

  • ESR 法を用いたガンマ線照射による PADC 検出器中の損傷評価
    Takuya Otani, Tamon Kusumoto, Masato Kanasaki, Keiji Oda, Kazuo Kobayashi, Yoshihide Honda, Sachiko Tojo, YAMAUCHI TOMOYA
    The 79th JSAP Autumn Meeting, 2018, Sep. 2018, Japanese, Nagoya Congress Center, ポリアリルジグリコールカーボネート（PADC）検出器は最も感度の高いエッチング型の飛跡検出器として知られている。これまでの研究においてPADCにガンマ線を照射すると60 kGyの臨界線量を超ええた領域でのみ、カーボネートエステルとCH基が損傷することが赤外分光法と電子スピン共鳴分光法（ESR）により明らかになった。電子スピン共鳴分光法で得られた、臨界線量前後でのスペクトルが異なることから、これらのラジカルの特定を目的とし、PADCに似た構造を持つモノマーを用いて、損傷評価を行う。, Domestic conference
    Oral presentation

  • Drastic decrease of carbonyl group following the loss of ether in PADC exposed to 222 nm UV photons
    Tamon Kusumoto, Yutaka Mori, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Remi Barillon, YAMAUCHI TOMOYA
    The 13th meeting of the “Ionizing Radiation and Polymers” symposium, Aug. 2018, English, Moscow, International conference
    Oral presentation

  • An up-to-date local dose distribution theory for describing the track registration property of Kapton film irradiated with heavy ions, including U ion
    Tamon Kusumoto, Morikazu Sakai, A.Yoshida, T. Kambara, Y. Yanagisawa, Satoshi Kodaira, Keiji Oda, Remi Barillon, YAMAUCHI TOMOYA
    10th International symposium on Swift Heavy Ions in Matter and 28th International Conference on Atomic Collisions in Solids, Jul. 2018, English, Caen, France, International conference
    Poster presentation

  • Excess of Childhood Thyroid Cancer Indicates UNSCEAR 2016 White Paper is Out of Science.
    YAMAUCHI TOMOYA
    日本科学史学会第65回年会 シンポジウムS4（公開）, May 2018, Japanese, Tokyo University of Science, Domestic conference
    Nominated symposium

  • Characterization of laser-accelerated protons using track detectors
    KANASAKI MASATO, JINNO SATOSHI, MORISHIMA KUNIHIRO, KODAIRA SATOSHI, UNO MASATAKA, TAKANO YUTA, MORII KOHSAKU, ASAI TAKAFUMI, SAKAMOTO KEITA, SHIMIZU KAZUKI, ODA KEIJI, YAMAUCHI TOMOYA, KIRIYAMA HIROMITSU, FUKUDA YUJI
    Opto 2018 Symposium on Photon and Beam Science, May 2018, Japanese, Multi-purpose hall(KPSI), Domestic conference
    Poster presentation

  • 水素クラスターサイズ計測用光学顕微鏡の開発
    TAKANO YUTA, KANASAKI MASATO, JINNO SATOSHI, UNO MASATAKA, YAMAUCHI TOMOYA, ODA KEIJI, FUKUDA YUJI
    Opto 2018 Symposium on Photon and Beam Science, May 2018, Japanese, Multi-purpose hall(KPSI), Domestic conference
    Poster presentation

  • 固体飛跡検出器CR-39を用いた水素クラスターのクーロン爆発によるMeV級陽子線のエネルギースペクトル計測
    MORII KOHSAKU, UNO MASATAKA, ASAI TAKAFUMI, SAKAMOTO KEITA, SHIMIZU KAZUKI, ODA KEIJI, YAMAUCHI TOMOYA, FUKUDA YUJI, JINNO SATOSHI, KANASAKI MASATO
    Opto 2018 Symposium on Photon and Beam Science, May 2018, Japanese, Multi-purpose hall(KPSI), Domestic conference
    Poster presentation

  • 固体飛跡検出器CR-39を用いた レーザー加速陽子線用エネルギースペクトロメータの開発
    SAKAMOTO KEITA, UNO MASATAKA, ASAI TAKAFUMI, JINNO SATOSHI, FUKUDA YUJI, YAMAUCHI TOMOYA, ODA KEIJI, KODAIRA SATOSHI, KANASAKI MASATO
    Opto 2018 Symposium on Photon and Beam Science, May 2018, Japanese, Multi-purpose hall(KPSI), Domestic conference
    Poster presentation

  • レーザー加速イオン計測における原子核乾板の適用可能性の検討
    ASAI TAKAFUMI, MORISHIMA KUNIHIRO, UNO MASATAKA, TAKANO YUTA, MORII KOHSAKU, SAKAMOTO KEITA, SHIMIZU KAZUKI, JINNO SATOSHI, KODAIRA SATOSHI, Shutoh Nobumichi, ODA KEIJI, YAMAUCHI TOMOYA, FUKUDA YUJI, KANASAKI MASATO
    Opto 2018 Symposium on Photon and Beam Science, May 2018, Japanese, Multi-purpose hall(KPSI), Domestic conference
    Poster presentation

  • A calibration study of real-time Thomson parabola system
    SHIMIZU KAZUKI, JINNO SATOSHI, UNO MASATAKA, TAKANO YUTA, MORII KOHSAKU, ASAI TAKAFUMI, SAKAMOTO KEITA, ODA KEIJI, YAMAUCHI TOMOYA, FURUYAMA YUICHI, TANIIKE AKIRA, FUKUDA YUJI, KANASAKI MASATO
    Opto 2018 Symposium on Photon and Beam Science, May 2018, Japanese, Multi-purpose hall(KPSI), Domestic conference
    Poster presentation

  • Chemical criterion for the detection thresholds of etched nuclear track detectors
    YAMAUCHI TOMOYA
    平成29年度HIMAC共同利用研究成果発表会, Apr. 2018, Japanese, ホテルポートプラザちば, For typical polymeric etched track detectors of PET, PC, PI and PADC, chemical damage parameters of damage density (the amount of loss of considered functional groups per unit length of tracks), effective track core radius (the considered chemical groups are lost with that radius) and the radiation chemical yields, G values, for each group are evaluated, as a function of the st, Domestic conference
    Oral presentation

  • 赤外分光分析を用いたナイロン 6 のプロトン照射による吸光度変化と化学的 損傷パラメータ
    Morikazu Saakai, Tamon Kusumoto, Yoshitaka Terashita, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, YAMAUCHI TOMOYA
    32nd Workshop on Solid State Nuclear Track Detectors, Mar. 2018, Japanese, National Institutes for Quantum and Radiological Science and Technology, QST, Kansai Photon Science Institute, Domestic conference
    Oral presentation

  • 高感度飛跡検出器 PADC の閾値に対する新しい物理概念としてのイオントラック内径方向電子フルエンス
    Tamon Kusumoto, Ziad EL Bitar, Shogo Okada, Pierre Gillet, Nicolas Arbor, Yutaka Mori, Masato Kanasaki, Keiji Oda, Abdel-Mjid Nourreddine, Hisaya Kurashige, Michel Fromm, Pierre Cloutier, Andrew D Bass, Léon Sanche, Satoshi Kodaira, Remi Barillon, YAMAUCHI TOMOYA
    32nd Workshop on Solid State Nuclear Track Detectors, Mar. 2018, Japanese, National Institutes for Quantum and Radiological Science and Technology, QST, Kansai Photon Science Institute, Domestic conference
    [Invited]
    Invited oral presentation

  • 検出閾値周辺におけるポリエチレンテレフタレート中イオントラック構造の研究
    Masahiro Chiba, Tamon Kusumoto, Yoshitaka Terashita, Kazuki Azuma, Takuya Otani, Morikazu Sakai, Keiji Oda, Masato Kanasaki, Satoshi Kodaira, YAMAUCHI TOMOYA
    32nd Workshop on Solid State Nuclear Track Detectors, Mar. 2018, Japanese, National Institutes for Quantum and Radiological Science and Technology, QST, Kansai Photon Science Institute, Domestic conference
    Oral presentation

  • An up-to-date radial dose distribution theory for ion tracks and its applications to detection thresholds of PET detectors
    Morikazu Sakai, Tamon Kusumoto, Yoshitaka Terashita, Masato Kanasaki, Keiji Oda, YAMAUCHI TOMOYA
    The 65th JSAP Spring Meeting 2018, Mar. 2018, Japanese, Waseda University, 炭素イオンまでの比較的軽いイオンでは相対速度が 1%以上の領域で両者 の式から得られる実効電荷に差はなく、鉄イオンより重いイオンでは相対速度が 1%から 30%の領 域で Schiwietz らの実効電荷が Heckman の実効電荷を上回ることがわかった。さらに検出閾値に おける線量分布を計算し、イオントラック形成機構に関する考察を行った。その結果、局所線量が増加するほど感度も増加することがわかり、局所線量が大きくなるとイオントラック により深い損傷を与えると考えられる。また PET 検出器閾値での Geant4-DNA シミュレーションの 結果も発表したいと考えている。, Domestic conference
    Oral presentation

  • ポリアリルジグリコールカーボネート中メチン基に着目したイオントラック構造分析
    Yoshitaka Terashita, Tamon Kusumoto, Keiji Oda, Masato Kanasaki, Satoshi Kodaira, YAMAUCHI TOMOYA
    32nd Workshop on Solid State Nuclear Track Detectors, Mar. 2018, Japanese, National Institutes for Quantum and Radiological Science and Technology, QST, Kansai Photon Science Institute, Domestic conference
    Oral presentation

  • ホウ素イオンを照射したポリカーボネート薄膜中放射線損傷の面分布
    Ken Hamano, Tamon Kusumoto, Yoshitaka Terashita, Kazuki Azuma, Takuya Otani, Morikazu Sakai, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, YAMAUCHI TOMOYA
    32nd Workshop on Solid State Nuclear Track Detectors, Mar. 2018, Japanese, National Institutes for Quantum and Radiological Science and Technology, QST, Kansai Photon Science Institute, Domestic conference
    Oral presentation

  • イオントラックに沿ったヒドロキシル基密度による PADC 飛跡検出器の応答特性の記 述
    Kazuki Azuma, Tamon Kusumoto, Yoshitaka Terashita, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, YAMAUCHI TOMOYA
    32nd Workshop on Solid State Nuclear Track Detectors, Mar. 2018, Japanese, National Institutes for Quantum and Radiological Science and Technology, QST, Kansai Photon Science Institute, Domestic conference
    Oral presentation

  • Response of PADC track detectors expressed by the linear density of hydroxyl group along ion tracks
    Kazuki Azuma, Tamon Kusumoto, Yoshitaka Terashita, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, YAMAUCHI TOMOYA
    The 65th JSAP Spring Meeting 2018, Mar. 2018, Japanese, Waseda University, 確認するべき一つの課題は、水のヒドロキシル基のモル吸光係数と高分子中の新しい端点に なっているヒドロキシル基のそれが同一であると考えてよいかどうかというものである。本研 究ではカール・フィッシャー電量適定法と赤外分光法を用いて、高分子中にヒドロキシル基を 有するポリビニルアルコール(PVA)を用いてそのモル吸光係数を求めた。市販のPVA薄膜の厚 さは最も薄いものでも 10 μm を超えており、ヒドロキシル基伸縮のピークは飽和してしまい、 定量的な評価はできなかった。自作のPVA薄膜の赤外線スペクトルを図2に示す。膜厚はおよ そ 5 μm であった。可能な限り脱気した状態で赤外線スペクトルを求め、水が含まれていない と仮定してモル吸光係数を求めたところ、1.2x104 M-1cm-1という値が得られている。講演では 薄膜に含まれている水分量を補正したモ, Domestic conference
    Oral presentation

  • Analyses of ion tracks in PADC detectors on the FT-IR peak of methine group
    Yoshitaka Terashita, Tamon Kusumoto, Keiji Oda, Masato Kanasaki, Yutaka Mori, Satoshi Kodaira, YAMAUCHI TOMOYA
    The 65th JSAP Spring Meeting 2018, Mar. 2018, Japanese, Waseda University, 本研究では厚さ3 μm以下にした薄膜PADC(フクビ化学社製、BARYOTRAK)に対し、放射 線医学総合研究所内の HIMAC の中エネルギービーム照射室でプロトン、C イオン、Kr イオン、 Xe イオンの照射及びサイクロトロン棟の汎用照射室で He イオンの照射を行った。また、ガンマ 線照射については大阪大学産業科学研究所附属の量子ビーム科学研究施設の Co-60 で行った。な お、分析には日本分光社製の真空密閉タイプの FT/IR-6100S を使用し、官能基ごとに照射前後の 赤外吸収スペクトルの吸光度を測定した。一例として、図 1 にメチン基(2920 cm-1)付近に着目 した線量の異なる Kr イオン照射前後の差スペクトルと赤外吸収スペクトルを示しており、縦軸 が吸光度、横軸が波数の関係となっている。結果から、照射線量が増えると吸光度の, Domestic conference
    Oral presentation

  • Dual stage formation process of damage of ion track in PADC detectors
    Takuya Otani, Tamon Kusumoto, Yoshitaka Terashita, Masato Kanasaki, Keiji Oda, Kazuo Kobayashi, Yoshihide Honda, Sachiko Tojo, YAMAUCHI TOMOYA
    The 65th JSAP Spring Meeting 2018, Mar. 2018, Japanese, Waseda University, 官能基の定性的・定量的分析 には赤外線分光法を利用したが、この段階的な損傷過程をラジカルの生成と消滅との関係 で理解するために電子スピン共鳴分光法(ESR)を新たに適用した。ESR の結果からエーテ ル基のみが損傷している状態とエーテル基に加えカーボネートエステルが損傷している状 態を評価するため実験を行った。Fig 2 は室温下で低線量(33 kGy)と高線量(100 kG)でガンマ 線を照射したスペクトルである。この結果において低線量と高線量のスペクトルが明らか に異なることから生成されたラジカルの種類が異なることが確認できた。, Domestic conference
    Oral presentation

  • A new physical criterion of Radial Electron Fluence around Ion Tracks for the detection threshold of PADC detector
    Tamon Kusumoto, Ziad EL Bitar, Shogo Okada, Pierre Gillet, Nicolas Arbor, Yutaka Mori, Masato Kanasaki, Keiji Oda, Abdel-Mijid Nourredine, Hisaya Kurashige, Michel Fromm, Pierre Cloutier, Andrew D Bass, Satoshi Kodaira, Léon Sanche, Rémi Barillon, YAMAUCHI TOMOYA
    The 65th JSAP Spring Meeting 2018, Mar. 2018, Japanese, WASEDA University, 本研究ではモンテカルロ法を用いたシミュレーションコードである、Geant4-DNA を用い て、潜在飛跡周囲の二次電子の個数密度を計算した。一般的にフルエンスは、ある球体に入 射する粒子の数を、その球の大円の断面積で除した値と定義される。本研究では、ある半径 を持った円柱側面を通過する電子の個数密度をイオントラック内径方向電子フルエンス (Radial Electron Fluence around Ion Tracks: REFIT)と定義し、プロトン、He 及び C イオン のそれぞれの検出閾値において計算した(Fig. 1)。飛跡中心からの距離が PADC の繰り返 し構造の長さの半分である 1 nm で、それぞれのイオン種の REFIT の値はオーダーが一致し た。また、この計算結果は上述した2段階の損傷形成モデルとも良く一致している。しかし, Domestic conference
    Oral presentation

  • ESR法を用いたガンマ線照射時のPADC検出器中フリーラジカルの研究
    Tamon Kusumoto, Takuya Otani, Yoshitaka Terashita, Masato Kanasaki, Keiji Oda, Kazuo Kobayashi, Sachiko Tojo, Yoshihide Honda, YAMAUCHI TOMOYA
    大阪大学産業科学研究所附属量子ビーム科学研究施設平成29年度成果報告会, Mar. 2018, Japanese, The Institute of Scientific and Industrial Research, Osaka University, Domestic conference
    Poster presentation

  • ESR 法を用いた PADC 中にガンマ線照射によって形成される損傷の研究
    Takuya Otani, Tamon Kusumoto, Yoshitaka Tashita, Masato Kanasaki, Keiji Oda, Kazuo Kobayashi, Sachiko Tojo, Yoshihide Honda, YAMAUCHI TOMOYA
    32nd Workshop on Solid State Nuclear Track Detectors, Mar. 2018, Japanese, National Institutes for Quantum and Radiological Science and Technology, QST, Kansai Photon Science Institute, Domestic conference
    Oral presentation

  • Determination of radiochemical yields of hydroxyl radical production in water under low energy proton irradiations
    N. Ludwig, Tamon Kusumoto, C. Galindo, P. Peaupardin, D. Muller, YAMAUCHI TOMOYA, Satoshi Kodaira, Remi Barillon, Q. Raffy
    2nd International Symposium on Radiation Detectors and Their Uses (ISRD 2018), Jan. 2018, English, High Energy Accelerator Research Organization (KEK), International conference
    Oral presentation

  • Applicability of polyimide films for identification of ultra-heavy components, including uranium ions in galactic cosmic ray
    Tamon Kusumoto, Satoshi Kodaira, Keiji Oda, YAMAUCHI TOMOYA, Remi Barillon, Atsushi Yoshida, Tadashi Kambara, Yoshiyuki Yanagisawa
    2nd International Symposium on Radiation Detectors and Their Uses, ISRD2018, Jan. 2018, English, High Energy Accelerator Research Organization (KEK), The detection threshold was defined as the original point where the evolution of etch pits start along the latent track, when the chemical etching were progressing from the front surface each heavy ion entered. In normal incidence, the original point can be observed as an intersect of the fitted growth curve of each etch pit, which is a plot of etch pit radius against the thick, International conference
    Oral presentation

  • Study of hydroxyl group in poly(allyl diglycol carbonate) and poly(vinyl alcohol)
    Kazuki Azuma, Tamon Kusumoto, Yoshitaka Terashita, Masato Kanasaki, Keiji Oda, YAMAUCHI TOMOYA
    The 13th International Workshop on Ionizing Radiation Monitoring, Dec. 2017, English, Chiyoda Technol Corporation, Oarai Research Center, International conference
    Poster presentation

  • Dual stage formation process of the damage by gamma ray in radio-sensitive parts in PADC detectors
    Takuya Otani, Tamon Kusumoto, Yoshitaka Terashita, Masato Kanasaki, Keiji Oda, Kazuo Kobayashi, Yoshihide Honda, Sachiko Tojo, YAMAUCHI TOMOYA
    The 13th International Workshop on Ionizing Radiation Monitoring, Dec. 2017, English, Chiyoda Technol Corporation, Oarai Research Center, International conference
    Poster presentation

  • An-up-date to local dose distribution theory considering effective charge for ion tracks and its applications to detection thresholds in PET and PI
    Morikazu Sakai, Tamon Kusumoto, Yoshitaka Terashita, Masato Kanasaki, Keiji Oda, YAMAUCHI TOMOYA
    The 13th International Workshop on Ionizing Radiation Monitoring, Dec. 2017, English, Chiyoda Technol Corporation, Oarai Research Center, International conference
    Poster presentation

  • 計測されていない放射能が存在しないことにされ計測されなかった被曝がなかったことにされていることについて
    YAMAUCHI TOMOYA
    科学技術論学会第１６回年次研究大会, Nov. 2017, Japanese, Kyushu University Maidashi-Campus, Domestic conference
    Oral presentation

  • Phenylalanine radiolysis under ion irradiation: Mechanistic study and determination of the radiolytic yields
    N. Ludwig, Tamon Kusumoto, C. Galindo, P. Peaupardin, Y. Le Gall, D. Muller, YAMAUCHI TOMOYA, Satoshi Kodaira, Remi Barillon, Q. Raffy
    30th Miller Conference on Radiation Chemistry, Oct. 2017, English, Castellamarre del Golfo, Italy, International conference
    Poster presentation

  • Molecular study of the radiolysis of a model protein irradiated by accelerated ions
    N. Ludwig, Tamon Kusumoto, C. Galindo, P. Peaupardin, Y. Le Gall, D. Muller, YAMAUCHI TOMOYA, Satoshi Kodaira, Remi Barillon, Q. Raffy
    30th Miller Conference on Radiation Chemistry, Oct. 2017, English, Castellamarre del Golfo, Italy, International conference
    Poster presentation

  • Low energy electron impact on some monomers composing carbonyl and/or ether
    Tamon Kusumoto, Pierre Cloutier, Michel Fromm, Andrew D Bass, Leon Sanche, YAMAUCHI TOMOYA
    第６０回放射線化学討論会, Sep. 2017, Japanese, National Institute of Advanced Industrial Science and Technology, Domestic conference
    Poster presentation

  • Analyses of latent tracks in PADC detectors discriminating the IR absorption peaks of methine and methylene groups
    Yoshitaka Terashita, Tamon Kusumoto, Keiji Oda, Masato Kanasaki, Yutaka Mori, Satoshi Kodaira, YAMAUCHI TOMOYA
    The 78th JSAP Autum Meeting, Sep. 2017, Japanese, Fukuoka International Congress Center, 昨年の秋の年会において重合度の異なる PADC やモノマーである ADC の赤外線吸収スペクトルについて報告し、3000 cm-1付近のCH2(メチレン基)とCH(メチン基)の伸縮振動に帰属されるピークの強度比と重合度との関係について報告した。具体的には、3 つのピークのうち 2960 cm-1 と 2890 cm-1 はメチレン基に帰属され、真ん中にある 2920 cm-1 はメチン基に帰属される。図 1 に示すように PADC 中の H のほとんどはメチレン基を構成しており、メチン基を構成しているのは、繰り返し構造あたり 2 個のみである。また、これらは重合の際に生まれる三叉路に位置している。これまでの PADC 中イオントラック構造の研究において、エーテル基とカーボネートエステル基が高い放射線感受性を有しており、3 次元構造を生み出しているポリ, Domestic conference
    Oral presentation

  • Distinct step-like changes in G values for the losses of typical functional groups in poly(ethylene terephthalate) along B ion tracks around the detection threshold 
    YAMAUCHI TOMOYA, Tamon Kusumoto, Yutaka Mori, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Remi Barillon
    27th International Conference on Nuclear Tracks and Radiation Measurements, Sep. 2017, English, The University of Strasbourg, International conference
    Oral presentation

  • Radial electron fluence around ion tracks as a new physical parameter for the detection threshold of PADC using Geant4-DNA toolkit
    Tamon Kusumoto, Ziad EL Bitar, Shogo Okada, Pierre Gillet, Nicolas Arbor, Masato Kanasaki, Keiji Oda, Abdel-Mijid Nourredine, Hisaya Kurashige, Remi Barillon, YAMAUCHI TOMOYA
    27th International Conference on Nuclear Tracks and Radiation Measurements, Aug. 2017, English, The University of Strasbourg, International conference
    Oral presentation

  • Quantitative analyses of hydroxyl group in poly(allyl diglycol carbonate) and poly(vinyl alcohol)
    Kazuki Azuma, Tamon Kusumoto, Yoshitaka Terashita, Masato Kanasaki, Keiji Oda, YAMAUCHI TOMOYA
    27th International Conference on Nuclear Tracks and Radiation Measurements, Aug. 2017, English, The University of Strasbourg, Domestic conference
    Poster presentation

  • Dual stage damage formation process in radio-sensitive parts of PADC detectors exposed to gamma rays
    Takuya Otani, Tamon Kusumoto, Yoshitaka Terashita, Masato Kanasaki, Keiji Oda, Yoshihide Honda, Sachiko Tojo, YAMAUCHI TOMOYA
    27th International Conference on Nuclear Tracks and Radiation Measurements, Aug. 2017, English, The University of Strasbourg, International conference
    Poster presentation

  • Dependence of G values for losses of typical functional groups along heavy ion tracks in bisphenol A polycarbonate on the the surface demsity
    YAMAUCHI TOMOYA, Tamon Kusumoto, Kazuki Azuma, Takuya Otani, Morikazu Sakai, Yutaka Mori, Masato Kanasaki, Keiji Oda, Remi Barillon
    27th International Conference on Nuclear Tracks and Radiation Measurements, Aug. 2017, English, The University of Strasbourg, International conference
    Poster presentation

  • An up-to-date local dose distribution theory for ion tracks and its applications to detection thresholds in PET and PI
    Morikazu Sakai, Tamon Kusumoto, Yoshitaka Terashita, Masato Kanasaki, Keiji Oda, YAMAUCHI TOMOYA
    27th International Conference on Nuclear Tracks and Radiation Measurements, Aug. 2017, English, The University of Strasbourg, International conference
    Poster presentation

  • Anomalous increase of the contact angle of water droplets on the surface of PADC detector exposed to proton
    Tamon Kusumoto, Koji Kuraoka, Yutaka Mori, Masato Kanasaki, Satoshi Kodaira, Yoshihide Honda, Sachiko Tojo, Remi Barillon, YAMAUCHI TOMOYA
    27th International Conference on Nuclear Tracks and Radiation Measurements, Aug. 2017, English, The University of Strasbourg, International conference
    Poster presentation

  • Indoor radioactive contaminations in the houses located in the evacuated region - An instance at 6 years later of the Catastrophe of Fukushima Daiichi Nuclear Power Plants
    YAMAUCHI TOMOYA
    日本科学史学会第６４回年会, Jun. 2017, Japanese, Kagawa University, 年間 50 mSv 未満の地域への避難指示が 2017 年 3 月までに解除されようとしている。避難を求 める声はかき消され、「除染」が進められている。「除染」を行っても、決して元の状態には戻ら ないにも関わらず、「除染」を行った後には住民はそこに戻るという論理が政策としてまかり通っ ている。ここではこの議論で決定的に抜け落ちている問題を提起したい。それは屋内の放射能汚 染である。 福島県南相馬市内の家屋や公共施設内の放射能汚染についての調査に関わる機会を得た。ある 施設は福島第一原発からは北方に 23 km 離れたところに位置する。そこには調理実習室があり、 「お菓子づくり教室(2016.3.6.)」や「おつまみ作り教室(2016.3.12.)」、「スイーツ作り教室 (2016.3.16.)」が開催されていた。最後の料理教室と同日になるが、同調理室, Domestic conference
    Oral presentation

  • Chemical criterion for the response of polymeric nuclear track detectors
    YAMAUCHI TOMOYA
    平成２８年度HIMAC共同利用研究成果発表会, Apr. 2017, Japanese, ホテルポートプラザちば, Domestic conference
    Oral presentation

  • Studies on latent track structure using microscopic infrared spectrometric system.
    Takahiro Ueda, Yoshitaka Terashita, Tamon Kusumoto, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, YAMAUCHI TOMOYA
    The 31st Workshop on Solid State Nuclear Track Detectors, Mar. 2017, Japanese, QST Kansai Photon Science Institute, In recent years, we have used the microscopic infrared spectrometric system (IRT) to study latent track structure, in addition to normal FT/IR spectrometers. The purpose of present study is to clarify the applicability of the mapping function of the IRT for the structural modification along heavy ion tracks in bisphenol A poly carbonate (PC), which exposed to Kr-84, Fe-56 ions, Domestic conference
    Oral presentation

  • A study on polyethylene terephthalate as an element of the stacked track detectors for heavy ions classification
    Takuya Ueno, Tamon Kusumoto, Yoshitaka Terahita, Masato Kaanasaki, Keiji Oda, Satoshi Kodaira, YAMAUCHI TOMOYA
    The 31st Workshop on Solid State Nuclear Track Detectors, Mar. 2017, Japanese, QST Kansai Photon Science Institute, Polyethylene terephthalate（PET） has been used as an etched track detector with high detection threshold. It has no sensitivity to protons and alpha particles. This means it can detect heavier ions even in the mixed beams which contains proton and He ions. By chemical etching tests, the responses of PET has been evaluated for heavy ions, H, 10B, 11B, C, N, O, Ne, Al, Si, Ar, Fe,, Domestic conference
    Oral presentation

  • An up-to-date local dose distribution theory for ion tracks and its applications to detection thresholds in PET and PI
    Morikazu Sakai, Tamon Kusumoto, Takuya Ueno, Yoshitaka Terashita, Masato Kanasaki, Keiji Oda, YAMAUCHI TOMOYA
    The 31st Workshop on Solid State Nuclear Track Detectors, Mar. 2017, Japanese, QST Kansai Photon Science Institute, The effective charge, Zeff, is a parameter to express the mean equilibrium charge states of projectiles. In present study, we apply Zeff which was proposed by Schiwietz et al., to radial dose distribution model. The up-to-date local dose distribution model has been utilized to evaluate the track structure at the detection threshold for the etch pit formation of PET and PI., Domestic conference
    Oral presentation

  • An evaluation of the damage size formed in PADC under the UV exposure
    Tamon Kusumoto, Yutaka Mori, Masato Kanasaki, Keiji Oda, YAMAUCHI TOMOYA
    The 31st Workshop on Solid State Nuclear Track Detecors, Mar. 2017, Japanese, QST Kansai Photon Science Institute, Decreasing behavior of carbonyl groups in poly(allyl diglycol carbonate), PADC, has been studied using FT-IR spectroscopy, during 222 nm UV irradiations. Under the UV irradiations, the reduction of carbonyl is observed only above the absorbed fluence of 3.0×1019 photons/cm2, while monotonically decreasing the ether and C-O-C bond in carbonate ester. These are concordant to the, Domestic conference
    Oral presentation

  • An evaluation of the damage size formed in PADC during 222 nm UV exposure
    Tamon Kusumoto, Yutaka Mori, Masato Kanasaki, Keiji Oda, Remi Barillon, YAMAUCHI TOMOYA
    The 64th JSAP Spring Meeting 2017, Mar. 2017, Japanese, Pacifico Yokohama, ポリアリルジグリコールカーボネート(PADC)検出器は、最も感度の高いエッチング型飛跡検出器として知られている。我々は先に実施した 28 MeV 電子線照射実験にて、カーボ ネートエステル基の損傷は隣接するエーテル基が損傷を受けた後にのみ生じること、そし て、その放射線化学収率はエーテル基のそれと同程度にまで著しく増大することを見出した。それは電子トラックの重なりが顕著となるクリティカルフルエンス以上で観察され るが、同様の傾向は波長 222 nm の紫外線照射においても確認されている。本研究では、 紫外線照射下で確認された段階的な損傷形成過程を理解することを目的とし、電子線トラ ックの重なりを考察する際に用いた直線的損傷である、トラックの重なりモデルを点的損 傷と考えられる UV 損傷の重なりに拡張し、考察を進めた。, Domestic conference
    Oral presentation

  • Reviwe of studies on ion tracks formed in polymeric etched track detectors
    YAMAUCHI TOMOYA
    31st Workshop on SSNTDs, Mar. 2017, Japanese, QST Kansai Photon Science Institute, Domestic conference
    [Invited]
    Invited oral presentation

  • Some Features of Latent Ion Tracks Formed in Polymeric Etched Track Detectors around Their Detection Thresholds
    YAMAUCHI TOMOYA, Tamon Kusumoto, Yoshitaka Terashita, Masato Kanasaki, Keiji Oda, Remi Barillon
    The 64th JSAP Spring Meeting 2017, Mar. 2017, Japanese, Pasifico Yokohama, 本研究における高分子系エッチング型飛跡検出器としては、ポリアリルジグリコールカーボネ ート(PADC)やビスフェノール A ポリカーボネート(PC)、ポリエチレンテレフタレート(PET)、 ポリイミド樹脂(PI)の Kapton や UPILEX を念頭においている。PADC は数 MeV のプロトンに 対して感度を有するが、Kapton は図1に示すように Si や Al 程度の重イオンでなければブラッグ ピーク近傍でも感度を持たない。また、PC はアルファ線を記録するが、PET には写らないなど、 これら高分子材料間の飛跡形成感度は大きく異なっている。我々は飛跡検出器としての感度とそ れぞれの高分子構造との関係を明らかにする目的をもって、これらの高分子材料中に形成される イオントラック構造を、赤外線分光分析法を用いて系統的に調べてきた。その一方で, Domestic conference
    Oral presentation

  • Structure of Latent Tracks in Polymeric Etched Track Detectors
    Tamon KUsumoto, Yutaka Mori, YAMAUCHI TOMOYA
    Technical Meeting on "Optical and Quantum Devices", IEE Japan, Mar. 2017, Japanese, Hyogo Prefecture Citizens' Hall, The latent track structures in polymeric etched track detectors of PET, PC and PADC films are examined comprehensively for proton and heavy ions. Chemical damage parameters of damage density, which is the number of loss of considered functional groups per unit distance of track length, effective track core radius, in which the chemical groups are lost, and the radiation chemica, Domestic conference
    [Invited]
    Invited oral presentation

  • On the Workshop of Solid State Nuclear Track Detectors The history and future outlook
    YAMAUCHI TOMOYA
    31st Workshop on SSNTDs, Mar. 2017, Japanese, QST Kansai Photon Science Institute, Domestic conference
    [Invited]
    Invited oral presentation

  • Step-like modification of ion tracks around the detection threshold in PADC
    Yoshitaka Terashita, Tamon Kusumoto, Keiji Oda, Masato Kanasaki, Satoshi Kodaira, YAMAUCHI TOMOYA
    The 64th JSAP Spring Meeting, Mar. 2017, Japanese, Tokyo Institute of Technology, Domestic conference
    Oral presentation

  • Step-like modification of ion tracks around the detection threshold in PADC
    Yoshitaka Terashita, Tamon Kusumoto, Keiji Oda, Masato Kanasaki, Satoshi Kodaira, YAMAUCHI TOMOYA
    The 31st Workshop on Solid State Nuclear Track Detectors, Mar. 2017, Japanese, QST Kansai Photon Science Institute, It is well known the PADC is the most sensitive in solid state nuclear track detector for 40 years, but there are many still unexplained parts about the structural characteristic to decide the detectivity. The purpose of this research performs H ion and He ion irradiation of the neighborhood of 17 eV/nm in PADC and is to elucidate a structural characteristic by an infrared spec, Domestic conference
    Oral presentation

  • Quantitative analyses of hydroxyl group in polyvinyl alcohol films
    Kazuki Azuma, Tamon Kusumoto, Yoshitaka Terashita, Takuya Ueno, Takahiro Ueda, Yuka Kameda, Masato Kanasaki, Keiji Oda, YAMAUCHI TOMOYA
    The 31st Workshop on Solid State Nuclear Track Detectors, Mar. 2017, Japanese, QST Kansai Photon Science Institute, PADC is know as an etched track detector which has very high sensitivity and excellent charge resolution. When an ion passed through PADC, it generated an ion track Quantitative analyses are required for hydroxyl group formed along track. It will help us to develop new detectors with higher sensitivity. So the present authors tried to analyze PVA in which has hydroxyl groups fo, Domestic conference
    Oral presentation

  • Quantitative analyses of OH group in PADC and their chemical etching property
    Yuka Kameda, Masato Kanasaki, Satoshi Jinno, Yuji Fukuda, Keiji, YAMAUCHI TOMOYA
    The 31st Workshop on Solid State Nuclear Track Detectors, Mar. 2017, Japanese, QST Kansai Photon Science Institute, 近年、PADC中に形成される潜在飛跡形成機構を明らかにする研究が盛んに行われているが、未だ未解明な部分が残されている。特に、切断された高分子鎖の端点に存在するヒドロキシル基は、感度を決定する上で重要なパラメータとなるトラックエッチング速度を支配している。本研究では、形成されるトラックの化学構造を明らかにすることを目的とし、PADC中に存在するヒドロキシル基の定量分析と、その化学エッチング特性について調べた。, Domestic conference
    Oral presentation

  • The relation between nuclear tracks in PADC and secondary electron fluence
    Tamon Kusumoto, Keiji Oda, Ziad EL Bitar, Nicolas Arbor, Remi Barillon, YAMAUCHI TOMOYA
    The 31st Workshop on Solid State Nuclear Track Detectors, Mar. 2017, Japanese, QST Kansai Photon Science Institute, In our recent study, two-steps damage process which carbonate ester in poly(allyl diglycol carbonate), PADC, is bombarded only when neighboring ether was lost has been clarified. This implies the local fluence of secondary electrons are one of key points to elucidate the chemical damage structure in PADC. In this study, the local fluence of secondary electrons around the ion tr, Domestic conference
    Oral presentation

  • Dual stage formation process of the damage due to gamma ray in radio-sensitive parts in PADC detectors
    Tamon Kusumoto, Takahiro Ueda, Takuya Ueno, Yuka Kamada, Yoshitaka Terashita, Masato Kanasaki, Keiji Oda, Yoshihide HOonda, Sachiko Tojp, YAMAUCHI TOMOYA
    The 31st Workshop on Solid State Nuclear Track Detectors, Mar. 2017, Japanese, QST Kansai Photon Science Institute, Poly(allyl diglycol carbonate), PADC, has been known as the most sensitive etched track detector for 40 years. The number density of ether decreases linearly during gamma irradiation. But the number density of carbonate ester decrease only above the absorbed dose of 60 kGy. The present result supports us to understand the layer structure of ion track in PADC., Domestic conference
    Oral presentation

  • IR spectrometric analyses on plastic track detectors (PADC) with different degrees of polymerization
    Yoshitaka Terashita, TAMON KUSUMOTO, TAKAHIRO UEDA, Takuya Ueno, Yuka Kameda, Masato Kanasaki, Keiji Oda, Ippei Ishikawa, YAMAUCHI TOMOYA
    The 77th JSAP Autum Meeting 2016, Sep. 2016, Japanese, Toki Messe Niigata Convention Center, Domestic conference
    Oral presentation

  • A study on polyethylene terephthalate film as an etched track detector
    Takuya Ueno, Tamon Kusumoto, Keiji Oda, Masato Kanasaki, Hisashi Kitamura, Stoshi Kodaira, YAMAUCHI TOMOYA
    The 77th JSAP Autum Meeting 2016, Sep. 2016, Japanese, TOKI MESSE NIIGATA CONVENTION CENTER, Domestic conference
    Oral presentation

  • Evaluation of radiation damage parameter using mapping function of the microscopic infrared spectrometric system (IRT)
    Takahiro Ueda, Tamon Kusumoto, Keiji Oda, Masato Kanasaki, Hisashi Kitamura, Satoshi Kodaira, YAMAUCHI TOMOYA
    The 77th JSAP Autum Meeting 2016, Sep. 2016, Japanese, TOKI MESSE NIIGATA CONVENTION CENTER, Domestic conference
    Oral presentation

  • Dual stage formation process of the damage in radio-sensitive parts in PADC detectors
    Tamon Kusumoto, Yutaka Mori, Masato Kanasaki, Keiji Oda, Yoshihide Honda, Sachiko Tojo, Michel Fromm, Jean-Emmanuel Groetz, Satoshi Kodaira, Hisashi Kitamura, Remi Barillon, YAMAUCHI TOMOYA
    第59回放射線化学討論会, Sep. 2016, Japanese, Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, PADCに28 MeVの電子線を照射し、赤外線分光分析を用いて潜在飛跡形成機構の解明のための研究を行った。その結果、カルボニル基は、隣接するエーテル基が損傷を受けた場合にのみ損傷を受ける事が明らかになった。これは、トラックの層構造を理解する上で非常に重要な結果である。, Domestic conference
    Oral presentation

  • Depth dependence of the track sensitivity for PADC detectors
    Yuka Kameda, Masato Kasnasaki, Yuji Fkuda, Satoshi Jinno, Keiji Oda, YAMAUCHI TOMOYA
    The 77th JSAP Autum Meeting 2016, Sep. 2016, Japanese, TOKI MESSE NIIGATA CONVENTION CENTER, Domestic conference
    Oral presentation

  • A study on polyethylene terephthalate film as an etched track detector with higher detection threshold (2)
    TAKUYA UENO, TAMON KUSUMOTO, KEIJI ODA, MASATO KANASAKI, HISASHI KITAMURA, SATOSHI KODAIRA, YAMAUCHI TOMOYA
    The 63rd JSAP Spring Meeting, 2016, Mar. 2016, Japanese, Tokyo Institute of Technology, 本研究 では PET に焦点を当て重イオン毎の検出閾値と感度を求めた。また、従来の研究からプロトン や He と C 以上の比較的重いイオンとの間で化学的損傷パラメータの傾向に明確な違いがある ことが分かっている[2]。そこで赤外分光法を用いて PET の分子レベルでの損傷を評価するため PET の主鎖を構成する官能基ごとの化学的損傷パラメータを求めた。, Domestic conference
    Oral presentation

  • 高分子系飛跡検出器内の放射線損傷形成機構
    YAMAUCHI TOMOYA
    平成２７年度大阪大学産業科学研究所附属量子ビーム科学研究施設成果報告会, Mar. 2016, Japanese, The Institute of Scientific and Industrial Research, Osaka University, Domestic conference
    Oral presentation

  • Irradiation effects of heavy ions on polyimide films by infrared microscopy
    RYUNOSUKE IKENAGA, MASATO KANASAKI, TAMON KUSUMOTO, SHUICHIRO YASUDA, KEIJI ODA, SATOSHI KODAIA, HISASHI KITAMURA, YAMAUCHI TOMOYA
    The 30th Workshop on Solid State Nuclear Track Detectors, Mar. 2016, Japanese, Fukui University, Tsuruga Campus, A series of well established response and FT-IR spectrometric studies has been carried out on PI exposed to heavy ions at energies less than 6 MeV/n. We conducted the experiments on PI films exposed to heavy ions at energies more than 100 MeV/n to give a sufficient response at high energy resions. Irradiations with heavy ions were performed in air at the port of the physical mu, Domestic conference
    Oral presentation

  • Studies on latent track structure using mapping function of the microscopic infrared spectrometric system (IRT)
    TAKAHIRO UEDA, TAMON KUSUMOTO, KEIJI ODA, MASATO KANASAKI, HISASHI KITAMURA, SATOSHI KODAIRA, YAMAUCHI TOMOYA
    The 63rd JSAP Spring Meeting, 2016, Mar. 2016, Japanese, Tokyo Institute of Technology, 現在高分子トラック損傷構造について赤外顕微鏡を用いた分析が行われている。従来用いて きた赤外分光器と比べると測定域が小さく顕微鏡下で任意に測定点を決めることが出来るため、 高フルエンスを実現するためにビームを細くするような小さな範囲を測定するために利用され ている。しかし、ビーム照射域を絞ると強度にばらつきが生じることが知られており、そのため 正確な定量分析が阻まれる。そこで、赤外顕微鏡の機能の一つである任意に格子点数や測定面積 を決めることが可能である顕微マッピング測定機能の活用を試みた。同機能を用いることによ りビーム強度の分布を明らかにすると共に、照射前後の吸光度比より化学的損傷パラメータの 算出が可能となる。さらに過去に得られた結果と比較することにより、顕微マッピング機能の有 効性の確認を行うことが本研究の目的である。, Domestic conference
    Oral presentation

  • Studies on latent track structure using mapping function of the microscopic infrared spectrometric system (IRT)
    HIROTAKA UEDA, TAMON KUSUMOTO, KEIJI ODA, MASATO KANASAKI, HISASHI KITAMURA, SATOSHI KODAIRA, YAMAUCHI TOMOYA
    The 30th Workshop on Solid State Nuclear Track Detectors, Mar. 2016, Japanese, Fukui University, Tsuruga Campus, The purpose of the present study is to clarify the applicability of the mapping function of the microscopic FT-IR system of IRT for the beam profile evaluation supplied at the port in PH1 room at HIMAC. The chemical damage parameters for loss of typical functional groups, namely effective track core radius, damage density and radiation chemical yield, in poly bisphenol A carbon, Domestic conference
    Oral presentation

  • A study on the heavy ion track in polyethylene terephthalate.
    TAKUYA UENO, TAMON KUSUMOTO, RYUNOSUKE IKENAGA, SHUICHIRO YASUDA, KEIJI ODA, HISASHI KITAMURA, SATOSHI KODAIRA, YAMAUCHI TOMOYA
    The 30th Workshop on Solid State Nuclear Track Detectors, Mar. 2016, Japanese, Fukui University, Tsuruga Campus, Polyethylene terephthalate（PET） is not a high sensitive etched track detector, and it has no sensitivity to protons and alpha rays. This means it can detect heavier ions even in the mixed beams which contains proton and He ions. In this study, the responses of PET has been determined for heavy ions, C, N, O, Ne, Al, Si, Ar, Fe, Kr, and Xe using HIMAC. As a result, the threshold, Domestic conference
    Oral presentation

  • Detection thresholds for heavy ions of polyimide etched track detectors
    SHUICHIRO YASUDA, TAMON KUSUMOTO, RYUNOSUKE IKENAGA, TAKUYA UENO, KEIJI ODA, SATOSHI KODAIRA, HISASHI KITAMURA, KOJI KURAOKA, YAMAUCHI TOMOYA
    The 30th Workshop on Solid State Nuclear Track Detectors, Mar. 2016, Japanese, Fukui University, Tsuruga Campus, The track registration property in polyimides has been examined for proton and heavy ions, including He, C, N, O, Ne, Al, Si, Ar, Fe, Kr, and Xe ions. The examined stopping power covers ranges from 10 to 12720 keV/μm. The thresholds for heavy ions of polyimide were determined by observation of etch pits within the radius of 0.5 μm using Scanning Electron Microscope. And require, Domestic conference
    Oral presentation

  • Structural analysis of high energy proton tracks in PADC detector
    TAMON KUSUMOTO, YUTAKA MORI, MASATO KANASAKI, KEIJI ODA, SATASHI KODAIRA, HISASHI KITAMURA, YAMAUCHI TOMOYA
    30th Workshop on Solid State Nuclear Track Detectors, Mar. 2016, Japanese, Fukui University, Tsuruga Campus, FT-IR spectrometric studied has been investigated to understand the latent track structure in poly(allyl diglycol carbonate), PADC, which were exposed to protons with energies of 20, 30 and 70 MeV. These energies are too high to register etchable tracks in PADC. The chemical damage parameters, effective track core radius and damage density, for losses of the ether and carbonate, Domestic conference
    Oral presentation

  • Analysis of 28 MeV electron tracks in PADC detectors
    TAMON KUSUMOTO, YUTAKA MORI, MASATO KANASKI, KEIJI ODA, YOSHIHIDE HONDA, SACHIKO TOJO, YAMAUCHI TOMOYA
    The 63rd JSPA Spring Meeting 2016, Mar. 2016, Japanese, Tokyo Institute of Technology, Domestic conference
    Oral presentation

  • Analysis of 28 MeV electron tracks in PADC detectors
    TAMON KUSUMOTO, YUTAKA MORI, MASATO KANASAKI, KEIJI ODA, SATASHI KODAIRA, YOSHIHIDE HONDA, SACHIKO TOJO, YAMAUCHI TOMOYA
    30th Workshop on Solid State Nuclear Track Detectors, Mar. 2016, Japanese, Fukui University, Tsuruga Campus, The latent track structure of 28 MeV electrons in poly(allyl diglycol carbonate), PADC, has been investigated. The number density of ether bond decreases linearly with increasing the fluence. On the contrary to this, that of carbonate ester and CH groups decreases above the critical fluence of 1.6×1015 electrons/cm2, which corresponds to the critical fluence where the track ove, Domestic conference
    Oral presentation

  • A study of the hydroxyl group generated around nuclear tracks in PADC detectors
    YUKA KAMADA, TAMON KUSUMOTO, RYUNOSUKE IKENAGA, SHUICHIRO YASUDA, KEIJI ODA, HISASHI KITAMURA, SATOSHI KODAIRA, YAMAUCHI TOMOYA
    The 63rd JSAP Spring Meeting, 2016, Mar. 2016, Japanese, Tokyo Institute of Technology, 潜 在飛跡の構造に関しては PADC 薄膜に対する赤外分光法を用いた研究が系統的に行われてきたが、これまでの研究 からプロトン及び重イオンを照射した PADC 中において新たに形成されている分子鎖の端点にヒドロキシル基が生 じており、さらに大気中からトラックの内表面に集まる水の存在が確認されている。このヒドロキシル基とトラッ ク近傍に集まる水を定量評価し、その挙動を明確にすることを目的として研究が進められてきているが、これまでの BARYOTRAK に加えて新たに HARZLAS TNF-1 についての実験に着手した。, Domestic conference
    Oral presentation

  • A study of the hydroxyl group generated around nuclear tracks in PADC detectors
    YUKA KAMEDA, TAMON KUSUMOTO, RYUNOSUKE IKENAGA, SHUICHIRO YASUDA, KEIJI ODA, HISASHI KITAMURA, SATOSHI KODAIRA, YAMAUCHI TOMOYA
    The 30th Workshop on Solid State Nuclear Track Detectors, Mar. 2016, Japanese, Fukui University, Tsuruga Campus, This study is intended to determine the amount of OH groups in PADC detector by means of FT-IR spectroscopy. We use two types of PADC films commercially provided under the name of BARYOTRAK and HARZLAS TNF-1. The PADC films were exposed to protons and heavy ion in air and in vacuum conditions. It has been confirmed that OH groups were formed in irradiated PADC track detector as, Domestic conference
    Oral presentation

  • Radiation chemical yields for loss of carbonyl bonds in poly(allyl diglycol carbonate) and other polymeric etched track detector at the LETs ranging from 0.025 to 12,000 keV/µm
    Tamon Kusumoto, Yutaka Mori, Masato Kanasaki, Keiji ODA, Satoshi Kodaira, Hisashi Kitamura, Yoshihide Honda, Sachiko Tojo, Remi Barillon, YAMAUCHI TOMOYA
    International Symposium on Radiation Detectors and Their Uses 2016, Jan. 2016, English, High Energy Accelerator Research Organization(KEK), International conference
    Oral presentation

  • A study of the hydroxyl group contained in pristine PADC detectors
    Yuka KAMEDA, Tamon KUSUMOTO, Ryunosuke IKENAGA, Syuichiro YASUDA, Masato KANASAKI, Keiji ODA, Hisashi KITAMURA, Satoshi KODAIRA, YAMAUCHI TOMOYA
    JSAP Autumn Meeting 2015, Sep. 2015, Japanese, Nagoya Congress Center, Domestic conference
    Oral presentation

  • A study on polyethylene terephthalate film as an etched track detector with higher detection threshold
    Takuya UENO, Tamon KUSUMOTO, Ryunosue IKENAGA, Syuichiro Yasuda, Masato KANASAKI, Keiji ODA, Hisashi KITAMURA, Satoshi KODAIRA, YAMAUCHI TOMOYA
    JSAP Autumn Meeting 2015, Sep. 2015, Japanese, Nagoya Congress Center, Domestic conference
    Oral presentation

  • Studies on latent track structure in polymeric detectors using the microscopic infrared spectrometric system (IRT)
    Takahiro UEDA, Tamon KUSUMOTO, Ryunosuke IKENAGA, Syuichiro YASUDA, Masato KANASAKI, Keiji ODA, Hisashi KITAMURA, Satoshi KODAIRA, YAMAUCHI TOMOYA
    JSAP Autumn Meeting 2015, Sep. 2015, Japanese, Nagoya Congress Center, Domestic conference
    Oral presentation

  • Radiation damage parameters for polyimide films (BPDA/ODA) of heavy ion irradiation
    Ryunosuke IKENAGA, Tamon KUSUMOTO, Syuichiro YASUDA, Masato KANASAKI, Keiji ODA, Satoshi KODAIRA, Hisashi KITAMURA, YAMAUCHI TOMOYA
    JSAP Autumn Meeting 2015, Sep. 2015, Japanese, Nagoya Congress Ceter, Domestic conference
    Oral presentation

  • A study on the heavy ion track in polyimide films (BPDA/ODA)
    Syuichiro YASUDA, Tamon KUSUMOTO, Masato KANASAKI, Keiji ODA, Satoshi KODAIRA, Hisashi KITAMURA, Koji KURAOKA, YAMAUCHI TOMOYA
    JSAP Autumn Meeting 2015, Sep. 2015, Japanese, Nagoya Congress Center, Domestic conference
    Oral presentation

  • A role of low energy electrons on nuclear tracks in PADC
    Tamon KUSUMOTO, Yutaka Mori, Masato KANASAKI, Keiji ODA, Satoshi KODAIRA, Hisashi KITAMURA, Yoshihide HONDA, Sachiko TOJO, YAMAUCHI TOMOYA
    JSAP Autumn Meeting 2015, Sep. 2015, Japanese, Nagoya Congress Center, Domestic conference
    Oral presentation

  • Chemical criterion for the response of polymeric nuclear track detectors
    YAMAUCHI TOMOYA
    2014 Annual meeting of the research project with heavy ions at NIRS-MIMAC, Apr. 2015, Japanese, ホテルポートプラザちば, Domestic conference
    Oral presentation

  • Generalization of radiator design techniques for personal neutron dosemeters by unfolding method
    ODA KEIJI, T. Nalayama, K. Umetani, M. Kajihara, T. Yamauchi
    International Conference on Individual Monitoring of Ionising Radiation, Apr. 2015, English, Bruges, Belgium, International conference
    Poster presentation

  • Response studies of charged particles to the newly prepared polymers from the monomers having different molecular chain length by micro FT-IR spectroscopy
    Hajime Kawashima, Satoshi Kodaira, Nakahiro Yasuda, Ryunosuke Ikenaga, YAMAUCHI TOMOYA, Keiichi Kobayashi, Eric Benton
    29th Workshop on Solid State Nuclear Track Detectors, Mar. 2015, Japanese, Tsuruga Campus, Fukui University, Domestic conference
    Oral presentation

  • Applicability of SSNTDs for mixed radiation fields including heavy ions
    YAMAUCHI TOMOYA, Elywa Mohhamed, Tamon KUsumoto, Akira Tao, Ryunosuke Ikenaga, Shuichirou Yasuda, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, Mamiko Nishiuchi, Hisonao Sakaki, Masato Kanasaki, Yuji Fukuda, Kiminori Kondo
    The 62nd Japan Society of Applied Physics Spring Meeting, 2015, Mar. 2015, Japanese, Shonan Campus, Tokai University, PADC はプロトンに対しても感度を有しているが、PET(ポリエチレン テレフタレート)や PI(ポリイミド)は不感である。また PET はブラッグピーク近傍の炭素や酸素 に対しては感度を有するがPIはそれらに対しても不感である。したがってPIを利用することでAlよりも原子番号の大きな重イオンを弁別計測することが可能である。検出感度の低さは一般に不利な性質であると理解されがちであるが、固体飛跡検出器をひとつのセ ットにした場合には、プロトンや他の軽イオンが作るエッチピットのノイズに邪魔されること無く重イオン成分が検出できるので、利点に変わる。発表では原子力研究開発機構・関西光科学研究所の大型レーザー施設 J-KAREN を利用したイオン加速実験の結果についても言及する。, Domestic conference
    Oral presentation

  • Applicability of SSNTDs for mixed radiation fields including heavy ions
    YAMAUCHI TOMOYA, Elywa Mohammed, Tamon Kusumoto, Akira Tao, Ryunosuke Ikenaga, Syuichiro Yasuda, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, Mamiko Nishiuchi, Hironao Sakaki, Masato Kanasaki, Yuji Fukuda, Kiminori KOndo
    29th Workshop on Solid State Nuclear Track Detectors, Mar. 2015, Japanese, Tsuruga Campus, Fukui University, Domestic conference
    Oral presentation

  • Comparison of FT/IR spectrometric system and microscopic infrared spectrometric system (IRT)
    Takahiro Ueda, Tamon Kusumoto, Ryunosuke Ikenaga, Syuichiro Yasuda, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, YAMAUCHI TOMOYA
    29th Workshop on Solid State Nuclear Track Detectors, Mar. 2015, Japanese, Tsuruga Campus, Fukui University, Domestic conference
    Oral presentation

  • Comparison of formula for effective charge used in track detectors and recent accelerator physics
    Tamon Kusumoto, Takuya Ueno, Keiji Oda, YAMAUCHI TOMOYA
    29th Workshop on Solid State Nuclear Track Detectors, Mar. 2015, Japanese, Tsuruga Campus, Fukui University, Domestic conference
    Oral presentation

  • A study on polyimide films as an etched track detector with higher registration threshold
    Shuichiro Yasuda, Kenya Matsukawa, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Hisashi Kitamura, Koji Kuraoka, YAMAUCHI TOMOYA
    The 62nd Japan Society of Applied Physics Spring Meeting, 2015, Mar. 2015, Japanese, Shonan Campus, Tokai University, 本研究は耐放射線性に優れるエンジニアリングプラスチックとして知 られているポリイミド樹脂に注目し、その高閾値飛跡検出器としての応用可能性を探ることを目的とした。エッチピット径とエッチング処理による溶出厚の関係を求めたところ、1.1 MeV/n の Ne イオンを照射した試料ではエッチピットがエッチング処理の途中から生成していることが 確認できた。この現象はポリイミド樹脂の一種である UPILEX-S(宇部興産社製) 及び Kapton(ニラコ社製)においても確認することができた。新しい試みとして走査型電 子顕微鏡を用いて、UPILEX-RN、UPILEX-S、及び Kapton を対象として生成初期段階のエッチピットの観察及びエッチピット検出閾値の決定を行った。, Domestic conference
    Oral presentation

  • A study on polyimide films as an etched tracks detector with higher registration threshold
    Syuichiro Yasuda, Tamon Kusumoto, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, Koji Kuraoka, YAMAUCHI TOMOYA
    29th Workshop on Solid State Nuclear Track Detectors, Mar. 2015, Japanese, Tsuruga Campus, Fukui University, Domestic conference
    Oral presentation

  • Application of solid state nuclear tracks detectors to the proton imaging of laser plasmas
    Yuji Fukuda, Masato Kanasaki, Kiminori Kondo, Akira Sugiyama, Keiji Oda, YAMAUCHI TOMOYA
    29th Workshop on Solid State Nuclear Track Detectors, Mar. 2015, Japanese, Tsuruga Campus, Fukui University, Domestic conference
    Oral presentation

  • Changes in the surface characteristics of ion-irradiated and chemical-etched plastics
    Kenta Iwasaki, Tamon Kusumoto, Ryunosuke Ikenaga, Syuichiro Yasuda, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, YAMAUCHI TOMOYA
    29th Workshop on Solid State Nuclear Track Detectors, Mar. 2015, Japanese, Tsuruga campus, Fukui University, Domestic conference
    Oral presentation

  • Structure of damage on Xe ion (290 MeV/n), Kr ion (400 MeV/n)-irradiated polyimide films
    Ryunosuke Ikenaga, Tamon Kusumoto, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, YAMAUCHI TOMOYA
    29th Workshop on Solid State Nuclear Track Detectors, Mar. 2015, Japanese, Tsuruga Campus, Fukui University, Domestic conference
    Oral presentation

  • Structure of damage on Xe ion (290 MeV/n), Kr ion (400 MeV/n)-irradiated polyimide films
    Ryunosuke Ikenaga, Kenya Matsukawa, Keiji Oda, Teruaki Konishi, Satoshi Kodaira, Hisashi Kitamura, YAMAUCHI TOMOYA
    The 62nd Japan Society of Applied Physics Spring Meeting, 2015, Mar. 2015, Japanese, Shonan Campus, Tokai University, 本研究では、 ポリイミド樹脂の Kapton を用いて 290 MeV/n 以上の重イオンを照射し、赤外分光法を用いて損傷構造を分析することを目的とした。同分析法より、重イオン照射による各官能基 の吸光度の低下を確認した。続いてトラック単位長さあたりの損傷数(損傷密度)、放射 線化学収率(G 値)及び実効的トラックコア半径を算出し、これまでの研究で得られた 6 MeV/n 以下の重イオン照射効果とともに比較、評価した。, Domestic conference
    Oral presentation

  • A role of the OH groups along nuclear tracks on determining the response of PADC
    Tamon Kusumoto, Yutaka Mori, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, YAMAUCHI TOMOYA
    The 62nd Japan Society of Applied Physics Spring Meeting, 2015, Mar. 2015, Japanese, Shonan Campus, Tokai University, ポリアリルジグリコールカーボネート検出器(PADC)は、最も感度の高いエッチング型飛跡検出器として知られている。我々は、PADC 中に形成されるイオントラック(潜在飛跡)の 構造を理解するためにその薄膜に対する赤外線分光分析を利用した体系的な分析を進めてきており、その高分子鎖中のエーテル基やカーボネートエステル基が損傷を受けやすく、トラックエッチング速度の関係する新たな端点としてヒドロキシル基が生成していることを明らかにしてきた。本研究では PADC 中に形成されるトラックの化学構造を 明らかにすることを目的とし、重イオン照射後にイオントラック内に形成されるヒドロキシル基の定量評価を試みた。, Domestic conference
    Oral presentation

  • A role of the OH groups along nuclear tracks on determining the response of PADC
    Tamon KusumotO, Yutaka Mori, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, YAMAUCHI TOMOYA
    29th Workshop on Solid State Nuclear Track Detectors, Mar. 2015, Japanese, Tsuruga Campus, Fukui University, Domestic conference
    Oral presentation

  • A study on the hydroxyl group beebread around nuclear tracks in PADC detectors
    Yuki Kameda, Tamon Kusumoto, Ryunosuke Ikenaga, Syuichiro Yasuda, Keiji Oda, Koji Kuraoka, Satoshi Kodaira, Hisashi Kitamura, YAMAUCHI TOMOYA
    29th Workshop on Solid State Nuclear Track Detectors, Mar. 2015, Japanese, Tsuruga Campus, Fukui University, Domestic conference
    Oral presentation

  • Quantum yields for loss of carbonate ester bonds in polymeric nuclear track detectors under 222 nm UV radiations
    YAMAUCHI TOMOYA, Atsushi Sakamoto, Tamon Kusumoto, Yutaka Mori, Masato Kanasaki, Keiji Oda
    26th International Conference on Nuclear Tracks in Solids, Sep. 2014, English, International Nuclear Track Society, Kobe University, Kobe University, The effects of ultraviolet (UV) photons on bisphenol-A polycarbonate (PC), polyethylene telephtalate (PET), and poly(allyl diglycol carbonate) (PADC), at a wavelength of 222 nm has been examined by means of FT-IR spectrometry, which have been applied for polymeric nuclear track detectors. The progress of photo-Fries reaction has been found in PC, as well as de-carbonyl reaction, International conference
    Poster presentation

  • On the modified structure around the latent tracks in PADC films exposed to protons and heavy ions
    Tamon Kusumoto, Yutaka Mori, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, Remi Barillon, YAMAUCHI TOMOYA
    26th International Conference on Nuclear Tracks in Solids, Sep. 2014, English, International Nuclear Track Society, Kobe University, Kobe University, A series of FT-IR measurements has been performed to understand the modified structure of latent tracks in poly(allyl diglycol carbonate) (PADC) films exposed to protons and heavy ions, He, C, Ne, Ar, Fe, Kr and Xe, in air or in vacuum. The examined stopping power ranged from 10 to 12000 keV/μm. For every examined ions, the effective track core radius for CH2 group is almost eq, International conference
    Oral presentation

  • Feature of radiation damage formed along the nuclear tracks in bisphenol A polycarbonate films
    Ryunosuke Ikenaga, Yutaka Mori, Tamon Kusumoto, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Hisashi Kitamura, YAMAUCHI TOMOYA
    26th International Conference on Nuclear Tracks in Solids, Sep. 2014, English, International Nuclear Track Society, Kobe University, Kobe University, A series of FT-IR spectrometric studies has been carried out on bisphenol A polycarbonate (PC) films exposed to protons and heavy ions, as well as low LET radiations like gamma rays from an intense Co-60 source and high energy electron beams. It has been confirmed that the radiation chemical yields, G value, for the loss of carbonate ester bonds in PC hardly depends on the stop, International conference
    Poster presentation

  • A study on polyimide films as an etched track detector with higher registration threshold
    Shuichiro Yasuda, Yutaka Mori, Kenya Matsukawa, Tamon Kusumoto, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Hisashi Kitamura, YAMAUCHI TOMOYA
    26th International Conference on Nuclear Tracks in Solids, Sep. 2014, English, International Nuclear Track Society, Kobe University, Kobe University, It is well known that different polymeric etched track detectors have their own track registration properties. The polymeric Kapton is known for its ability to maintain excellent physical, electrical, and mechanical properties in wide temperature regions from 4 K to 673 K. It works as an etched track detector with a higher threshold for etch pit formation. In this study, the tr, International conference
    Poster presentation

  • Damage structure along heavy ion tracks in solids state nuclear track detectors
    YAMAUCHI TOMOYA
    2013 Annual Report of the Research Project with Heavy Ions at NIRS-HIMAC, Apr. 2014, Japanese, ホテルポートプラザちば, International conference
    Oral presentation

  • Response Studies of Charged Particles to the Plastics Prepared from Monomers with Different Molecular Chain Length by Micro FT-IR Spectroscopy
    Hajime Kawashima, Satoshi Jinno, Kenta Nakagawa, Nakahiro Yasuda, Kenya Matsukawa, Yutaka Mori, YAMAUCHI TOMOYA, Keiishi Kobayashi
    The 28th Workshop on Solid State Nuclear Track Detectors, Mar. 2014, Japanese, Kobe University, 固体飛跡検出器で最も感度が高いとして知られるCR-39ポリマー（poly allyl diglycol carbonate）は、1979にCartwrightらにより報告された後、個人被ばく線量計、宇宙放射線測定器などとして、放射線計測現場において広く活用されているにもかかわらず、CR-39が持つ優れた重粒子照射特性についての科学的考察は今だ十分ではない。 我々は、重イオン照射によりプラスチック内部で起こる物理的、化学的反応課程、及びその結果形成される潜在飛跡損傷メカニズムの解明のために、質量分析法（MS）や電子スピン共鳴法（ESR）を用いて検討を重ね、一部の結果を報告した(Kodaira et al., Rad. Meas. 2012)。一方では、CR-39に似た新材料の合成も試みており、昨年の本研究会において、合成した３種類のポリマーのうちの２種, Domestic conference
    Oral presentation

  • Laser-driven proton acceleration with a thin-foil target
    Akito Sagisaka, Mamiko Nishiuchi, Alexander S. Pirozhkov, Kouichi Ogura, Hironao Sakaki, Shota Maeda, Tatiana A. Pikuz, Anatoly Ya. Faenov, Yuji Fukuda, Masato Kanasaki, Kenya Matsukawa, Masaki Kando, Hiromitsu Kiriyama, Hajime Okada, Shuhei Kanazawa, Shuji Kondo, Takuya Shimomura, Yoshiki Nakai, Manabu Tanoue, Seiji Sakai, Yukinobu Watanabe, YAMAUCHI TOMOYA, Timur Zh. Esirkepov, Sergei V. Bulanov, Kiminori Kondo
    The 61st JSPS Spring Meting 2014, Mar. 2014, Japanese, Aoyama Gakuin University, 日本原子力研究開発機構設置のチタンサファイアレーザー（J-KAREN）を用いて、薄膜ターゲットに照射した。レーザーのパルス幅は半値全幅で~40 fs であった。レーザーパルスは軸外し放物面鏡により集光され、集光強度は~1x1021 W/cm2 と見積もられる。ターゲット裏面方向に発生する陽子をCR-39 とRCF の組み合わせにより測定した。また、レーザーとアルミ薄膜ターゲットとの相互作用を調べるため、レーザー反射方向に発生する高次高調波（2 次〜4 次）を、分光器によって測定した。アルミ薄膜ターゲットを用いた場合、陽子の最大エネルギーは 40 MeV 程度に達した, Domestic conference
    Oral presentation

  • A response study on PC detectors for energetic heavy ions
    Hiroaki Nakamura, Yutaka Mori, Kenya Matsukawa, Tamon Kusumoto, Keiji ODA, Satoshi Kodaira, Teruaki Konishi, Hisashi Kitamura, YAMAUCHI TOMOYA
    The 28th Workshop on Solid State Nuclear Track Detectors, Mar. 2014, Japanese, Kobe University, 近年、潜在飛跡の構造に関してはポリカーボネート（PC）に対する赤外線分光法を利用した研究が体系的に行われており、高分子鎖を構成しているカーボネートエステル結合が選択的に損傷を受けていることが明らかになっている。次の課題は、潜在飛跡の構造や径方向サイズとそれに沿ったエッチング速度あるいは検出感度との関係を明らかにすることである。本研究では、プロトンや重イオンを照射したPC検出器の検出感度をエッチピット径から決定した。, Domestic conference
    Oral presentation

  • A study on Polyethylene terephthalate as an etch track detector with higher registration threshold
    Kotaro Ishima, Kenya Matsukawa, Tamon Kusumoto, Akira Tao, Yutaka Mori, Hisashi Kitamura, Satoshi Kodaira, Teruaki Konishi, Keiji Oda, YAMAUCHI TOMOYA
    The 28th Workshop on Solid State Nuclear Track Detectors, Mar. 2014, Japanese, Kobe University, 宇宙放射線計測やレーザー駆動粒子線加速実験といった種々の放射線からなる混成場における計測において感度の異なる複数の検出器を活用する必要がある。ポリエチレンテレフタレート(PET)は決して感度の高い検出器ではないが、プロトンやアルファ線など比較的に軽いイオンに対する感度を持たないために、これらとより重たい重イオンが同時に入射してくるようなケースでは、重イオンのみを検出することが可能である。そこで本研究では現在入手可能なPET材料に対して、いくつか重イオンに対する検出特性を評価した。, Domestic conference
    Oral presentation

  • Applicability of engineering plastics as etched track detectors with higher detection threshold
    Kenya Matsukawa, Yutaka Mori, Tamon Kusumoto, Keiji ODA, Satoshi Kodaira, Hisashi Kitamura, YAMAUCHI TOMOYA
    The 28th Workshop on Solid State Nuclear Track Detectors, Mar. 2014, Japanese, Kobe University, これまでにポリアリルジグリコールカーボネート（PADC）を始めとする種々のポリマーに対し、重イオンやガンマ線照射による放射線影響が体系的に研究されてきた。本研究では耐放射線性に優れるいくつかのエンジニアリングプラスチックに注目し、高閾値固体飛跡検出器としての応用可能性について評価した。エッチピット形成感度、及び重イオン照射効果について評価した結果、ポリイミド樹脂上にエッチピットが生成するためには隣接する2ヶ所以上のジフェニルエーテル結合が必要であることがわかった。, Domestic conference
    Oral presentation

  • A study on polyethylene terephthalate as an etched track detector with higher detection threshold-Ⅱ
    Akira Tao, Yutaka Mori, Masato Kanasaki, Satoshi Kodaira, Teruaki Konishi, Keiji Oda, YAMAUCHI TOMOYA
    The 61st JSPS Spring Meting 2014, Mar. 2014, Japanese, Aoyama Gakuin University, エッチング型飛跡検出器は、プロトンや重イオンの通り道である飛跡を化学エッチング処理によって拡大し、それぞれを、顕微鏡下においてエッチピットとして観察する放射線検出器である。最も検出感度の高いCR-39 という商品名でよばれるポリアリルジグリコールカーボネート（PADC）がその代表的な検出器として知られている。感度のより高い素子を開発することは、ひとつの研究の方向性として重要であるが、ある検出閾値を有する検出器が必要とされるようなケースが生まれている。例えば、高強度レーザー駆動イオン加速実験において、電子線やX 線、プロトンからなる複雑な混合場において重イオンを検出する必要が生まれている。この場合、プロトンやアルファ線には感度は持たないが、CやOイオンには感度を有するようなエッチング型飛跡検出器の適用が期待されている。Fig. 1 はポリエチレンテレフ, Domestic conference
    Oral presentation

  • Radiation damage along ion tracks in
    YAMAUCHI TOMOYA
    平成25年度大阪大学産業科学研究所附属量子ビーム科学研究施設成果報告会, Mar. 2014, Japanese, Osaka University, Domestic conference
    Oral presentation

  • Spatial and energy distributions of MeV ions in the interaction of intense laser pulses with cluster-gas targets
    Masato Kanasaki, Satoshi Jinno, Hironao Sakaki, Mamiko Nishiuchi, Kiminori Kondo, Keiji Oda, YAMAUCHI TOMOYA, Ryutaro Matsui, Yasuaki Kishimoto, D. Doria, M. Borghesi, Yuji Fukuda
    The 28th Workshop on Solid State Nuclear Track Detectors, Mar. 2014, Japanese, Kobe University, クラスターターゲットを用いたレーザー駆動イオン加速実験においては、クーロン爆発によって等方的に発生する低エネルギー成分（< 数MeV/n）に加え、磁気双極子渦の運動によってレーザー進行方向に加速される高エネルギー成分（>> 数MeV/n）が存在する。本研究では、比較的低エネルギーのイオンについて、その空間分布とエネルギー分布の測定を試み、加速機構について検討した。, Domestic conference
    Oral presentation

  • A study on polyimide as an etch track detection with higher registration threshold
    Shuichiro Yasuda, Yutaka Mori, Kenya Matsukawa, Tamon Kusumoto, Keiji ODA, Satoshi Kodaira, Teruaki Konishi, Hisashi Kitamura, YAMAUCHI TOMOYA
    The 28th Workshop on Solid State Nuclear Track Detectors, Mar. 2014, Japanese, Kobe University, これまでにポリイミド樹脂に対し重イオンを照射した研究がいくつか報告されている。本研究ではポリイミド樹脂であるカプトンを用いて、その主鎖を担うイミド結合、ジフェニルエーテル結合のモル吸光係数を算出した。またAl, Si, Ar, Fe, Kr, Xe イオンを照射して感度及び検出閾値の再評価に取り組んだ。検出閾値では先行する研究と比較して差異は認められなかったが、感度では明確な差異が認められた。これはエッチング処理時の溶液量の違いによる流れの差異に起因すると判断した。, Domestic conference
    Oral presentation

  • Feature of injury from radiation which is formed in polycarbonate
    Ryunosuke Ikenaga, Yutaka Mori, Kenya Matsukawa, Tamon Kusumoto, Keiji ODA, Satoshi Kodaira, Teruaki Konishi, Hisashi Kitamura, YAMAUCHI TOMOYA
    The 28th Workshop on Solid State Nuclear Track Detectors, Mar. 2014, Japanese, Kobe University, PCの潜在飛跡機構の解明のため、我々はこれまでに重イオン照射、ガンマ線照射などについて系統的な研究を進めてきた。しかしPC中に形成されるイオントラックの構造と形成機構をより理解するためには、低エネルギー電子の影響を排除した実験が必要となっている。本研究ではPCに28 MeVの電子線を照射し顕微赤外分光分析によって損傷を評価した。また、重イオントラックに沿った化学構造変化についても顕微赤外分光分析を行った。代表的な官能基について、照射前後の吸光度の変化から放射線化学収率を含むいくつかの化学的損傷パラメータを算出し、損傷を評価した。, Domestic conference
    Oral presentation

  • Structural modification along nuclear tracks of proton and heavy ions in poly(allyl diglycol carbonate) detectors
    Yuri Matai, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, Teruaki Konishi, Sachiko Toji, Yoshihide Honda, YAMAUCHI TOMOYA
    The 28th Workshop on Solid State Nuclear Track Detectors, Mar. 2014, Japanese, Kobe University, 本研究ではポリアリルジグリコールカーボネート（PADC）薄膜に陽子及び重イオンを照射し、そのイオントラック構造を赤外線分光法で求めた。対象としたイオン種はプロトンとHeからXeイオンまでの重イオンであった。阻止能域で言えば10 keV/µmから12,000 keV/μmの範囲を本研究はカバーしている。PADC中の代表的な官能基であるカーボネートエステル結合及びエーテル結合について、実効的トラックコア半径と損傷密度、放射線化学収率（G値）を評価した。PADCでは同一のイオン種では阻止能が低いほどG値が高いという特異な傾向が、分析した総てのイオン種で確認された。, Domestic conference
    Invited oral presentation

  • A spatial distribution of MeV ions in the interaction
    Masato Kanasaki, Satoshi Jinno, Hironao Sakaki, Mamiko Nishiuchi, Kiminori Kondo, Keiji Oda, YAMAUCHI TOMOYA, Ryutarou Matsui, Yasuaki Kishimoto, D. Doria, M. Borghesu, Yuji Fukuda
    The 61st JSPS Spring Meting 2014, Mar. 2014, Japanese, Aoyama Gakuin University, クラスターターゲットを用いたレーザー駆動イオン加速実験では、固体ターゲットの場合に比べてイオンの加速効率が高く、最大で50 MeV/n のHe イオンの加速を達成している1)。クラスターターゲットを用いた場合、クーロン爆発によって等方的に発生する比較的低エネルギーの成分（< 数MeV/n）のものに加え、磁気双極子渦の運動によってレーザー進行方向に加速される高エネルギー成分（>> 数MeV/n）のものが存在する。, Domestic conference
    Oral presentation

  • FT-IR spectroscopic study on heavy ion tracks in PADC detectors
    Tamon Kusumoto, Yutaka Mori, Masato Kanasaki, Yuri Matai, Keiji ODA, Satoshi Kodaira, Hisashi Kitamura, YAMAUCHI TOMOYA
    The 28th Workshop on Solid State Nuclear Track Detectors, Mar. 2014, Japanese, Kobe University, ポリアリルジグリコールカーボネート（PADC）検出器は最も感度の高い飛跡検出器として知られている。 PADC は、その繰り返し構造の中央にエーテル基があり2 つのカーボネートエステル基がエチル基を介して対称の位置に存在する。それらの外側には重合時に生まれたポリエチレン状の3 次元ネットワークが広がっており、それらは他の繰り返し構造と結びついている。本研究ではエチル基等を構成するCH2 基に着目し、赤外線分光分析を用いて化学的損傷パラメータを評価した。得られた結果は、先に求めているエーテル基やカーボネートエステル基のものと比較検討した。, Domestic conference
    Oral presentation

  • FT-IR spectroscopic study on heavy ion tracks in PADC detectors
    Tamon Kusumoto, Yutaka Mori, Masato Kanasaki, Keiji ODA, Teruaki Konishi, Satoshi Kodaira, Hisashi Kitamura, YAMAUCHI TOMOYA
    The 61st JSPS Spring Meting 2014, Mar. 2014, Japanese, Aoyama Gakuin University, ポリアリルジグリコールカーボネート(PADC)出器は、最も感度の高いエッチング型飛跡検出器として知られている。我々は、PADC 中に形成されるイオントラック(潜在飛跡)の構造を理解するためにその薄膜に対する赤外線分光分析を利用した体系的な分析を進めてきており、その高分子鎖中のエーテル基やカーボネートエステル基が損傷を受けやすく、トラックエッチング速度の関係する新たな端点としてヒドロキシル基が生成していることを明らかにしてきた。PADC は熱硬化性樹脂であるが、その繰り返し構造の中央にはエーテル基があり2 つのカーボネートエステル基がエチル基を介して対称の位置に置かれている。それらの外側には重合時に生まれたポリエチレン状の3 次元ネットワークが広がっており、それらは他の繰り返し構造と結びついている。本研究ではエチル基等を構成するCH2基に着目し、化学的, Domestic conference
    Oral presentation

  • A role of the hydroxyl group formed around nuclear tracks in PADC detectors
    Yuri Matai, Masato Kanasaki, Yutaka Mori, Keiji ODA, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda, YAMAUCHI TOMOYA
    The 28th Workshop on Solid State Nuclear Track Detectors, Mar. 2014, Japanese, Kobe University, プロトン及び重イオンを照射したPADC中では新たな端点としてヒドロキシル基が生成していることが確認されており、その周辺に水が集まってきていると考えられている。本研究では赤外分光法によりイオントラック内に形成されるヒドロキシル基を定量評価した。また、水のみを評価するカール・フィッシャー電量滴定法に着手し重イオン照射後のPADC中に水が存在することを確認した。照射した試料を潜在飛跡が失われる程度の極短時間エッチングすると照射前と同程度までヒドロキシル基が減少し、そこから推定されたトラックエッチング速度は顕微サイズで得られたそれとオーダーで等しくなった。, Domestic conference
    Oral presentation

  • Identification of Cs-137 and Sr-90 (Y-90) using imaging plate
    OHASHI KAI, TAKAHIRO NAKAYAMA, YAMAUCHI TOMOYA, ODA KEIJI
    9th Inrternational Workshop on Ionizing Radiation Monitoring, Dec. 2013, English, Oarai, Japan, International conference
    Poster presentation

  • イメージングプレートを用いたCs-137とSr-90(Y-90)の識別
    OHASHI KAI, NAKAYAMA TAKAHIRO, YAMAUCHI TOMOYA, ODA KEIJI
    日本放射線安全管理学会, Nov. 2013, Japanese, 北海道大学学術交流会館, Domestic conference
    Oral presentation

  • A response study on PADC detectors for energetic heavy ions
    Tamon Kusumoto, Yutaka Mori, Keiji Oda, Teruaki Konishi, Satoshi Kodaira, Hisashi Kitamura, Nakahiro Yasuda, YAMAUCHI TOMOYA
    The 74th JSAP Autumn Meeting, 2013, Sep. 2013, Japanese, Kyotanabe Campus, Doshisha University, Domestic conference
    Oral presentation

  • A study on polyethylene terephthalate as an etched track detector with higher detection threshold
    Akira Tao, Yutaka Mori, Satoshi Kodaira, Teruaki Konishi, Keiji ODA, YAMAUCHI TOMOYA
    The 74th JSAP Autumn Meeting, 2013, Sep. 2013, Japanese, Kyotanabe Campus, Doshisha University, Domestic conference
    Oral presentation

  • A study on the heavy ion track in polyimide films
    Kenya Matsukawa, Yutaka Mori, Keiji Oda, Teruaki Konishi, Satoshi Kodaira, Hisashi Kitamura, YAMAUCHI TOMOYA
    The 74th JSAP Autumn Meeting, 2013, Sep. 2013, Japanese, Kyotanabe Campus, Doshisha University, Domestic conference
    Oral presentation

  • A quantitative evaluation of H2O around the nuclear tracks in PADC
    Yuri Matai, Masato Kanasaki, Yuri Matai, Keiji ODA, Satoshi Kodaira, Teruaki Konishi, YAMAUCHI TOMOYA
    The 74th JSAP Autumn Meeting, 2013, Sep. 2013, Japanese, Kyotanabe Campus, Doshisha University, Domestic conference
    Oral presentation

  • A diagnosis method of laser-accelerated protons using CR-39 in a field contaminated by photo-neutrons
    Masato Kanasaki, Yuji Fukuda, Hironao Sakaki, Akifumi Yogo, Satoshi Jinno, Mamiko Nishiuchi, Atsuto Hattori, Kenya Matsukawa, Kiminori Kondo, Keiji Oda, YAMAUCHI TOMOYA
    The Eighth International Conference on Inertial Fusion Science and Applications, Sep. 2013, English, Nara, Japan, International conference
    Poster presentation

  • イメージングプレートを用いたCs-137とSr-90(Y-90)の識別
    OHASHI KAI, ODA KEIJI, YAMAUCHI TOMOYA
    日本保健物理学会第46回研究発表会, Jun. 2013, Japanese, 日本保健物理学会, ホテルポートプラザちば、千葉市, Domestic conference
    Oral presentation

  • Damage structure along heavy ion tracks in solids state nuclear track detectors
    YAMAUCHI TOMOYA
    平成24年度HIMAC共同利用研究成果発表会, Apr. 2013, Japanese, ホテルポートプラザちば, International conference
    Oral presentation

  • Reaponse studies on PADC detectors irradiated by heavy ions under vacuum
    Atsuto Hattori, Masato Kanasaki, Yuji Fukuda, Hironao Sakaki, Akifumi Yogo, Satoshi Jinno, Toshihiko Hori, Satoshi Kurashima, Tomihiro Kamiya, Kiminori Kondo, Keiji Oda, YAMAUCHI TOMOYA
    27th Workshop on Solids State Nuclear Track Detectors, Mar. 2013, Japanese, Kobe University, PADC飛跡検出器はその潜在飛跡形成に関する研究が進められる一方で、様々な分野で使用されている。今後より一層の高精度なイオン計測をするためには照射環境が検出感度に与える影響についても精査する必要がある。特にレーザー駆動粒子加速実験に注目した時に、試料は真空中に保持されているため、その真空が与える影響を無視することはできない。そこで本実験では、今まで実験がなされていなかった重イオンに対する真空効果の影響について調べた。その結果、重イオンに対する真空効果の影響をはじめて確認することができ、真空保持時間に依存した検出器の応答特性を評価した。, Domestic conference
    Oral presentation

  • ESR measurements of radicals formed in CR-39 by the irradiation of heavy ions
    Hajime Kawashima, Satoshi Kodaira, Ryou Kawano, Keisuke Hanaoka, Teruaki Konishi, Hisashi Kitamura, Yukio Uchihori, Nobuyuki Hasebe, Masakazu Washio, Yoshimsa Hama, Yutaka Mori, YAMAUCHI TOMOYA
    27th Workshop on Solids State Nuclear Track Detectors, Mar. 2013, Japanese, Kobe University, 放射線計測分野においてCR-39プラスチックは広く利用されているにも関わらず、重粒子線照射によってCR-39内部でおこる化学反応とエッチング操作後に観察されるエッチピットの大きさや形状との関連性は未解決のままである。我々は、CR-39における重粒子線飛跡生成メカニズムの解明を目標に、①重粒子線照射時にCR-39内部で起きるラジカル反応とその生成物の検出、及び、②エッチピット形成の基となる放射線損傷由来の分子フラグメントの検出を行い、エッチピットのLET依存性の関連性を包括的に解明し、CR-39の持つ高感度特異性の要因分析を進めている。今回の講演では、イオンビームを照射したときに生成するラジカルの測定を電子スピン共鳴法により行い、重イオン特有の照射効果について発表する。, Domestic conference
    Oral presentation

  • A response study on PADC detectors for energetic heavy ions
    Tamon Kusumoto, Hassan M. Nabil, Atsuto Hattori, Yutaka Mori, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, Nakahiro Yasuda, YAMAUCHI TOMOYA
    27th Workshop on Solids State Nuclear Track Detectors, Mar. 2013, Japanese, Kobe University, ポリアリル・ジグルコール・カーボネート（PADC）検出器は、最も感度の高いエッチング型飛跡検出器として知られており、近年潜在飛跡の構造に関してはPADC薄膜に対する赤外線分光法を利用した研究が体系的に行われている。次の課題は、潜在飛跡の構造や径方向サイズとそれに沿ったエッチング速度あるいは検出感度との関係を明らかにすることである。本研究では、プロトンや重イオンを照射したPADC検出器の検出感度を、エッチピット径やエッチピットの先端角、トラック長さから決定した。また、感度の限定的エネルギー損失(REL)依存性を求め、先行する研究との比較をおこなった。, Domestic conference
    Oral presentation

  • Applicability of the Polyimide Films as a High Threshold Etched Track Detector
    Kenya Matsukawa, Yutaka Mori, Keiji Oda, Teruaki Konishi, Satoshi Kodaira, Hisashi Kitamura, Nakahiro Yasuda, YAMAUCHI TOMOYA
    The 60th JSPS spring Meeting, 2013, Mar. 2013, Japanese, Japan Society of Applied Physics, Kanagawa Institute of Technology, Domestic conference
    Oral presentation

  • A study on polyethylene terephthalate as an etch track detection with higher registration threshold
    Akira Tao, Atsuto Hattori, Yutaka Mori, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda, YAMAUCHI TOMOYA
    27th Workshop on Solids State Nuclear Track Detectors, Mar. 2013, Japanese, Kobe University, 宇宙放射線計測やレーザー駆動粒子線加速実験といった種々の放射線からなる混成場においては、感度の異なる複数の固体飛跡検出器を効果的に活用する必要がある。ポリエチレン・テレフタレート（PET）は決して感度の高いエッチング型検出器ではないが、プロトンやα線に対する感度が無いために、これらとより重たい重イオンが同時に入射してくるようなケースでは、その重イオンのみを検出することが可能である。そこで本研究では現在入手可能なPET材料に対して、複数の重イオンに対する検出特性を評価した。, Domestic conference
    Oral presentation

  • Radiation chemical yields for losses of the ether and carbonate ester bonds in PADC detectors exposed to high energy heavy ions
    Yutaka Mori, Masato Kanasaki, Atsuto Hattori, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, Teruaki Konishi, Nakahiro Yasuda, Sachiko Tojo, Yoshihid Honda, YAMAUCHI TOMOYA
    27th Workshop on Solids State Nuclear Track Detectors, Mar. 2013, Japanese, Kobe University, これまでPADC薄膜に6 MeV/n以下の重イオン照射し、赤外分光を用いて高分子飛跡材料中のイオントラック構造分析についての研究を進めてきた。特にPADC中のカルボニル基の放射線化学収率（G値）はプロトン照射によるが最も大きい値であった。そこでコバルト60を用いたガンマー線照射を実施したところ、プロトンのG値よりも大きな値を得たことから、より阻止能が低いほどG値が大きくなるという結果が確認された。そこで本研究ではこれまでよりも高エネルギーのC (1.10, 1.25 and 1.39 GeV)、 Fe (20.8 and 22.8 GeV)、Xe (10 GeV)イオンを照射し化学的損傷パラメータを求めた。, Domestic conference
    Oral presentation

  • The diagnosis method for laser-accelerated high energy ion beams using backscattered particles
    Masato Kanasaki, Yuji Fukuda, Hironao Sakaki, Akifumi Yogo, Satoshi Jinno, Satoshi Kurashima, Tomihiro Kamiya, Kiminori Kondo, Keiji Oda, YAMAUCHI TOMOYA
    27, Mar. 2013, Japanese, Kobe University, CR-39を用いた高強度高エネルギーイオンビームに対する簡易診断法を開発した。適切な散乱体の上に重ねたCR-39に対して、加速器にてHeイオンをエネルギー及びフルエンスともに検出閾値以上の条件で照射した。多段階エッチング法により解析を行った結果、CR-39の裏面には後方散乱粒子によってエッチピットが形成されていることが明らかとなった。また、裏面のエッチピットの分布すなわち後方散乱粒子を利用して高エネルギーイオンビームの診断が可能であることを確認した。この手法を、クラスターターゲットを用いたレーザー駆動イオン加速実験に適用し、50 MeV/nのHeイオンの検出に成功した。, Domestic conference
    Oral presentation

  • Step-like modification of ion tracks around the detection threshold in PADC
    Yoshitaka Trarashita, Tamon Kusumoto, Keiji Oda, Masato Kanasaki, Satoshi Kodaira, YAMAUCHI TOMOYA
    The 64th JSAP Spring Meeting 2017, Mar. 2013, Japanese, Pacifico Yokohama, 固体飛跡検出器の中で最も感度が高く、中性子やラドン計測にも使用可能な検出器としてポリ アリルジグリコールカーボネート(PADC)がある。PADC は高強度電磁パルス下で電子線や X 線に感度を持たず、特定のイオンのみを弁別して測定することが可能なのでレーザー駆動イオン 加速器実験にも利用される。しかし、検出感度を決定する構造上の特性についてまだ未解明な部 分が多い。そのため、本研究ではPADCのプロトンに対する検出閾値である17 eV/nm付近のH 及び He イオン照射を行い、その赤外線分光分析から構造上の特性を解明することを目的とした。 化学的損傷パラメータとしては、トラック単位距離あたりの官能基の損傷数である損傷密度、官 能基が失われている径方向の広がりを示す実効的トラックコア半径、放射線化学収率(G 値)を 利用し、これら 3 つの化学的損傷, Domestic conference
    Oral presentation

  • A study on the effect of photo-neutrons on laser-accelerated ion beam diagnostics
    Masato Kanasaki, Yuji Fukuda, Hironao Sakaki, Akifumi Yogo, Satoshi Jinno, Mamiko Nishiuchi, Atsuto Hattori, Kenya Matsukawa, Kiminori Kondo, Keiji Oda, YAMAUCHI TOMOYA
    The 60th JSPS spring Meeting, 2013, Mar. 2013, Japanese, Japan Society of Applied Physics, Kanagawa Institute of Technology, Domestic conference
    Oral presentation

  • A study on the heavy ion track in polyimide
    Kenya Matsukawa, Atsuto Hattori, Keiji Oda, Teruaki Konishi, Satoshi Kodaira, Hisashi Kitamura, Nakahiro Yasuda, YAMAUCHI TOMOYA
    27th Workshop on Solids State Nuclear Track Detectors, Mar. 2013, Japanese, Kobe University, これまでにポリアリル・ジグリコール・カーボネート（PADC）を始めとする種々のポリマーに対し、重イオンやガンマ線照射による放射線影響が体系的に研究されてきた。それらのエッチピットの生成有無に関しては隣り合う2つのC-O結合の損傷が関係していると考えられている。本研究では、ポリイミド樹脂であるKaptonのエッチピット生成に寄与する損傷構造の解明と、検出閾値の推定に取り組んだ。検出閾値の推定にあたり、阻止能を用いて閾値を説明することは困難であることがわかった。発表では、複数の物理パラメータの適用可能性について議論する。, Domestic conference
    Oral presentation

  • An evaluation of photo-neutrons on laser-driven ion acceleration experiments with cluster-gas target
    Masato Kanasaki, Yuji Fukuda, Hironao Sakaki, Akifumi Yogo, Satoshi Jinno, Mamiko Nishiuchi, Kiminori Kondo, Keiji Oda, YAMAUCHI TOMOYA
    27th Workshop on Solids State Nuclear Track Detectors, Mar. 2013, Japanese, Kobe University, クラスターターゲットを用いたレーザー駆動イオン加速実験では、高エネルギーイオンが発生すると同時に、最大で300 MeV程度の高エネルギー電子線の発生が確認されている。このような電子線は実験装置を構成する物質中に入射すると制動放射によりエネルギーの高い光子を放出し、さらに、発生した光子と物質中の原子核との光核反応により中性子を発生する。そこで本研究では、CR-39を用いたレーザー駆動イオンビーム診断においてノイズとなり得る光中性子の影響を、モンテカルロシミュレーションおよび3He検出器による実測を組み合わせて評価した。, Domestic conference
    Oral presentation

  • A quantitative evaluation of H2O near the nuclear tracks in PADC
    Yuri Matai, Masato Kanasaki, Yutaka Mori, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda, YAMAUCHI TOMOYA
    27th Workshop on Solids State Nuclear Track Detectors, Mar. 2013, Japanese, Kobe University, プロトン及び重イオンを照射したPADC中では新たな端点としてヒドロキシル基が生成していることが知られるようになってきた。本研究ではトラック近傍に集まる水を定量評価する手段として従来の赤外分光法に加え、カールフィッシャー電量滴定法を用いた実験に着手した。未照射のPADC中に存在する水の量は試料厚さに比例することがカールフィッシャー法においても確認できた。得られた水分測定値を赤外分光法により得られたヒドロキシル基周辺の吸光度と比較しPADC中における水の挙動を定量評価する手段として両者が補間的な関係になり得るかどうかを調べた。, Domestic conference
    Oral presentation

  • Behavior of water near the nuclear tracks in PADC Ⅱ
    Yuri Matai, Masato Kanasaki, Yutaka Mori, YAMAUCHI TOMOYA, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda
    The 60th JSPS spring Meeting, 2013, Mar. 2013, Japanese, Japan Society of Applied Physics, Kanagawa Institute of Technology, Domestic conference
    Oral presentation

  • On the mechanism of sensitization of poly(allyl diglycol carbonate) track detector by carbon dioxide treatment
    Nabil M. Hassan, Yuri Matai, Tamon Kusumoto, Yutaka Mori, Masato Kanasaki, Keiji Oda, Hisahi Kitamura, Teruaki Konishi, Satoshi Kodaira, Nakahiro Yasuda, Tomoya Yamauchi
    27th Workshop on Solids State Nuclear Track Detectors, Mar. 2013, English, Kobe University, Sensitization effect of poly(allyl diglycol carbonate), PADC, etched track detectors by carbon dioxide treatments with 0.6 MPa is confirmed for proton and He, C, and Fe ions, at the stopping powers ranging from 10 to 600 keV/μm. Based on the FT-IR study for the PADC films kept at room temperature and at elevated temperatures, the diffusion coefficient of carbon dioxide, D, is d, Domestic conference
    Invited oral presentation

  • Diagnostics of laser-accelerated ion beams using CR-39 and ZnS(Ag) fluorescent screen
    Masato Kanasaki, Yuji Fukuda, Hironao Sakaki, Akifumi Yogo, Satoshi Jinno, Mamiko Nishiuchi, Koichi Ogura, Takashi Akagi, Kiminori Kondo, Keiji Oda, YAMAUCHI TOMOYA
    27, Mar. 2013, Japanese, Kobe University, 高強度レーザーによる固体ターゲットを用いたレーザー駆動イオン加速実験では、最大で40 MeVのプロトンの発生が確認されている。イオン計測にはCR-39 が広く利用されているが、最大エネルギーの決定精度については、様々な問題点が残されていた。本研究では積層したCR-39 を用い、レーザーによって加速されたイオンの計測を行なった。エッチピットが確認された最終層のCR-39 に対して、多段階エッチング法を適用することで、最終層内での飛程を算出し、最大エネルギーをE=0.1 MeV という高い精度で決定した。また、ZnS(Ag)蛍光体を用いたオンライン型検出器による計測も行った。, Domestic conference
    Oral presentation

  • Latent tracks in polymeric etched track detectors
    Tomoya Yamauchi
    13th Advanced Photon Research Symposium, Nov. 2012, English, Quantum Beam Science Directorate & Kansai Ohoton Science Institute, Kansai Photon Science Institute (Kizu), International conference
    [Invited]
    Invited oral presentation

  • Threshold of Etchable Track Formation and Chemical Damage Parameters in PI, PET, PC, and PADC Films at the Stopping Powers Ranging from 10 to 12,000 keV/µm
    Kenya Matsukawa, Yutaka Mori, Masato Kanasaki, Atsuto Hattori, Yuri Matai, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, Teruaki Konishi, Nakahiro Yasuda, Sachiko Tojo, Yoshihide Honda, Remi Barillon, Tomoya Yamauchi
    The 8th International Symposium on Swift Heavy Ions in Matter, Oct. 2012, English, Kyoto University, International conference
    Poster presentation

  • Greater Radiation Chemical Yields for Losses of the Ether and Carbonate Ester Bonds in PADC at the Lower Stopping Powers
    Yutaka Mori, Tomoya Yamauchi, Masato Kanasaki, Atsuto Hattori, Yuri Matai, Kenya Matsukawa, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, Teruaki Konishi, Nakahiro Yasuda, Sachiko Tojo, Yoshihide Honda, Remi Barillom
    The 8th International Symposium on Swift Heavy Ions in Matter, Oct. 2012, English, Kyoto University, International conference
    Poster presentation

  • Design of a wide energy range stacked CR-39 detector diminishing contaminant photo-neutrons using Monte Carlo particle transport simulations
    Masato Kanasaki, Yuji Fukuda, Hironao Sakaki, Akifumi Yogo, Satoshi Jinno, Mamiko Nishiuchi, Atsuto Hattori, Kenya Matsukawa, Kiminori Kondo, Keiji Oda, YAMAUCHI TOMOYA
    International Symposium on Ultrafast Intense Laser Science 11, Oct. 2012, English, Jeju, Korea, International conference
    Poster presentation

  • Radiation chemical yields for losses of the ether and carbonate ester bonds in PADC detectors exposed to high energy heavy ions
    Yuri Matai, Masato Kanasaki, Atsuto Hattori, Keiji Oda, Satoshi Kodaira, Hisashi Kitamura, Teruaki Konishi, Nakahiro Yasuda, Sachiko Tojo, Yoshihid Honda, Tomoya Yamauchi
    The 73rd Autumn Meeting of the Japan Society of Applied Physics, Sep. 2012, Japanese, 応用物理学会, Ehime University, Domestic conference
    Oral presentation

  • Response studies on PADC detectors irradiated by heavy ions under vacuum
    Atsuto Hattori, Masato Kanasaki, Yuji Fukuda, Hironao Sakaki, Akifumi Yogo, Satoshi Ginno, Toshihiko Hori, Satoshi Kurashima, Tomihiro Kamiya, Kiminori Kondo, Keiji Oda, Tomoya Yamauchi
    The 73rd Autumn Meeting of the Japan Society of Applied Physics, Sep. 2012, Japanese, 応用物理学会, Ehime University, Domestic conference
    Oral presentation

  • Infrared spectroscopic study on heavy ion-irradiated polyalamide films
    Kenya Matsukawa, Yutaka Mori, Keiji Oda, Teruaki Konishi, Satoshi Kodaira, Hisashi Kitamura, Nakahiro Yasuda, Tomoya Yamauchi
    The 73rd Autumn Meeting of the Japan Society of Applied Physics, Sep. 2012, Japanese, 応用物理学会, Ehime University, Domestic conference
    Oral presentation

  • レーザー駆動イオンビーム・オンラインイメージング解析用ZnS(Ag)蛍光膜の発光応答特性評価
    Masato Kanasaki, Hironao Sakaki, Yuji Fukuda, Akifumi Yogo, Satoshi Jinno, Kiminori Kondo, Suguru Akagi, Atsuto Hattori, Kenya Matsukawa, Keiji Oda, Tomoya Yamauchi
    The 73rd Autumn Meeting of the Japan Society of Applied Physics, Sep. 2012, Japanese, 応用物理学会, Ehime University, Domestic conference
    Oral presentation

  • Behavior of water near the nuclear tracks in PADC
    Yuri Matai, Masato Kanasaki, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda
    The 73rd Autumn Meeting of the Japan Society of Applied Physics, Sep. 2012, Japanese, 応用物理学会, Ehime University, Domestic conference
    Oral presentation

  • Damage structure along heavy ion tracks in solid state nuclear track detectors
    山内 知也
    H23年度HIMAC共同利用成果発表会, Apr. 2012, Japanese, 放射線医学総合研究所, ホテルポートプラザちば, International conference
    Oral presentation

  • Sensitization of PADC detectors by carbon dioxide treatment
    Hiroaki Fukao, Masato Kanasaki, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    The 59th Spring Meeting, 2010 The Japan Society of Applied Physics and Related Societies, Mar. 2012, Japanese, Waseda University, Domestic conference
    Oral presentation

  • Sensitization of PADC detectors by carbon dioxide treatment
    Hiroaki Fukao, Masato Kanasaki, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    26th Workshop on Solid State Nuclear Track Detectors, Mar. 2012, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, Kobe University, Domestic conference
    Oral presentation

  • Studies of track formation mechanism in CR-39 plastics by heavy ion irradiation using mass spectrometric and electron spin resonance measurements
    Hajime Kawashima, Satoshi Kodaira, Nakahiro Yasuda, Teruaki Konishi, Hisashi Kitamura, Kenta Nakagawa, Nobuyuki Hasebe, Washio Masakazu, Yoshimasa Hama, Yutaka Mori, Tomoya Yamauchi
    26th Workshop on Solid State Nuclear Track Detectors, Mar. 2012, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, Kobe University, Domestic conference
    Oral presentation

  • A study on heavy-ion tracks in polyimide as high threshold SSNTD materials
    Shunsuke Kaifu, Masato Kanasaki, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda
    The 59th Spring Meeting, 2010 The Japan Society of Applied Physics and Related Societies, Mar. 2012, Japanese, Waseda University, Domestic conference
    Oral presentation

  • A study on heavy ion tracks in polyimide as high threshold SSNTD materials
    Shunsuke Kaifu, Masato Kanasaki, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda
    26th Workshop on Solid State Nuclear Track Detectors, Mar. 2012, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, Kobe University, Domestic conference
    Oral presentation

  • Radiation damage along ion tracks in polymeric solid state nuclear track detectors
    Tomoya Yamauchi
    平成23年度大阪大学産業科学研究所附属量子ビーム科学研究施設成果報告会, Mar. 2012, Japanese, The Institute of Scientific and Industrial Research, Osaka University, Domestic conference
    Oral presentation

  • Study on polymeric track detectors by FT-IR and Raman spectroscopy
    Kenya Matsukawa, Atsuto Hattori, Masato Kanasaki, Tomoya Yamauchi, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda
    26th Workshop on Solid State Nuclear Track Detectors, Mar. 2012, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, Kobe University, Domestic conference
    Oral presentation

  • An online measurement of laser accelerated ions with several-tens MeV by real-time Thomson parabola system
    Masato Kanasaki, Hironao Sakaki, Yuji Fukuda, Akifumi Yogo, Satoshi Jinno, Mamiko Nishiuchi, Koichi Ogura, Kiminori Kondo, Keiji Oda, Tomoya Yamauchi
    26th Workshop on Solid State Nuclear Track Detectors, Mar. 2012, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, Kobe University, Domestic conference
    Oral presentation

  • A study on the heavy ion tracks in polyethylene terephthalate
    Akira Morimoto, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda, Sachiko Toji, Yoshihide Honda
    The 59th Spring Meeting, 2010 The Japan Society of Applied Physics and Related Societies, Mar. 2012, Japanese, Waseda University, Domestic conference
    Oral presentation

  • A study on the heavy ion track in polyethylene terephthalate
    Akira Morimoto, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda, Sachiko Toji, Yoshihide Honda
    26th Workshop on Solid State Nuclear Track Detectors, Mar. 2012, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, Kobe University, Domestic conference
    Oral presentation

  • Identification of high energy ions using backscattered particles in laser-driven ion acceleration with cluster-gas target
    Yuji Fukuda, Hironao Sakaki, Masato Kanasaki, Akifumi Yogo, Satoshi Jinno, Motonobu Tampo, A. Ya. Faenov, T. A. Pikuz, Yukio Hayashi, Masaki Kando, A. S. Pirozhkov, Takuya Shimomura, Hiromitsu Kiriyama, Kondo Kiminori, S. V. Bulanov, Satoshi Kurashima, Tominori Kamiya, Keiji Oda, Tomoya Yamauchi
    26th Workshop on Solid State Nuclear Track Detectors, Mar. 2012, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, Kobe University, Domestic conference
    Oral presentation

  • Structural analysis of heavy ion tracks in PADC track detector
    Yutaka Mori, Masato Kanasaki, Tomoya Yamauchi, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda
    26th Workshop on Solid State Nuclear Track Detectors, Mar. 2012, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, Kobe University, Domestic conference
    Oral presentation

  • Behavior of water near the nuclear tracks in PADC
    Yuri Matai, Masato Kanasaki, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda
    26th Workshop on Solid State Nuclear Track Detectors, Mar. 2012, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, Kobe University, Domestic conference
    Oral presentation

  • A precise measurement of the intense laser-driven ions energy by CR-39
    Atsuto Hattori, Masato Kanasaki, Yuji Fukuda, Hironao Sakaki, Akihumi Yogo, Satoshi Ginno, Mamiko Nishiuchi, Koichi Ogura, Kiminori Kondo, Keiji Oda, Tomoya Yamauchi
    The 59th Spring Meeting, 2010 The Japan Society of Applied Physics and Related Societies, Mar. 2012, Japanese, Waseda University, Domestic conference
    Oral presentation

  • A precise measurement of the intense laser-driven protons by CR-39
    Atsuto Hattori, Masato Kanasaki, Hironao Sakaki, Yuji Fukuda, Akifumi Yogo, Satoshi Ginno, Mamiko Nishiuchi, Koich Ogura, Kiminori Kondo, Keiji Oda, Tomoya Yamauchi
    26th Workshop on Solid State Nuclear Track Detectors, Mar. 2012, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, Kobe University, Domestic conference
    Oral presentation

  • A precise measurement of the intense laser-driven proton using CR-39
    Masato Kanasaki, Yuji Fukuda, Hironao Sakaki, Satoshi Jinno, Mamiko Nishiuchi, Koichi Ogura, Kiminori Kondo, Keiji Oda, Tomoya Yamauchi
    レーザー学会学術講演会第32回年次大会, Jan. 2012, Japanese, 社団法人レーザー学会, ＴＫＰ仙台カンファレンスセンター, Domestic conference
    Oral presentation

  • Reduction of the latent track core size of C ions in PADC irradiated in vacuum
    Yutaka Mori, Tomoya Yamauchi, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda, Sachiko Tojo, Yoshihide Honda, Remi Barillon
    25th International Conference on Nuclear Tracks in Solids, Sep. 2011, English, International Nuclear Track Society, Puebura, Mexico, International conference
    Poster presentation

  • High energy components of the intense laser-driven proton beams detected by stacked CR-39
    Masato Kanasaki, Yuji Fukuda, Hironao Sakaki, Akifumi Yogo, Toshihiko Hori, Mamiko Nishiuchi, A. S. Pirozhkov, Koichi Ogura, T. Tanimoto, A. Sagisaka, Kiminori Kondo, H. Kiriyama, Takuya Shimomura, S. Kanazawa, YAMAUCHI TOMOYA
    25th International Conference on Nuclear Tracks in Solids, Sep. 2011, English, Puebla, Mexico, International conference
    Oral presentation

  • Applicability of the polyimide films as a new SSNTD material
    Tomoya Yamauchi, Shunsuke Kaifu, Yutaka Mori, Masato Kanasaki, Keiji Oda, Satoshi Kodaira, Nakahiro Yasuda, Remi Barillon
    25th International Conference on Nuclear Tracks in Solids, Sep. 2011, English, International Nuclear Track Society, Puebura, Mexico, International conference
    Oral presentation

  • Response studies on PADC detector under normal and low temperature conditions
    Atsuto Hattori, Yutaka Mori, Tomoya Yamauchi, Keiji Oda
    The 72nd Autumn Meeting of the Japan Society of Applied Physics, Aug. 2011, Japanese, 応用物理学会, Yamagata University, Domestic conference
    Oral presentation

  • Characterization of polyethylene terephthalate as an SSNTD material
    Akira Morimoto, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    The 72nd Autumn Meeting of the Japan Society of Applied Physics, Aug. 2011, Japanese, 応用物理学会, Yamagata University, Domestic conference
    Oral presentation

  • Heavy-ion irradiation effects on polyimide SSNTD materials
    Shunsuke Kaifu, Yutaka Mori, Masato Kanasaki, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    The 72nd Autumn Meeting of the Japan Society of Applied Physics, Aug. 2011, Japanese, 応用物理学会, Yamagata University, Domestic conference
    Oral presentation

  • Effects of absorbed carbon dioxide on the track etch rate in PADC
    Hiroaki Fukao, Masato Kanasaki, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    The 72nd Autumn Meeting of the Japan Society of Applied Physics, Aug. 2011, Japanese, 応用物理学会, Yamagata University, Domestic conference
    Oral presentation

  • Mass spectrometry analysis of etch products from CR-39 plastic irradiated by heavy ions
    Satoshi Kodaira, D. Nanjo, H. Kawashima, Nakahiro Yasuda, Teruaki Konishi, M. Kurano, Hisashi Kitamura, Y. Uchihori, S. Naka, S, Ota, Y. Ideguchi, N. Hasabe, Yutaka Mori, Tomoya Yamauchi
    16th International Conference on Radiation Effects in Insulators, Aug. 2011, English, Peking University, International conference
    Poster presentation

  • Dependence of track core structure on the stopping powers ranging from 10 to 12,000 keV/μm in PET, PC and PADC films
    Tomoya Yamauchi, Yutaka Mori, Akira Morimoto, Masato Kanasaki, Keiji Oda, Teruaki Konishi, Satoshi Kodaira, Nakahiro Yasuda, Sachiko Tojo, Yoshihide Honda, Remi Barillon
    16th International Conference on Radiation Effects in Insulators, Aug. 2011, English, Peking University, International conference
    Oral presentation

  • The Effect of Photo-Neutrons on Diagnostics Using CR-39 for Laser-Accelerated Ion Beam
    Masato Kanasaki, Yuji Fukuda, Hironao Sakaki, Akifumi Yogo, Satoshi Jinno, Mamiko Nishiuchi, Atsuto Hattori, Kenya Matsukawa, Kiminori Kondo, Keiji Oda, YAMAUCHI TOMOYA
    The 10th Conference on Laser and Electro-Optics Pacific Rim, Jul. 2011, English, Kyoto, International conference
    Oral presentation

  • A diagnosis of intense ion beam by CR-39 detectors analyzing the back-scattered particles
    Masato Kanasaki, Yuji Fukuda, Hironao Sakaki, M. Tampo, Kiminori Kondo, S. Kurashima, T. Kamiya, Keiji Oda, YAMAUCHI TOMOYA
    International symposium 3rd Laser-driven Relativistic Plasmas Applied to Science, Energy, Industry, and Medicine, Jun. 2011, English, Kyoto, International conference
    Oral presentation

  • Characteristics of PADC detectors with the carbon dioxide treatments
    Hiroaki Fukao, Masato Kanasaki, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    Workshop on Solid State Nuclear Track Detectors in Kobe 2011, Mar. 2011, Japanese, Kobe University, Domestic conference
    Oral presentation

  • Applicability of the polyimide films as a new SSNTD material
    Shunsuke Kaifu, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    Workshop on Solid State Nuclear Track Detectors in Kobe 2011, Mar. 2011, Japanese, Kobe University, Domestic conference
    Oral presentation

  • Applicability of the polyimide films as a new SSNTD material
    Shunsuke Kaifu, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    The 58th Spring Meeting, 2010 The Japan Society of Applied Physics and Related Societies, Mar. 2011, Japanese, 応用物理学会, Kanagawa Institute of Technology, Domestic conference
    Oral presentation

  • Characterization of high energy ion beam by using back scattered particles
    Yuji Fukuda, Hironao Sakaki, Toshihiko Hori, Motonobu Tampo, Satoshi Kurashima, Tomihiro Kamiya, Kiminori Kondo, Masato Kanasaki, Tomoya Yamauchi
    The 58th Spring Meeting, 2010 The Japan Society of Applied Physics and Related Societies, Mar. 2011, Japanese, 応用物理学会, Kanagawa Institute of Technology, Domestic conference
    Oral presentation

  • On the great life of Marie Curie
    Tomoya Yamauchi
    Workshop on Solid State Nuclear Track Detectors in Kobe 2011, Mar. 2011, Japanese, Kobe University, Domestic conference
    Invited oral presentation

  • Anomalous contact angle of water droplets on PADC detectors exposed to proton beams
    Tomoya Yamauchi, Yoshihide Honda, Sachiko Tojo, Keiji Oda, Koji Kuraoka, Yutaka Mori, Masato Kanasaki, Yusuke Maeda, Shunsuke Kaifu, Hiroaki Fukao, Akira Morimoto, Astuto Hattori, Nakahiro Yasuda, Satoshi Kodaira
    H22年度大阪大学産業科学研究所量子ビーム科学研究施設成果報告会, Mar. 2011, Japanese, The Institute of Scientific and Industrial Research, Osaka University, Domestic conference
    Oral presentation

  • Anomalous contact angle of water droplets on PADC detectors exposed to proton beams
    Tomoya Yamauchi, Keiji ODA, Koji KURAOKA, Yutaka Mori, Yusuke Maeda, Shunsuke Kaifu, Hiroaki Fukao, Akira Morimoto, Masato Kanasaki, Yoshihid Honda, Sachiko Toji, Nakahiro Yasuda, Satoshi Kodaira
    H22年度大阪大学産業科学研究所附量子ビーム科学研究施設成果報告会, Mar. 2011, Japanese, 大阪大学産業科学研究所附量子ビーム科学研究施設, 大阪大学産業科学研究所, Domestic conference
    Oral presentation

  • Response of PADC track detectors assessed by the multi-steps etching
    Atsuto Hattori, Yutaka Mori, Tomoya Yamauchi, Keiji Oda
    Workshop on Solid State Nuclear Track Detectors in Kobe 2011, Mar. 2011, Japanese, Kobe University, Domestic conference
    Oral presentation

  • A study on the free radicals in PADC detector induced by ion beams using ESR spectrometry
    Kosuke Ichimura, Yutaka Mori, Yusuke Maeda, Masato Kanasaki, Tomoya Yamauchi, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda
    Workshop on Solid State Nuclear Track Detectors in Kobe 2011, Mar. 2011, Japanese, Kobe University, Domestic conference
    Oral presentation

  • A study on some surface properties of ion-irradiated CR-39 track detectors
    Yusuke Maeda, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda, Koji Kuraoka
    Workshop on Solid State Nuclear Track Detectors in Kobe 2011, Mar. 2011, Japanese, Kobe University, Domestic conference
    Oral presentation

  • Structural analysis of heavy ion track in Polyethylene terephthalate film
    Akira Morimoto, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    Workshop on Solid State Nuclear Track Detectors in Kobe 2011, Mar. 2011, Japanese, Kobe University, Domestic conference
    Oral presentation

  • Irradiation effects of high energy carbon ion on PADC track detectors
    Yutaka Mori, Masato Kanasaki, Yusuke Maeda, Tomoya Yamauchi, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda
    Workshop on Solid State Nuclear Track Detectors in Kobe 2011, Mar. 2011, Japanese, Kobe University, Domestic conference
    Oral presentation

  • Chemical modification along 135 MeV/n carbon ion tracks in PADC detectors
    Yutaka Mori, Masato Kanasaki, Yusuke Maeda, Tomoya Yamauchi, Keiji Oda, Satoshi Kodaira, Teruaki Konishi, Nakahiro Yasuda
    The 58th Spring Meeting, 2010 The Japan Society of Applied Physics and Related Societies, Mar. 2011, Japanese, 応用物理学会, Kanagawa Institute of Technology, Domestic conference
    Oral presentation

  • A new simple diagnosis method for intense ion beam utilizing back scattered particles with CR-39 detectors
    Masato Kanasaki, Tomoya Yamauchi, Yuji Fukuda, Hironao Sakaki, Toshihiko Hori, Motonobu Tampo, Satoshi Kurashima, Tomihiro Kamiya, Kiminori Kondo
    Workshop on Solid State Nuclear Track Detectors in Kobe 2011, Mar. 2011, Japanese, Kobe University, Domestic conference
    Oral presentation

  • A new simple diagnosis method for intense ion beam utilizing back scattered particles with CR-39 detectors
    Masato Kanasaki, Tomoya Yamauchi, Yuji Fukuda, Hironao Sakaki, Toshihiko Hori, Motonobu Tampo, Satoshi Kurashima, Tomihiro Kamiya, Kiminori Kondo
    The 58th Spring Meeting, 2010 The Japan Society of Applied Physics and Related Societies, Mar. 2011, Japanese, 応用物理学会, Kanagawa Institute of Technology, Domestic conference
    Oral presentation

  • Characteristics of PADC track detectors with carbon dioxide treatment (3)
    Hiroaki Fukao, Masato Kanasaki, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    The 71st Autumn Meeting of the Japan Society of Applied Physics, Sep. 2010, Japanese, 応用物理学会, Nagasaki University, Domestic conference
    Oral presentation

  • Infrared spectroscopic study on heavy ion-irradiated polyimide films
    Shunsuke Kaifu, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    The 71st Autumn Meeting of the Japan Society of Applied Physics, Sep. 2010, Japanese, 応用物理学会, Nagasaki University, Domestic conference
    Oral presentation

  • Ion acceleration via interaction of intense laser pulse with cluster-gas target
    Yuji Fukuda, A. Ya. Faenov, Motonobu Tampo, T. A. Pikuz, Tatsuji Nakamura, Masaki Kando, Yukio Hayashi, Akifumi Yogo, Hironao Sakaki, Keigo Kawase, A. S. Pirozhkov, Koichi Ogura, Michiaki Mori, T. Zh. Esirkepov, James Koga, Tomoya Yamauchi, Ryosuke Kodama, P. R. Bolton, Kiminori Kondo, Toshikazu Kawanishi, Yoshiaki Kato, Toshiki Tajima, Hiromichi Daido, S. V. Bulanov
    The 71st Autumn Meeting of the Japan Society of Applied Physics, Sep. 2010, Japanese, 応用物理学会, Nagasaki University, Domestic conference
    Oral presentation

  • Surface wettability of ion-irradiated CR-39 (2)
    Yusuke Maeda, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda, Koji Kuraoka
    The 71st Autumn Meeting of the Japan Society of Applied Physics, Sep. 2010, Japanese, 応用物理学会, Nagasaki University, Domestic conference
    Oral presentation

  • Infrared spectroscopic study on heavy ion track in polyetylene terephthalate
    Akira Morimoto, Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    The 71st Autumn Meeting of the Japan Society of Applied Physics, Sep. 2010, Japanese, 応用物理学会, Nagasaki University, Domestic conference
    Oral presentation

  • Density of water along the latent tracks in PADC detectors
    Masato Kanasaki, Yutaka Mori, Yusuke Maeda, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    The 71st Autumn Meeting of the Japan Society of Applied Physics, Sep. 2010, Japanese, 応用物理学会, Nagasaki University, Domestic conference
    Oral presentation

  • Irradiation effects of proton and heavy ions on PADC track detectors -III
    Yutaka Mori, Masato Kanasaki, Yusuke Maeda, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    The 71st Autumn Meeting of the Japan Society of Applied Physics, Sep. 2010, Japanese, 応用物理学会, Nagasaki University, Domestic conference
    Oral presentation

  • Damage structure along heavy ion tracks in solid state nuclear track detectors
    Tomoya Yamauchi, Yutaka Mori, Masato Kanasaki, Yushuke Maeda, Keiji Oda, Nakahiro Yasuda, Teruaki Konishi, Remi Barillon
    H21年度HIMAC共同利用研究成果発表会, Apr. 2010, Japanese, 放射線医学総合研究所, ホテルポートプラザちば, International conference
    Oral presentation

  • Sensitization of PADC detectors with carbon dioxide treatment
    Hiroaki Fukao, Hiraku Chikada, Masato Kanasaki, Yutaka Mori, Atsushi Sakamoto, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    25th Workshop on Solid State Nuclear Track Detectors, Mar. 2010, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, Waseda University, Domestic conference
    Oral presentation

  • Characteristics of PADC track detectors with carbon dioxide treatment -II
    Masato Kanasaki, Hiraku Chikada, Yutaka Mori, Atsushi Sakamoto, Hiroaki Fukao, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    The 57th Spring Meeting, 2010 The Japan Society of Applied Physics and Related Societies, Mar. 2010, Japanese, 応用物理学会, Tokai University Shonan Campus, Domestic conference
    Oral presentation

  • Quantum yields for loss of carbonate ester bonds in polymeric nuclear track detectors under UV radiation
    Atsushi Sakamoto, Yutaka Mori, Masato Kanasaki, Yushuke Maeda, Tomoya Yamauchi, Keiji Oda
    25th Workshop on Solid State Nuclear Track Detectors, Mar. 2010, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, Waseda University, Domestic conference
    Oral presentation

  • Effects of UV radiation on carbonate ester bonds in polymeric track detectors
    Atsushi Sakamoto, Yutaka Mori, Tomoya Yamauchi, Keiji Oda
    The 57th Spring Meeting, 2010 The Japan Society of Applied Physics and Related Societies, Mar. 2010, Japanese, Tokai University Shonan Campus, Domestic conference
    Oral presentation

  • Surface wettability of ion-irradiated CR-39
    Yusuke Maeda, Yutaka Mori, Atsushi Sakamoto, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda, Kouji Kuraoka
    25th Workshop on Solid State Nuclear Track Detectors, Mar. 2010, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, Waseda University, Domestic conference
    Oral presentation

  • Structural analysis of heavy ion track in polyethylene terephthalate
    Akira Morimoto, Yutaka Mori, Atsushi Sakamoto, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    25th Workshop on Solid State Nuclear Track Detectors, Mar. 2010, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, Waseda University, Domestic conference
    Oral presentation

  • Density of water along the latent tracks in PADC detectors
    Masato Kanasaki, Shota Uraki, Yutaka Mori, Atsushi Sakamoto, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    25th Workshop on Solid State Nuclear Track Detectors, Mar. 2010, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, Waseda University, Domestic conference
    Oral presentation

  • Irradiation effects of proton and heavy ions on PADC track detectors (II)
    Yutaka Mori, Atsushi Sakamoto, Masato Kanasaki, Yushuke Maeda, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    25th Workshop on Solid State Nuclear Track Detectors, Mar. 2010, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, Waseda University, Domestic conference
    Oral presentation

  • Irradiation effects of proton and heavy ions on PADC track detectors -II
    Yutaka Mori, Atsushi Sakamoto, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    The 57th Spring Meeting, 2010 The Japan Society of Applied Physics and Related Societies, Mar. 2010, Japanese, 応用物理学会, Tokai University Shonan Campus, Domestic conference
    Oral presentation

  • Radiation chemical yield for loss of ether bond in PADC
    Tomoya Yamauchi, Yutaka Mori, Sachiko Tojo, Yoshihide Honda, Keiji Oda
    大阪大学産業科学研究所附属量子ビーム科学研究施設成果報告会, Mar. 2010, Japanese, 大阪大学産業科学研究所附属量子ビーム科学研究施設, The Institute of Scientific and Industrial Research, Osaka University, Domestic conference
    Oral presentation

  • Infrared spectroscopic study on Kr and Xe ion-irradiated polyimide films
    Shunsuke Kaifu, Yutaka Mori, Atsushi Sakamoto, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda, Kouji Kuraoka
    25th Workshop on Solid State Nuclear Track Detectors, Mar. 2010, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, Waseda University, Domestic conference
    Oral presentation

  • Track structure of proton and heavy ions in PADC detectors
    Tomoya Yamauchi, Yutaka Mori, Keiji Oda, Nakahiro Yasuda, Satoshi Kodaira, Remi Ballion
    24h Workshop on Radiation Detectors and Their Uses, Jan. 2010, Japanese, 高エネルギ加速器研究機構 放射線科学センター, High Energy Accelerator Research Organization, Domestic conference
    Oral presentation

  • Characteristics of PADC track detectors under the CO2 treatment
    Hiraku Chikada, Yutaka Mori, Atsushi Sakamoto, Tomoya Yamauchi, Keiji Oda
    The 70th Autumn Meeting of the Japan Society of Applied Physics, Sep. 2009, Japanese, 応用物理学会, Toyama Univrersity, Domestic conference
    [Invited]
    Invited oral presentation

  • Study on the wettability of CR-39 surface exposed to proton and heavy ions
    Yusuke Maeda, Yutaka Mori, Atsushi Sakamoto, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda, Kouji Kuraoka
    The 70th Autumn Meeting of the Japan Society of Applied Physics, Sep. 2009, Japanese, 応用物理学会, Toyama Univrersity, Domestic conference
    [Invited]
    Invited oral presentation

  • An evaluation of hydroxyl group along ion tracks in PADC detectors
    Masato Kanasaki, Yutaka Mori, Atsushi Sakamoto, Tomoya Yamauchi, Keiji Oda, Teruaki Konishi, Nakahiro Yasuda
    The 70th Autumn Meeting of the Japan Society of Applied Physics, Sep. 2009, Japanese, 応用物理学会, Toyama Univrersity, Domestic conference
    Oral presentation

  • Quantum yields for loss of carbonyl bonds in PC and PADC films expose to UV radiation
    Atsushi Sakamoto, Yutaka Mori, Tomoya Yamauchi, Keiji Oda
    第56回応用物理学関係連合講演会, Apr. 2009, Japanese, 応用物理学会, 筑波大学, Domestic conference
    Oral presentation

  • Damage structure along heavy ion tracks in solid state nuclear track detectors
    Tomoya Yamauchi, Yutaka Mori, Nakahiro Yasuda, Keiji Oda, Remi Barillon
    H20年度HIMAC共同利用研究成果発表会, Apr. 2009, Japanese, 放射線医学総合研究所, ホテルポートプラザちば, International conference
    Oral presentation

  • Irradiation effects of proton and heavy ions on PADC track detectors
    Yutaka Mori, Atsushi Sakamoto, Tomoya Yamauchi, Keiji Oda, Nakahiro Yasuda
    第56回応用物理学関係連合講演会, Apr. 2009, Japanese, 応用物理学会, 筑波大学, Domestic conference
    Oral presentation

  • An evaluation of characteristics of PADC detectors with the carbon dioxide treatment
    Hiraku Chikada, Yutaka Mori, Atsushi Sakamoto, Masato Kanasaki, Tomoya Yamauchi, Keiji Oda
    24th Workshop on Solid State Nuclear Track Detectors, Mar. 2009, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, 早稲田大学, Domestic conference
    Oral presentation

  • A quantitative evaluation of OH group in organic materials by FT-IR spectroscopy
    Masato Kanasaki, Yutaka Mori, Atsushi Sakamoto, Tomoya Yamauchi, Keiji Oda
    24th Workshop on Solid State Nuclear Track Detectors, Mar. 2009, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, 早稲田大学, Domestic conference
    Oral presentation

  • Latent tracks and local dose distribution in cellulose nitrate LR-115 detector
    Kazuya Saiki, Yutaka Mori, Atsushi Sakamoto, Masato Kanasaki, Yusuke Maeda, Tomoya Yamauchi, Keiji Oda, Nakahiro Yasuda
    24th Workshop on Solid State Nuclear Track Detectors, Mar. 2009, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, 早稲田大学, Domestic conference
    Oral presentation

  • Quantum yields for loss of carbonyl bonds in PC and PADC films expose to UV radiation
    Atsushi Sakamoto, Yutaka Mori, Masato Kanasaki, Yushuke Maeda, Tomoya Yamauchi, Keiji Oda
    24th Workshop on Solid State Nuclear Track Detectors, Mar. 2009, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, 早稲田大学, Domestic conference
    Oral presentation

  • Surface wettability of ion-irradiated CR-39
    Yusuke Maeda, Yutaka Mori, Atsushi Sakamoto, Tomoya Yamauchi, Keiji Oda, Nakahiro Yasuda, Kouji Kuraoka
    24th Workshop on Solid State Nuclear Track Detectors, Mar. 2009, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, 早稲田大学, Domestic conference
    Oral presentation

  • Irradiation effects of proton and heavy ions on PADC track detectors
    Yutaka Mori, Atsushi Sakamoto, Masato Kanasaki, Yushuke Maeda, Tomoya Yamauchi, Keiji Oda, Nakahiro Yasuda
    24th Workshop on Solid State Nuclear Track Detectors, Mar. 2009, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, 早稲田大学, Domestic conference
    Oral presentation

  • Radiation chemical yield for loss of carbonate ester bond in PADC
    Tomoya Yamauchi, Toshiji Ikeda, Yoshihide Honda, Keiji Oda
    平成20年度加速器量子ビーム実験室成果報告会, Mar. 2009, Japanese, 大阪大学産業科学研究所 加速器量子ビーム実験室, The Institute of Scientific and Industrial Research, Domestic conference
    Oral presentation

  • Track core size of proton and heavy ions in PADC detectors
    T. Yamauchi, Y. Mori, K. Oda, N. Yasuda, R. Barillon
    24th International Conference on Nuclear Tracks in Solids, Oct. 2008, English, International Nuclear Track Society, Istituto Nazional di Fisica Nucleare, Universita di Bologna, Bologna, Italy, International conference
    Oral presentation

  • Sensitization of PADC track detectors in carbon dioxide gas
    T. Yamauchi, Y. Mori, H. Chikada, H. Sakamoto, J. Kii, M. Kanasaki, K. Oda
    24th International Conference on Nuclear Tracks in Solids, Oct. 2008, English, International Nuclear Track Society, Istituto Nazional di Fisica Nucleare, Universita di Bologna, Bologna, Italy, International conference
    Poster presentation

  • Damage distribution along heavy ion tracks in polymers
    Tomoya Yamauchi, Yutaka Mori, Keiji Oda, Nakahiro Yasuda, Remi Barillon
    HIMAC共同利用研究成果発表会, Apr. 2008, Japanese, 放射線医学総合研究所, Port Plaza Chiba, Domestic conference
    Oral presentation

  • Sensitization effect of carbon dioxide on PADC detector
    Hiraku Chikada, Yutaka Mori, Tomoya Yamauchi, Keiji Oda
    23rd Work-Shop on Solid State Nuclear Track Detectors, Mar. 2008, Japanese, Waseda University, Domestic conference
    Oral presentation

  • Effects of UV photons on PC and PADC films
    Atsushi Sakamoto, Yutaka Mori, Tomoya Yamauchi, Keiji Oda
    23rd Work-Shop on Solid State Nuclear Track Detectors, Mar. 2008, Japanese, Waseda University, Domestic conference
    Oral presentation

  • Structure of heavy ion tracks in PADC films
    Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Nakahiro Yasuda
    23rd Work-Shop on Solid State Nuclear Track Detectors, Mar. 2008, Japanese, Waseda Universotty, Domestic conference
    Oral presentation

  • Track core radius of proton and heavy ions in PADC
    Tomoya Yamauchi, Yutaka Mori, Keiji Oda, Nakahiro Yasuda, Remi Barillon
    23rd Work-Shop on Solid State Nuclear Track Detectors, Mar. 2008, Japanese, Waseda University, Domestic conference
    Oral presentation

  • Modified structure along heavy ion tracks in PADC
    Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Nakahiro Yasuda
    The 55th Spring Meeting, 2008 The Japan Society of Applied Physics and Related Societies, Mar. 2008, Japanese, 日本大学理工学部 船橋キャンパス, Domestic conference
    Oral presentation

  • Chemical modification along heavy ion tracks in PADC films
    Tomoya Yamauchi, Yutaka Mori, Keiji Oda, Nakahiro Yasuda, Remi Barillon
    14th International Conference on Radiation Effects in Insulators, Aug. 2007, English, Caen, France, International conference
    Oral presentation

  • Damage distribution along heavy ion tracks in polycarbonate (3)
    Souichirou Watanaba, Tomoya Yamauchi, Keiji Oda, Nakahiro Yasuda
    第５４回応用物理学関係連合講演会, Mar. 2007, Japanese, 青山学院大学, Domestic conference
    Oral presentation

  • Damage distribution along heavy ion tracks in Makrofol KG
    Souichirou Watanaba, Tomoya Yamauchi, Keiji Oda, Nakahirro Yasuda
    第２２回固体飛跡検出器研究会, Mar. 2007, Japanese, 放射線医学総合研究所, Domestic conference
    Oral presentation

  • Radiation chemical reaction along heavy ion tracks in CR-39
    Yutaka Mori, Tomoya Yamauchi, Keiji Oda, Nakahiro Yasuda
    22nd Workshop on Solid State Nuclear Track Detectors, Mar. 2007, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, 放射線医学総合研究所, Domestic conference
    Oral presentation

  • Carbon dioxide treatment for CR-39 detectors
    Junpei Kii, Tomoya Yamauchi, Keiji Oda
    22nd Workshop on Solid State Nuclear Track Detectors, Mar. 2007, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, 放射線医学総合研究所, Domestic conference
    Oral presentation

  • Effects of UV-exposure on CR-39
    Takahiro Matsuo, Tomoya Yamauchi, Keiji Oda
    22nd Workshop on Solid State Nuclear Track Detectors, Mar. 2007, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, 放射線医学総合研究所, Domestic conference
    Oral presentation

  • Damage distribution along heavy ion tracks in polycarbonate (2)
    Souichirou Watanaba, Tomoya Yamauchi, Keiji Oda, Nakahiro Yasuda
    第６７回応用物理学会学術講演会, Aug. 2006, Japanese, 立命館大学, Domestic conference
    Oral presentation

  • Damage distribution along heavy ion tracks in polycarbonate
    Souichiron Watanabe, Tomoya Yamauchi, Nakahiro Yasuda, Keiji Oda
    21st Workshop on Solid State Nuclear Track Detectors, Mar. 2006, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, 放射線医学総合研究所, Domestic conference
    Oral presentation

  • Damage distribution along heavy ion tracks in polycarbonate
    Souichiron Watanabe, Tomoya Yamauchi, Nakahiro Yasuda, Keiji Oda
    第５３回応用物理学会関連連合講演会, Mar. 2006, Japanese, 武蔵工業大学, Domestic conference
    Oral presentation

  • On the latent tracks in CR-39 & LR-115 detectors
    Tomoya Yamauchi
    第２１回固体飛跡検出器研究会, Mar. 2006, Japanese, 放射線医学総合研究所, Domestic conference
    Oral presentation

  • Damage distribution along heavy ion tracks in polycarbonate
    Souichirou Watanaba, Tomoya Yamauchi, Nakahiro Yasuda, Keiji Oda, Remi Barillon
    第６６回応用物理学会学術講演会, Sep. 2005, Japanese, 徳島大学, Domestic conference
    Poster presentation

  • Track formation process in polymers with gas emissions
    Tomoya Yamauchi
    20th Workshop on Solid State Nuclear Track Detectors, Feb. 2005, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, 近畿大学, Domestic conference
    Oral presentation

  • Damage distribution along heavy ion tracks in PC
    Takashi Masutani, Tomoya Yamauchi, Keiji Oda, Nakahiro Yasuda
    20th Workshop on Solid State Nuclear Track Detectors, Feb. 2005, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, 近畿大学, Domestic conference
    Oral presentation

  • Radial track size of heavy ions in CR-39
    Taku Asuka, Tomoya Yamauchi, Keiji Oda, Nakahiro Yasuda
    20th Workshop on Solid State Nuclear Track Detectors, Feb. 2005, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, 近畿大学, Domestic conference
    Oral presentation

  • IR spectra of CR-39: theory and experiments
    Kentarou Izumi, Tomoya Yamauchi, Keiji Oda
    20th Workshop on Solid State Nuclear Track Detectors, Feb. 2005, Japanese, 固体飛跡検出器研究会／応用物理学会放射線分科会, 近畿大学, Domestic conference
    Oral presentation

  • 高エネルギー中性子用積算型個人線量計の開発（Ⅲ）
    今坂 雄一, 塚原 一孝, 山内 知也, 小田 啓二, 遠藤 章, 中根 佳宏, 山口 泰弘
    日本原子力学会2004年（第42回）春の年会要旨集 pp.171, Mar. 2004, Japanese, 日本原子力学会, 岡山大学, Domestic conference
    Oral presentation

  • CR-39中イオントラックに沿った二酸化炭素生成
    山内 知也, 阿須賀 拓, 泉 健太郎, 桝谷 隆志, 小田 啓二, レミ バリオン, エマニエル バロンザ
    第19回固飛跡検出器研究会, Mar. 2004, Japanese, 未記入, 近畿大学, Domestic conference
    Oral presentation

  • 海水による二酸化炭素の吸収・固定に関する基礎研究
    劉 秋生, 福田 勝哉, 大辻 友雄, 井川 博雅, 山内 知也, 杉田 英昭, 中澤 武, 石田 憲治
    神戸大学海事科学部プロジェクト研究報告会要旨集 pp.43-45, 2004, Japanese, 神戸大学海事科学部, 未記入, Domestic conference
    Oral presentation

  • イメージングプレートにおけるPSL強度分布の線種依存性
    塚原 一孝, 光山 隆士, 山内 知也, 小田 啓二
    日本放射線安全管理学会第2回学術大会講演予稿集 pp.43, Dec. 2003, Japanese, 日本放射線安全管理学会, つくば研究交流センター, Domestic conference
    Oral presentation

  • Studies on the nuclear tracks in CR-39 plastics
    YAMAUCHI Tomoya
    Invited Talk in Technological University of Dresden, Germany 6 Nov., Oct. 2003, English, 未記入, 未記入, International conference
    Oral presentation

  • 点状ガンマ線源周辺における電子平衡の乱れ
    小田 啓二, 田邉 幸治, 山内 知也, 馬場 末喜
    第40回理工学における同位元素・放射線研究発表会要旨集 pp.1, Jul. 2003, Japanese, 日本アイソトープ協会, 日本青年館, Domestic conference
    Oral presentation

  • Deuterized radiation for detection of high-energy neutrons with plastic nuclear track detector
    ODA Keiji, IMASAKA Y, YAMAUCHI Tomoya, NAKANE Y, ENDO A, YAMAGUCHI Y
    Abstracts of 2nd iTRS international symposium on radiation safety and detection technology pp.88, 2003, English, 未記入, 未記入, International conference
    Oral presentation

  • Thermal Release Behavior of Helium Implanted into Copper
    YAMAUCHI TOMOYA, Tokura Shigeru, Yamanaka SHhnsuke, Miyake Masanobu
    1988 Annual Meeting of the Atomic Energy Society of Japan, Apr. 1988, Japanese, 東京工業大学, Domestic conference
    Oral presentation

  • Thermal Release of Helium from Cu Irradiated by He+ Ions
    YAMAUCHI TOMOYA, Yamanaka Shinsuke, Miyake Masanobu
    1987 Annual Meeting of the Atomic Energy Society of Japan, Apr. 1987, Japanese, 名古屋大学工学部, Domestic conference
    Oral presentation

  • イオン照射チタンからのヘリウム熱放出挙動
    YAMAUCHI TOMOYA, Yamanaka Shinsuke, Miyake Masanobu
    1986 Annual Meeting of the Atomic Energy Society of Japan, Mar. 1986, Japanese, 京都大学宇治キャンパス, Domestic conference
    Oral presentation

■ Research Themes
  • The Structure of Invisibility of Radiation Health Effects and Neglect of Damages by the Nuclear Accidents and Its Policy Implications
    柿原 泰, 本行 忠志, 山内 知也, 濱岡 豊, 高橋 博子, 林 衛, 徳永 恵美香, 中原 聖乃
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Tokyo University of Marine Science and Technology, 01 Apr. 2025 - 31 Mar. 2028

  • Reconsideration of Radiation Protection System from the Perspectives of Historical and Social Studies of Science, Based on Citizen Values
    柿原 泰, 藤岡 毅, 山内 知也, 濱岡 豊, 高橋 博子, 中原 聖乃, 林 衛, 徳永 恵美香
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Tokyo University of Marine Science and Technology, 01 Apr. 2021 - 31 Mar. 2025
    本研究は、放射線影響をめぐる科学的な調査研究をもとにした放射線防護の体系（その理論、基本原則の考え方、諸概念等）がいかに形成されたのか、そして実際に社会的な場面で放射線防護の実践がいかになされたのか、その実態と問題点について、科学史・科学論的研究を軸とした研究によって明らかにしつつ、とくにこれまでの放射線防護に欠けていると考えられる市民的観点からの再検討を加え、あるべき姿を提示していくことを目的として研究を進めている。本研究の3年目の2023年度においては、以下のような取り組みを行なった。 市民的観点から放射線防護のあり方を問い直すことを目的とした取り組みとして、本研究の研究分担者である濱岡豊教授を中心にいくつかの市民団体とも協力して、11月に福島にて「放射線防護の民主化フォーラム2023-2030」を企画・開催した。これまでの本研究での成果を含め、他の研究グループや被災者からの報告もお願いし、放射線リスクに関する科学的観点からの再検討や原発事故後の被災地住民・避難者の視点から放射線防護の問題点を考察し、ICRP（国際放射線防護委員会）の勧告・報告書に見られる問題点を批判的に検討した。 12月の科学技術社会論学会の年次研究大会では、「原発事故を原因とする小児甲状腺がん多発――崩壊寸前の過剰診断論」、「放射線防護をめぐる倫理的・法的・社会的問題」と題する2つのセッションを企画し、研究成果を発表、参加者と討論を行うことができた。

  • Reconsideration of Radiation Protection System from the Perspectives of Historical and Social Studies of Science, Based on Citizen Values
    柿原 泰, 藤岡 毅, 山内 知也, 濱岡 豊, 高橋 博子, 中原 聖乃, 林 衛, 徳永 恵美香
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Tokyo University of Marine Science and Technology, 01 Apr. 2021 - 31 Mar. 2025
    本研究は、放射線影響をめぐる科学的な調査研究をもとにした放射線防護の体系（その理論、基本原則の考え方、諸概念等）がいかに形成されたのか、そして実際に社会的な場面で放射線防護の実践がいかになされたのか、その実態と問題点について、科学史・科学論的研究を基に明らかにしつつ、とくにこれまでの放射線防護に欠けていると考えられる市民的観点からの再検討を加え、あるべき姿を提示すべく調査研究を進めている。本研究の初年度であった2021年度は、以前より取り組んできた調査研究をさらに発展させるべく、以下のような取り組みを行なった。 5月の日本科学史学会の年会ではシンポジウム「放射線被曝をめぐる科学史・科学論の課題――福島原発震災から10年」を企画し、これまでの諸研究で見えてきたことを確認しつつ、今後に向けた課題を提起した。 9月には本研究組織の全体研究会をオンラインで実施し、欧州放射線リスク委員会の勧告の意義を再検討し、また国際法の視角から原子力災害被災者の権利と国家の義務に関して議論を行なった。 3月には、NGO/NPOのいくつかの研究グループと協力して連続シンポジウムを企画し、市民的観点から放射線防護のあり方を問い直すシンポジウムの第1回目を開催した。とくに原発事故時の被災地住民がいかに放射線防護策を受けることができなかったか、避難と帰還をめぐる施策の過程においていかに意見がくみ取られることがなかったかということを聞き取り、放射線防護の実際の課題を理解・把握することができた。

  • A new physical parameter to describe the detection thresholds of Etched Track Detectors
    Yamauchi Tomoya
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Kobe University, Apr. 2019 - Mar. 2022
    Modified structure along latent tracks and track formation process have been investigated mainly in poly (allyl diglycol carbonate), PADC, which is recognized as a sensitive etched track detector. This knowledge is essential to develop novel detectors with improved track registration property. The track structures of protons and heavy ions have been examined by means of FT-IR spectrometry. Through a set of experiments on low-LET radiations, multi-step damage process by electron hits was confirmed in the radiation-sensitive parts of the PADC repeat-unit. We unveiled the layered structure in tracks, in relation with the number of secondary electrons. We also proved that the etch pit was formed when at least two repeat-units were destroyed along the track radial direction. To evaluate the number of secondary electrons around the tracks, a series of numerical simulations were performed with Geant4-DNA. Therefore, we are proposing new physical criterions to describe the detection threshold.

  • History of Radiation Effects Research and Protection Standards
    KAKIHARA Yasushi
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Tokyo University of Marine Science and Technology, 01 Apr. 2016 - 31 Mar. 2020
    This research project has investigated the historical processes of the scientific research on radiation effects, and how they were evaluated by international organizations and how they were related to the radiological protection standards, especially focusing on the issues of radiation effects after the nuclear accidents at Chernobyl and Fukushima from international and interdisciplinary perspectives.

  • 山内 知也
    学術研究助成基金助成金／基盤研究(C), Apr. 2016 - Mar. 2019, Principal investigator
    Competitive research funding

  • Investigation of a synergetic ion acceleration process in cluster media at a relativistic laser intensity regime
    Fukuda Yuji, KISHIMOTO Yasuaki, YAMAUCHI Tomoya, MORISHIMA Kunihiro, MATSUI Ryutaro, TANAKA Hirotaka, OKAMOTO Yuki, IWATA Natsumi, UNO Masataka, TAKANO Yuta, MORII Kosaku, ASAI Takafumi, SAKAMOTO Keita, SHIMIZU Kazuki, KODAIRA Satoshi, ODA Keiji, Lorenzo Romagnani, Francois Sylla
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), 01 Apr. 2014 - 31 Mar. 2018
    The project aims, by utilizing the advanced ion acceleration method with the use of micron-size cluster targets developed by PI and co-workers, to find a new way to generate quasi-monoenergetic ion beams exceeding 100 MeV, which has a potential to be widely applicable to medical and industrial purposes, but no one has accomplished before. In numerical studies using the 3D-PIC code, we have discovered a new approach for accelerating a quasimonoenergetic proton bunch up to 290 MeV via a hemispherically converging collisionless shock created via laser-cluster interactions at the relativistically induced transparency regime. We have conducted ion acceleration experiments with the PW class J-KAREN-P laser at QST-KPSI. We found that only protons having the energies exceeding 10 MeV were for the first time accelerated in the forward direction with a high repetition rate.

  • 小田 啓二
    科学研究費補助金／基盤研究(B), Apr. 2012 - Mar. 2016
    Competitive research funding

  • 山内 知也
    科学研究費補助金／基盤研究(C), 2010, Principal investigator
    Competitive research funding

  • 小田 啓二
    科学研究費補助金／基盤研究(B), 2006
    Competitive research funding

  • 小田 啓二
    科学研究費補助金／基盤研究(C), 2005
    Competitive research funding

  • Latent track formation in CR-39 and the role of dissolved oxygen
    YAMAUCHI Tomoya, ODA Keiji
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Kobe University of Mercantile Marine, 2001 - 2002
    The following results have been obtained for the present studies on the latent tracks in CR-39 nuclear track detector. The radial size of track core has been determined through UV spectral measurements combined to the model of track overlapping and by AFM observations of slightly etched detectors. The track core radius was found to be about a few nano-meters and almost proportional to the cubic root of stopping power. As a control study, the etching properties of CR-39, irradiated by low-LET radiation, has been examined. The observed depth-dependence and dose-rate dependence of the bulk etch rate of the irradiated CR-39 were explained that the damage formation process was governed by the reaction between the radiation induced radicals and the oxygen supplied from the air. This indicated that latent tracks in CR-39 are produced through local radiation induced oxidation process along the ion paths. Studies on vibration spectra, Near-IR, FT-IR and Raman spectra, of CR-39 have been also carried out to estimate the chemical structure of the latent tracks. The creation of OH group in irradiated CR-39 has been confirmed.

  • Establishment of Database of CR-39 Track Detector Response to Light Ions
    ODA Keiji, YAMAUCHI Tomoya
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Kobe University of Mercantile Marine, 2000 - 2002
    The solid state nuclear track detector (SSNTD) shows its characteristic feature in personal dosimetry for crews in space shuttles, separate measurement of charged particles emitted from laser-induced plasmas and many other research fields. It is indispensable for such applications to utilize well-defined data of fundamental response of SSNTDs to charged particles. In the present, however, there remains a serious problem of no common database. It is the main purpose of this research to establish a reliable database for light ions through international comparison among Universite de Franche-Conte (UFC), France, Dresden University of Technology (DUT), Germany and Kobe University of Mercantile Marine (KUMM), Japan. At first, all the data for proton (p), deuteron (d), triton (t) and alpha-particle (α), obtained by 1999, were checked and compiled including some new data from additional experiments. The CR-39 samples irradiated by lithium ions (Li) with energies of 4.8, 6.8 and 10.8 MeV were distributed in three teams, and then processed and analyzed independently. All data were consistent with each team. We also found out that the response function depended slightly upon the incident energy. It was considered to be caused by an existence of less sensitive layer near the surface. Finally, the response of CR-39 detector to carbon ions (C) upto 22.5 MeV was evaluated in 2002. The deviation among three teams was enlarged, especially near the endpoint of the ion trajectory. It would be related with a steep change in the track etch rate along the ion pass. We improved the response data by introducing the multi-stage etching technique and taking a shorter etching interval.

  • 赤外分光法による飛跡検出器中潜在飛跡の研究
    山内 知也
    日本学術振興会, 科学研究費助成事業, 奨励研究(A), 神戸商船大学, 1997 - 1998
    数MeVオーダーのイオンビームを照射したCR-39検出器中に形成される損傷の分析に、赤外分光法を中心とする光学的手法を適用した。照射及び計測条件のうち真空中保持のもたらす効果に着目し、それらとエッチング特性との関係についても検討した。イオンのみならず、γ線を照射した試料についても同様の分析を行った。いずれ場合にもフルエンスや線量の増加とともに試料は著しく黄変する。紫外-可視分光によると、未照射試料には、220nm付近の強い吸収と260nm付近の弱い吸収があるが、高いフルエンスになると、水素やヘリウムでは約400nm、炭素ではおよそ500nm付近のより長波長側でも強い吸収が見られる。γ線では数MGyの高線量照射後でも300nmを以上には吸収帯は広がらず、顕著な線質依存性が確認された。260nm付近の吸収のフルエンス依存性より、水素イオン、ヘリウムイオン、炭素イオンがつくる潜在飛跡の径方向広がりは、それぞれ、1.0nm、1.7nm、3.0nm程度であると評価された。これらの値及びLET依存性は重イオンについての研究報告が示す傾向とほぼ一致している。γ線照射の場合にも真空中照射では吸収が強くなったが、同時にエッチング速度は小さくなっており、260nm付近の吸収とエッチングに関連する損傷とは直接の関連は無いと見られる。ただし長波長側での吸収拡大(黄変)とエッチング速度の増大には明瞭な関連がある。数MGy以上の高い線量までγ線照射した試料中には、赤外分光により、未照射試料には存在しないOH基に由来する吸収(3460/cm)が観察されたが、真空中で照射した試料にはこれは確認されなかった。大気中照射では酸素の存在の下で高い収率で分子鎖が切断されているが、真空中ではもっぱら水素の放出によって不飽和結合、あるいは共役結合が増加し、その結果黄変するものと見られる。

  • 昇温脱離法による高融点金属中ヘリウム捕獲サイトの研究
    山内 知也
    日本学術振興会, 科学研究費助成事業, 奨励研究(A), 神戸商船大学, 1995 - 1995
    高融点金属中におけるヘリウム捕獲サイトを昇温脱離法(TDS)を用いて評価するために、はじき出し損傷を起こさない約50eVの低いエネルギーから最大5keVまでのヘリウムイオン照射が可能な低エネルギーイオン銃、室温から最高約1400℃までを最大80K/secで昇温加熱できる赤外線導入加熱装置、ならびに四重極質量分析計を備えた真空分析システムを作成している。真空分析システムは大きく3つの部分に分かれており、試料ホルダーとイオン源、加熱装置を持つ主チェンバー、質量分析計のある分析チェンバー、及び試料導入用チェンバーからなり、それぞれはゲートバルブを介して接続され、独自のターボ分子ポンプで排気される。 分析チェンバーは既に調整済みであり、質量分析計がヘリウムに対して十分な感度を有することを確認した。主チェンバーについてはイオン源と加熱装置の据えつけを完了し、後者については十分な温度制御を持つことを確認した。現在イオン源の調整を行っているが、ヘリウムイオンについては期待されるビーム電流(約20μA)が得られていない。アルゴンビームでは十分なビーム電流が安定して得られているので、イオン化エネルギーの差がECR型イオン源の性能を大きく左右しているものと考えられる。現在のところプラズマ室中の電子密度を向上させるために、アルゴンとヘリウムの混合ガスを使用する、プラズマ室壁材料を現在のBNよりも仕事関数の小さい別の材料へ変更する、プラズマの付きやすさを大きく規定する磁場強度を再調整する、といった観点から改良作業を進めている。 ビーム調整の完了後は、モリブデンとニッケルをターゲットとしTDSスペクトルの入射エネルギー及びフルエンス依存性についての実験を開始する予定である。

  • 飛跡検出器応答の同位体効果に関する研究
    小田 啓二, 山内 知也
    日本学術振興会, 科学研究費助成事業, 一般研究(C), 神戸商船大学, 1995 - 1995
    CR-39飛跡検出器の利用は、宇宙空間での線量計測、モノポール探査実験や各種核融合実験にまで広がってきている。本研究では、これら応用のために不可欠な基礎データである水素同位体に対する応答について検討することを主目的とした。 プロトンとデューテロンは神戸商船大学静電加速器を使って直接照射した。放射線防護上イオンビームとしての取り出しが困難であるトリトンについては、京都大学原子炉実験所重水設備において実験を繰り返し、フッ化リチウム薄膜に熱中性子を当て ^6Li(n,t)^4He反応を利用する手法を確立した。これらサンプルの処理段階においては、エッチング処理とピット計測を繰り返して同一のピットを追跡計測する「多段階エッチング法」を採用し、これにより得られる成長曲線から、任意の残余飛程におけるレスポンス関数(エッチ率比vs残余飛程)を評価した。 以上の結果より、3つの水素同位体のレスポンス関数を評価した。特に、これまで信頼のおける結果がなかったトリトンのデータが得られたことは、本研究における大きな収穫であった。これらを比較すると、飛程終点付近の形状に顕著な差異が観察された。このことから、CR-39を用いた水素同位体の識別計測が可能であることが明らかとなった。 さらに、特殊な同位体効果の存在を調べるために、得られたレスポンス関数を粒子エネルギー(E)、核子当たりの粒子エネルギー(E/n)、粒子速度(β)、LET200、阻止能の関数として包括的に評価した。この結果、核子当たりのエネルギーまたは粒子速度に対するエッチ率比のデータから、実用的には誤差範囲内で同位体に関係なく同一であるとしても良いことが確認できた。しかしながら、データはプロトン、デューテロン、トリトンと質量の順に微妙に変化していると見ることもできる。今後、より詳細な実験から同位体効果に関する知見が得られるものと期待される。

  • 太平洋上におけるエアロゾル長距離輸送の動態
    三宅 寛, 山内 知也, 小田 啓二, 山内 智也
    日本学術振興会, 科学研究費助成事業, 一般研究(C), 神戸商船大学, 1994 - 1995
    本研究は,海洋上においてエアロゾル試料採取を行い,高感度の多元素同時分析法である粒子線励起X線分析法(PIXE)を活用して洋上エアロゾルに含まれる諸元素濃度の粒径分布を求め,半減期3.82日のラドンを陸起源大気の輸送時間のトレーサーとして利用して,陸起源エアロゾルの長距離輸送の動態を明らかにし,陸起源元素の対流圏内滞留時間を評価することを目的とするものである。 1995年1月に運輸省航海訓練所の練習船日本丸による東京-ハワイ間の航路において,ドラム式カスケードインパクターを使用して採取したエアロゾル試料について,捕集膜の下に装着した薄板状CR-39飛跡検出器に記録されたα線飛跡数を計測して,ラドン娘核種濃度の時間的変化を調べた。連続捕集された試料によりラドン娘核種濃度の詳細な時間的変化が求められ,また,その粒径分布の時間的変化も明らかになった。 500HPa,700HPa及び850HPaの等高線図と地表面の等圧線図を用いて,3時間毎の観測点からの大気流跡線線追跡を行い,陸地からの大気輸送時間から求めたラドン濃度の減衰率と実測されたラドン濃度とを比較し,ラドンを陸起源大気のトレーサーとして利用する方法の信頼性が高いことを確かめることができた。この結果については,1996年7月の第33回理工学における同位元素研究発表会において報告する。 別紙理由書に述べるように,震災のため肝心のPIXE分析による成果を挙げることができなかったので,過去の洋上エアロゾル試料採取時の大気流跡線解析を詳細に行って,本研究の目的とするエアロゾル長距離輸送の動態解明に努め,また,1996年1〜3月の日本丸による東京-ハワイ間の周回航路においてエアロゾル試料採取を実施した。復旧に全力を挙げた加速器及びPIXE分析装置は本年5月には使用可能になる見通しであるので,本研究をまとめた小冊子は,その成果を加え本年6月末までに提出する予定である。

  • EVALUATION OF EQUILIBRIUM-EQUIVALENT CONCENTRATIONS OF RADON AND THORON WITH A HIGH-SENSITIVE PASSIVE MONITOR
    MIYAKE Hiroshi, YAMAUCHI Tomoya, ODA Keiji
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for General Scientific Research (C), KOBE UNIVERSITY OF MERCANTILE MARINE, 1992 - 1993
    Simultaneous and discriminative measurement of the concentrations of radon, thoron and their daughters was performed using a passive monitor with CR-39 track detector. Etch pits on a detector were discriminated with their sized and shapes for alpha particle energy of 6.0MeV(^<218>Po, ^<212>Bi), 7.7MeV(^<214>Po) and 8.8MeV(^<212>Po). Discriminating capability was enhanced by use of a degrader mounted on the detector. Etch pits were automatically classified for their sized and shapes using a computer-aided counting system. Radon and thoron daughters were electrostatically collected onto the degrader surface in order to eliminate alpha particles impinged from the space near the detector surface with reduced energy. A cup for electrostatic collection was designed to prevent the alpha particles emitted from daughters attached on the cup wall and to obtain a flat distribution of daughters collected on the detector surface. This method was applied to the measurement of equilibrium-equivalent concentrations of radon and thoron in thoron-rich fields.

  • Mechanism of Oxygen Effect on Solid State Nuclear Track Detectors
    MIYAKE Hiroshi, YAMAUCHI Tomoya, ODA Keiji
    Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for General Scientific Research (C), Kobe University of Mercantile Marine, 1990 - 1991
    Solid state nuclear track detectors, especially CR-39 plastic ones, are a useful tool to detect heavy charged particles and applied to many fields, such as radiation protection measurements, nuclear fusion study, space science, etc. However, the storage of these detectors in vacuum causes severe effects on the registration sensitivity. The oxygen dissolved in a detector plays an important role in the latent track formation. The purpose of this project is to clarify the mechanism of the "Oxygen Effect" and to develop improved detectors. The oxygen concentration and the diffusion coefficient in CR-39 plastic were measured, and the relation between the oxygen concentration and the sensitivity of the detector was ascertained. Outgas rates of oxygen and some other components from CR-39 sheets commercially available were measured at room temperature with a quadrupole mass specrometer. Diffusion coefficients and oxygen concentrations dissolved at atmospheric pressure were evaluated to be(4-9)x10^<-9>cm^2/sec and(1-8)x10^<19>molecules/cm^3, respectively. The reduction rates of etch rate ratios through the storage in vacuum were given by a function of local pressures of oxygen dissolved in CR-39. These results supported the "oxygen setting model", quantitatively. The life time of the radicals formed by alpha-particle irradiation in the sufficiently outgassed CR-39 was evaluated on the basis of the examination for etch pit recovery in radius due to the air exposure after the storage in vacuum. Radicals with a life time of about 40 minutes were found to be formed as well as radicals with a life time of less than a few minutes after irradiation. It was also found that the fractions of radicals with different life times depended on the lots of CR-39, the time of storage after production and the energy of incident particles.

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