Research activity information

• May 2017 分子分光研究会, 第17回分子分光研究会 優秀講演賞, 単一モード紫外レーザーによるフルオレンの高分解能分光

  黒田 真司, KASAHARA SHUNJI

  Japan society

• Optical frequency synthesizer for wide-range frequency scan and its application to high-resolution molecular spectroscopy

  Masatoshi Misono, Shunji Kasahara, Akiko Nishiyama, Masaaki Baba

  In high-resolution molecular spectroscopy, detailed structures and dynamics appear as frequency shifts, line broadening, intensity anomalies, and Zeeman effects. To observe these minute effects, the relative uncertainty of the frequencies should be less than 10⁻⁹. However, to comprehensively analyze the rovibronic energy-level structure and dynamics in a single vibronic excited state, the spectrum over the entire single vibronic band, which extends to hundreds of GHz, must be measured. We developed an optical frequency synthesizer (OFS) employing a scanning single-mode Ti:Sapphire laser and an Er comb to satisfy these contradictory demands. The continuous scanning range was not limited in the developed OFS, and wide-range spectra extending across the entire scanning range of the single-mode laser in the OFS were obtained. For a detailed examination of the developed OFS, we measured the D₂ transition of Rb atoms. Although continuous scanning generally has an adverse effect on precise frequency determination, the obtained transition frequencies agreed with those obtained in previous studies, where laser frequencies were locked to a specific transition for a long time. To demonstrate the power of the developed OFS in molecular spectroscopy, the rovibronic spectrum of 1,2-benzanthracene was observed over a single band. We successfully obtained spectra in which the rotational lines were well-resolved.

  Optica Publishing Group, Nov. 2024, Journal of the Optical Society of America B, 41(12) (12), 2791 - 2797, English

  [Refereed]

  Scientific journal


• Hyperfine-resolved high-resolution laser spectroscopy of 14NO2 radical in the 15885 cm−1 energy region

  Kohei Tada, Shunji Kasahara

  Elsevier BV, Oct. 2020, Journal of Molecular Structure, 1218, 128529 - 128529, English

  [Refereed]

  Scientific journal


• Hyperfine interaction constants of (NO2)-N-14 in 14 500-16 800 cm(-1) energy region

  Kohei Tada, Michihiro Hirata, Shunji Kasahara

  Oct. 2017, JOURNAL OF CHEMICAL PHYSICS, 147(16) (16), 164304, English

  [Refereed]

  Scientific journal

  Link to Kobe Univ. Repository (Kernel)


• Rotational assignment of the 14NO3 high-resolution spectrum in the 15100 cm-1 region

  TADA Kohei, ISHIWATA Takashi, HIROTA Eizi, KASAHARA Shunji

  Feb. 2016, J. Mol. Spectrosc., 321, 23 - 27, English

  [Refereed]

  Scientific journal


• High-resolution laser spectroscopy and magnetic effect of the (B)over-tilde(2)E ' <- (X)over-tilde(2)A(2)' transition of the N-15 substituted nitrate radical

  Kohei Tada, Kanon Teramoto, Takashi Ishiwata, Eizi Hirota, Shunji Kasahara

  Mar. 2015, JOURNAL OF CHEMICAL PHYSICS, 142(11) (11), 114302, English

  [Refereed]

  Scientific journal


• High-resolution laser spectroscopy and magnetic effect of the B 2E' ← X 2A2' transition of 14NO3 radical

  TADA Kohei, KASHIHARA Wataru, BABA Masaaki, ISHIWATA Takashi, HIROTA Eizi, KASAHARA Shunji

  Dec. 2014, J. Chem. Phys., 141(18) (18), 184307, English

  [Refereed]

  Scientific journal


• High-resolution laser spectroscopy and magnetic effect of the (B)over-tilde(2)E ' <- (X)over-tilde(2)A(2)' transition of (NO3)-N-14 radical

  Kohei Tada, Wataru Kashihara, Masaaki Baba, Takashi Ishiwata, Eizi Hirota, Shunji Kasahara

  Nov. 2014, JOURNAL OF CHEMICAL PHYSICS, 141(18) (18), English

  [Refereed]

  Scientific journal


• Rotationally resolved high-resolution spectrum of the S-1-S-0 transition of jet-cooled thioanisole

  Mariko Hoshino-Nagasaka, Tadashi Suzuki, Teijiro Ichimura, Shunji Kasahara, Masaaki Baba, Susumu Kawauchi

  2010, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 12(40) (40), 13243 - 13247, English

  [Refereed]

  Scientific journal


• Vibrational and rotational structure and excited-state dynamics of pyrene

  Masaaki Baba, Motohisa Saitoh, Yasuyuki Kowaka, Kunio Taguma, Kazuto Yoshida, Yosuke Semba, Shunji Kasahara, Takaya Yamanaka, Yasuhiro Ohshima, Yen-Chu Hsu, Sheng Hsien Lin

  Dec. 2009, JOURNAL OF CHEMICAL PHYSICS, 131(22) (22), 224318, English

  [Refereed]

  Scientific journal


• Rotationally resolved ultrahigh-resolution laser spectroscopy of the S-2 (1)A(1)<- S-0 (1)A(1) transition of azulene

  Yosuke Semba, Kazuto Yoshida, Shunji Kasahara, Chi-Kung Ni, Yen-Chu Hsu, Sheng Hsien Lin, Yasuhiro Ohshima, Masaaki Baba

  Jul. 2009, JOURNAL OF CHEMICAL PHYSICS, 131(2) (2), English

  [Refereed]

  Scientific journal


• Rotationally resolved ultrahigh-resolution laser spectroscopy of the S-2 (1)A(1)<- S-0 (1)A(1) transition of azulene

  Yosuke Semba, Kazuto Yoshida, Shunji Kasahara, Chi-Kung Ni, Yen-Chu Hsu, Sheng Hsien Lin, Yasuhiro Ohshima, Masaaki Baba

  Jul. 2009, JOURNAL OF CHEMICAL PHYSICS, 131(2) (2), English

  [Refereed]

  Scientific journal


• High-resolution spectroscopy of weak and short-lived bands of the S-1 B-1(3u)<- S-0 (1)A(g) transition of naphthalene

  Kazuto Yoshida, Yosuke Semba, Shunji Kasahara, Takaya Yamanaka, Masaaki Baba

  May 2009, JOURNAL OF CHEMICAL PHYSICS, 130(19) (19), English

  [Refereed]

  Scientific journal


• CH3 Internal Rotation in the S-0 and S-1 States of 9-Methylanthracene

  Masaaki Baba, Koichi Mori, Motohisa Saito, Yasuyuki Kowaka, Yuki Noma, Shunji Kasahara, Takaya Yamanaka, Katsuhiko Okuyama, Takayoshi Ishimoto, Umpei Nagashima

  Mar. 2009, JOURNAL OF PHYSICAL CHEMISTRY A, 113(11) (11), 2366 - 2371, English

  [Refereed]

  Scientific journal


• Structure and excited-state dynamics of anthracene: Ultrahigh-resolution spectroscopy and theoretical calculation

  Masaaki Baba, Motohisa Saitoh, Kunio Taguma, Keisuke Shinohara, Kazuto Yoshida, Yosuke Semba, Shunji Kasahara, Naofumi Nakayama, Hitoshi Goto, Takayoshi Ishimoto, Umpei Nagashima

  2009, Journal of Chemical Physics, 130(13) (13), English

  [Refereed]

  Scientific journal


• High resolution spectroscopy and Zeeman effect of the S1 <- S0 transition

  Hajime Kato, Masaaki Baba, Shunji Kasahara

  Mar. 2007, BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 80(3) (3), 456 - 463, English

  [Refereed]

  Scientific journal


• Vibronic structure in the S-1-S-0 transition of jet-cooled dibenzofuran

  Masaaki Baba, Koichi Mori, Michiru Yamawaki, Kumi Akita, Masahide Ito, Shunji Kasahara, Takaya Yamanaka

  Aug. 2006, JOURNAL OF PHYSICAL CHEMISTRY A, 110(33) (33), 10000 - 10005, English

  [Refereed]

  Scientific journal


• Sub-Doppler high-resolution excitation spectroscopy of the S-1 <- S-0 transition of dibenzofuran

  Michiru Yamawaki, Yoshio Tatamitani, Atsushi Doi, Shunji Kasahara, Masaaki Baba

  Jul. 2006, JOURNAL OF MOLECULAR SPECTROSCOPY, 238(1) (1), 49 - 55, English

  [Refereed]

  Scientific journal


• Doppler-free two-photon excitation spectroscopy and the Zeeman effect in the "channel three" region of C6H6

  DY Baek, JH Chen, JG Wang, A Doi, S Kasahara, M Baba, H Kato

  Jan. 2006, BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 79(1) (1), 75 - 79, English

  [Refereed]

  Scientific journal


• Doppler-free two-photon excitation spectroscopy and the Zeeman effects. Perturbations in the 14(0)(1) and 1(0)(1)14(0)(1) bands of the S-1 <- S-0 transition of C6D6

  DY Baek, JG Wang, A Doi, S Kasahara, H Kato, M Baba

  Aug. 2005, JOURNAL OF PHYSICAL CHEMISTRY A, 109(32) (32), 7127 - 7133, English

  [Refereed]

  Scientific journal


• Doppler-free two-photon excitation spectroscopy and the Zeeman effects of the S-1 B-1(1u)(v(21)=1)<- S-0 (1)A(g)(v=0) band of naphthalene-d(8)

  M Okubo, JG Wang, M Baba, M Misono, S Kasahara, H Kato

  Apr. 2005, JOURNAL OF CHEMICAL PHYSICS, 122(14) (14), English

  [Refereed]

  Scientific journal


• Sub-Doppler rotationally resolved spectroscopy of lower vibronic bands of benzene with Zeeman effects

  DOI A, KASAHARA Shunji, KATO Hajime, BABA Masaaki

  2005, J. Phys. Chem., 120, 6439-6448, English

  [Refereed]

  Scientific journal


• Doppler-free two-photon excitation spectroscopy and the Zeeman effect of the 14(0)(1) band of the S-1 B-1(2u)<- S-0 (1)A(1g) transition of benzene-d6

  JG Wang, A Doi, S Kasahara, H Kato, M Baba

  Nov. 2004, JOURNAL OF CHEMICAL PHYSICS, 121(18) (18), 9188 - 9190, English

  [Refereed]

  Scientific journal


• Sub-Doppler rotationally resolved spectroscopy of the S-1 B-1(2u)(nu(6)=1) <- S-0 (1)A(1g) (nu=0) bands of benzene and benzene-d(6)

  A Doi, M Baba, S Kasahara, H Kato

  Oct. 2004, JOURNAL OF MOLECULAR SPECTROSCOPY, 227(2) (2), 180 - 186, English

  [Refereed]

  Scientific journal


• Sub-Doppler high-resolution excitation spectroscopy of dibenzo-p-dioxin

  M Baba, A Doi, Y Tatamitani, S Kasahara, H Kato

  Feb. 2004, JOURNAL OF PHYSICAL CHEMISTRY A, 108(8) (8), 1388 - 1392, English

  [Refereed]

  Scientific journal


• The E(4) (1)Pi(u) state in K-2 and its perturbations

  P Kowalczyk, S Kasahara, MH Kabir, H Kato

  Aug. 2003, JOURNAL OF MOLECULAR SPECTROSCOPY, 220(2) (2), 162 - 169, English

  [Refereed]

  Scientific journal


• Doppler-free laser polarization and optical-optical double resonance polarization labeling spectroscopies of a large molecule: Naphthalene

  MH Kabir, S Kasahara, W Demtroder, Y Tatamitani, A Doi, H Kato, M Baba

  Aug. 2003, JOURNAL OF CHEMICAL PHYSICS, 119(7) (7), 3691 - 3698, English

  [Refereed]

  Scientific journal


• Orientation observed by Zeeman spectra of dissociated atoms and the interference in photoexcitations

  Y Kimura, S Kasahara, H Kato, M Baba

  Jun. 2003, PHYSICAL REVIEW A, 67(6) (6), English

  [Refereed]

  Scientific journal


• Doppler-free high resolution laser spectroscopy of the Na-2 C (1)Pi(u) state: Perturbation and predissociation

  MH Kabir, T Shinano, S Kasahara

  May 2003, JOURNAL OF CHEMICAL PHYSICS, 118(17) (17), 7817 - 7822, English

  [Refereed]

  Scientific journal


• Orientation observed by Zeeman spectra of dissociated atoms and the interference in photoexcitations

  Yasuyuki Kimura, Shunji Kasahara, Hajime Katô, Masaaki Baba

  2003, Physical Review A - Atomic, Molecular, and Optical Physics, 67(6) (6), 7, English

  [Refereed]

  Scientific journal


• Doppler-free high resolution laser spectroscopies of the naphthalene molecule

  MH Kabir, S Kasahara, W Demtroder, Y Tatamitani, M Okubo, M Misono, J Wang, M Baba, DL Joo, J O'Reilly, A Doi, Y Kimura, H Kato

  Oct. 2002, CHEMICAL PHYSICS, 283(1-2) (1-2), 237 - 247, English

  [Refereed]

  Scientific journal


• Doppler-free high resolution spectroscopy of carbon disulphide and the effects of a magnetic field

  Y Kimura, A Doi, M Misono, S Kasahara, H Kato, M Baba, S Nagakura

  Apr. 2002, MOLECULAR PHYSICS, 100(8) (8), 1161 - 1170, English

  [Refereed]

  Scientific journal


• Doppler-free two-photon absorption spectroscopy of trans-glyoxal under magnetic fields up to 6 T

  M Misono, JG Wang, M Okubo, S Kasahara, H Kato, M Baba

  Apr. 2002, MOLECULAR PHYSICS, 100(8) (8), 1147 - 1154, English

  [Refereed]

  Scientific journal


• Nonadiabatic g-u mixing of the F (1)Sigma(+)(g) and 2 (1)Sigma(+)(u) states of (LiLi)-Li-6-Li-7

  L Li, S Kasahara, MH Kabir, Y Sahashi, M Baba, H Kato

  Jun. 2001, JOURNAL OF CHEMICAL PHYSICS, 114(24) (24), 10805 - 10810, English

  [Refereed]

  Scientific journal


• Interference effects in the predissociation of the Cs2C (1)Pi(u) and (2)(3)Pi(u) states through the dissociative (2)(3)Sigma(+)(u) state

  Y Kimura, H Lefebvre-Brion, S Kasahara, H Kato, M Baba, R Lefebvre

  Nov. 2000, JOURNAL OF CHEMICAL PHYSICS, 113(19) (19), 8637 - 8642, English

  [Refereed]

  Scientific journal


• Doppler-free UV-visible optical-optical double resonance polarization spectroscopy of the 2 (1)Sigma(+)(u) double minimum state and the C (1)Pi(u) state of Li-2

  S Kasahara, P Kowalczyk, MH Kabir, M Baba, H Kato

  Oct. 2000, JOURNAL OF CHEMICAL PHYSICS, 113(15) (15), 6227 - 6234, English

  [Refereed]

  Scientific journal


• Perturbation in the V B-1(2) state of CS2 and the effects of an applied magnetic field

  S Kasahara, N Fujita, Y Kimura, H Kato, M Baba, S Nagakura

  Jul. 2000, JOURNAL OF CHEMICAL PHYSICS, 113(1) (1), 107 - 119, English

  [Refereed]

  Scientific journal


• Variation of the linewidth of the A0(+)<- X (1)Sigma(+) transition of NaI

  M Baba, T Kokita, S Kasahara, H Kato

  Dec. 1999, JOURNAL OF CHEMICAL PHYSICS, 111(21) (21), 9574 - 9576, English

  [Refereed]

  Scientific journal


• Doppler-free optical-optical double resonance polarization spectroscopy of the (KRb)-K-39-Rb-85 1 (1)Pi and 2 (1)Pi states

  S Kasahara, C Fujiwara, N Okada, H Kato, M Baba

  Nov. 1999, JOURNAL OF CHEMICAL PHYSICS, 111(19) (19), 8857 - 8866, English

  [Refereed]

  Scientific journal


• M-resolved Zeeman spectra of rotational lines in the 9U band of CS2, and splittings of the (3)A(2)((3)Delta(u)) state

  H Kato, Y Taroura, S Kasahara, M Baba

  Mar. 1999, JOURNAL OF CHEMICAL PHYSICS, 110(10) (10), 4724 - 4729, English

  [Refereed]

  Scientific journal


• Doppler-free optical-optical double resonance polarization spectroscopy of the Cs-2(2)(3)Pi(0+u), (2)(3)Pi(1u), C-1 Pi(u), and 1(u) states

  S Kasahara, K Otsuka, M Baba, H Kato

  Sep. 1998, JOURNAL OF CHEMICAL PHYSICS, 109(9) (9), 3393 - 3400, English

  [Refereed]

  Scientific journal


• Ultrahigh-resolution spectroscopy of the A(1)Au <- X(1)A(g) transition of trans-glyoxal

  H Kato, K Sawa, H Kuwano, S Kasahara, M Baba, S Nagakura

  Sep. 1998, JOURNAL OF CHEMICAL PHYSICS, 109(12) (12), 4798 - 4806, English

  Scientific journal


• Doppler-free two-photon absorption spectroscopy of the A(1)A(u)<-X(1)A(g) transition of trans-glyoxal

  H Kato, T Oonishi, K Nishizawa, S Kasahara, M Baba

  May 1997, JOURNAL OF CHEMICAL PHYSICS, 106(20) (20), 8392 - 8400, English

  [Refereed]

  Scientific journal


• Doppler-free Optical-Optical Double Resonance Spectrosocopy

  KASAHARA Shunji, BABA Masaaki, KATO Hajime

  The Spectroscopical Society of Japan, Apr. 1997, Bunko Kenkyu, 46(2) (2), 70 - 82, Japanese


• High resolution laser spectroscopy of the Cs-2 C (1)Pi(u) state: Perturbation and predissociation

  S Kasahara, Y Hasui, K Otsuka, M Baba, W Demtroder, H Kato

  Mar. 1997, JOURNAL OF CHEMICAL PHYSICS, 106(12) (12), 4869 - 4876, English

  [Refereed]

  Scientific journal


• Perturbation and predissociation near the dissociation limit of the B-1 Pi state of (NaK)-Na-23-K-39

  S Kasahara, M Shibata, M Baba, H Kato

  Jan. 1997, JOURNAL OF PHYSICAL CHEMISTRY A, 101(4) (4), 422 - 428, English

  [Refereed]

  Scientific journal


• Optical-optical double resonance polarization spectroscopy of the B-1 Pi state of (KRb)-K-39-Rb-85

  N Okada, S Kasahara, T Ebi, M Baba, H Kato

  Sep. 1996, JOURNAL OF CHEMICAL PHYSICS, 105(9) (9), 3458 - 3465, English

  [Refereed]

  Scientific journal


• High-resolution laser spectroscopy of the X(1)Sigma(+) and (1)(3)Sigma(+) states of (NaRb)-Na-23-Rb-85 molecule

  S Kasahara, T Ebi, M Tanimura, H Ikoma, K Matsubara, M Baba, H Kato

  Jul. 1996, JOURNAL OF CHEMICAL PHYSICS, 105(4) (4), 1341 - 1347, English

  [Refereed]

  Scientific journal


• PERTURBATIONS, INTENSITY ANOMALIES, AND LINE BROADENING OF (NAK)-NA-23-K-39 STUDIED BY OPTICAL-OPTICAL DOUBLE-RESONANCE POLARIZATION SPECTROSCOPY

  H IKOMA, S KASAHARA, H KATO

  Jul. 1995, MOLECULAR PHYSICS, 85(4) (4), 799 - 820, English

  [Refereed]

  Scientific journal


• Sub-Doppler optical-optical double resonance polarization spectroscopy and collisional energy transfer

  Shunji Kasahara, Heiji Ikoma, Hajime Katô

  Sep. 1994, Acta Physica Hungarica, 74(4) (4), 329 - 339, English

  [Refereed]

  Scientific journal


• OPTICAL-OPTICAL DOUBLE-RESONANCE POLARIZATION SPECTROSCOPY OF HIGHLY EXCITED-STATES OF NA-23 K-39

  S KASAHARA, H IKOMA, H KATO

  Jan. 1994, JOURNAL OF CHEMICAL PHYSICS, 100(1) (1), 63 - 69, English

  [Refereed]

  Scientific journal


• HIGH-RESOLUTION LASER SPECTROSCOPY OF THE B1-PI-X1-SIGMA+ TRANSITION OF NA-23-RB-85

  YC WANG, M KAJITANI, S KASAHARA, M BABA, K ISHIKAWA, H KATO

  Nov. 1991, JOURNAL OF CHEMICAL PHYSICS, 95(9) (9), 6229 - 6237, English

  [Refereed]

  Scientific journal


• HIGH-RESOLUTION LASER SPECTROSCOPY UP TO THE DISSOCIATION LIMIT OF THE NAK B1-PI STATE, AND PREDISSOCIATION NEAR THE DISSOCIATION LIMIT

  S KASAHARA, M BABA, H KATO

  Jun. 1991, JOURNAL OF CHEMICAL PHYSICS, 94(12) (12), 7713 - 7720, English

  [Refereed]

  Scientific journal


• DOPPLER-FREE HIGH-RESOLUTION LASER SPECTROSCOPY OF THE CS2 D 1-SIGMA-MU+ STATE AND THE PREDISSOCIATION

  H KATO, T KOBAYASHI, M CHOSA, T NAKAHORI, T IIDA, S KASAHARA, M BABA

  Feb. 1991, JOURNAL OF CHEMICAL PHYSICS, 94(4) (4), 2600 - 2607, English

  [Refereed]

  Scientific journal

• Anisotropic Predissociation of the Cs_2 Molecules in the Magnetic Field.

  Kimura Y., Baba M., Kasahara S., Kato H.

  The Physical Society of Japan (JPS), 10 Sep. 2000, Meeting abstracts of the Physical Society of Japan, 55(2) (2), 139 - 139, Japanese


• High-precision wavelength standard atlas by the Doppler-free spectrum of iodine molecule.

  加藤肇, 笠原俊二, 石川潔, 御園雅俊, KABIR M H, O’REILLY J, 木村恭之, 桑野裕至, 馬場正昭

  1999, 分子構造総合討論会講演要旨集, 1999


• 解難限界直前におけるNa_2分子のレーザー分光

  笠原 俊二

  Nov. 1998, 化学と工業 = Chemistry and chemical industry, 51(11) (11), 1781 - 1781, Japanese

• 第５版実験化学講座第9巻「物質の構造Ⅰ 分光 上」

  S Kasahara

  Single work, 丸善, 2005, English

  Scholarly book

• フルオレンS1←S0遷移の高分解能レーザー分光： S1状態での摂動

  笠原俊二, ミニック留久, 黒田真司

  第25回分子分光研究会, Nov. 2025, Japanese

  Oral presentation


• Analysis of High-Resolution Spectra of S1←S0 Transition of Chloronaphthalenes

  40th Symposium on Chemical Kinetics and Dynamics, Jun. 2025, English

  Poster presentation


• 14NO2ラジカルの16218 cm-1バンドの高分解能レーザー分光：2B2状態とC2A2状態の相互作用

  多田康平, 虎尾さくら, 南出歩果, 吉澤匠, 笠原俊二

  第24回分子分光研究会, Dec. 2024, Japanese

  Oral presentation


• クロロナフタレンのS1←S0遷移の高分解能スペクトルの解析

  清水陽, 山本涼, 神澤賢一郎, 笠原俊二

  第24回分子分光研究会, Dec. 2024, Japanese

  Oral presentation


• 高分解能レーザー分光法を用いたカルバゾールのS1←S0遷移の研究

  大岩本昇太, 上田翔也, 黒田真司, 笠原俊二

  第24回分子分光研究会, Dec. 2024, Japanese

  Oral presentation


• フルオレンのS1←S0遷移の高分解能レーザー分光： 204 cm-1バンドにおける摂動の解析

  ミニック留久, 黒田真司, 笠原俊二

  第24回分子分光研究会, Dec. 2024, Japanese

  Oral presentation


• 高分解能レーザー分光によるフルオレンのS1←S0遷移： 204 cm-1バンドにおける摂動

  ミニック留久, 黒田真司, 笠原俊二

  第18回分子科学討論会, Sep. 2024, Japanese

  Poster presentation


• 分子線・レーザー交差法によるアセトアルデヒドS1←S0遷移の高分解能分光

  笠原俊二, 谷口凜, 中島康輔, 清水陽, 馬場正昭

  第18回分子科学討論会, Sep. 2024, Japanese

  Poster presentation


• 分子線レーザー交差法によるtrans-スチルベンのS1←S0遷移の研究

  清水陽, 笠原俊二, 馬場正昭, 中山尚史

  第18回分子科学討論会, Sep. 2024, Japanese

  Oral presentation


• 14NO2ラジカルの615 nm領域の高分解能レーザー分光

  多田康平, 虎尾さくら, 南出歩果, 吉澤匠, 笠原俊二

  第18回分子科学討論会, Sep. 2024, Japanese

  Oral presentation


• High-Resolution Laser Spectroscopy of A-X Transition of NO2: Anomalies in the 16218 cm-1 band

  S. Kasahara, S. Torao, H. Minamide, T. Yoshizawa, K. Tada

  39th Symposium on Chemical Kinetics and Dynamics, Jun. 2024, English

  Poster presentation


• High-resolution Laser spectroscopy of S1←S0 electronic transition of carbazole

  S. Ooiwamoto, S. Ueda, K.Kuroda, S.Kasahara

  39th Symposium on Chemical Kinetics and Dynamics, Jun. 2024, English

  Poster presentation


• The study of trans-stilbene S1←S0 transition by High-Resolution Laser Spectroscopy

  A. Shimizu, S. Kasahara, M. Baba, N. Nakayama

  39th Symposium on Chemical Kinetics and Dynamics, Jun. 2024, English

  Poster presentation


• The analysis of S1←S0 electronic transitions in Fluorene by using high-resolution laser spectroscopy; perturbation analysis in 204 cm-1 band S1←S0 transition

  L. Minik, S. Kuroda, S.Kasahara

  39th Symposium on Chemical Kinetics and Dynamics, Jun. 2024, English

  Poster presentation


• 高分解能分光法によるアセトアルデヒドの大振幅振動の研究

  谷口凜, 中島康輔, 清水陽, 笠原俊二, 馬場正昭

  第23回分子分光研究会, Nov. 2023, Japanese, 福岡大学, Japan, Domestic conference

  Oral presentation


• 分子線を用いた高分解能分光法によるtrans-スチルベンのS1←S0遷移の研究

  清水陽, 笠原俊二, 馬場正昭, 中山尚史

  第23回分子分光研究会, Nov. 2023, Japanese, 福岡大学, Japan, Domestic conference

  Oral presentation


• The study of trans-stilbene S1←S0 transition by using High-Resolution Laser Spectroscopy

  A. Shimizu, S. Kasahara, M. Baba, N. Nakayama

  7th Asian Workshop on Molecular Spectroscopy, Nov. 2023, English, Hokkaido University (Japan-site), Japan, International conference

  Oral presentation


• 分子線によるtrans-スチルベンの電子遷移の高分解能レーザー分光

  清水陽, 笠原俊二, 馬場正昭, 中山尚史

  2023年度日本分光学会年次講演会, Oct. 2023, Japanese, 神戸大学, Japan, Domestic conference

  Poster presentation


• カルバゾールのS1←S0遷移の高分解能レーザー分光

  大岩本昇太, 上田翔也, 黒田真司, 笠原俊二

  第17回分子科学討論会, Sep. 2023, Japanese, 大阪大学, Japan, Domestic conference

  Poster presentation


• 分子線によるtrans-スチルベンのS1←S0遷移の高分解能レーザー分光

  清水陽, 笠原俊二, 馬場正昭, 中山尚史

  第17回分子科学討論会, Sep. 2023, Japanese, 大阪大学, Japan, Domestic conference

  Oral presentation


• フルオレンのS1←S0電子遷移の高分解能レーザー分光

  ミニック留久, 黒田真司, 笠原俊二

  第17回分子科学討論会, Sep. 2023, Japanese, 大阪大学, Japan, Domestic conference

  Poster presentation


• 単一モード紫外レーザーによるアセトアルデヒドのS1←S0遷移の高分解能レーザー分光

  谷口凜, 中島康輔, 清水陽, 笠原俊二, 馬場正昭

  第17回分子科学討論会, Sep. 2023, Japanese, 大阪大学, Japan, Domestic conference

  Poster presentation


• NO2ラジカルA-X遷移16218cm-1バンドの高分解能レーザー分光

  多田康平, 南出歩果, 吉澤匠, 笠原俊二

  第17回分子科学討論会, Sep. 2023, Japanese, 大阪大学, Japan, Domestic conference

  Oral presentation


• Research of trans-stilbene by high-resolution laser spectroscopy of the S1←S0 transition

  A. Shimizu, S. Kasahara, M. Baba, N. Nakayama

  38th Symposium on Chemical Kinetics and Dynamics, Jun. 2023, English, Kyusyu University, Japan, International conference

  Poster presentation


• NO2ラジカルのA-X遷移の高分解能レーザー分光

  笠原俊二, 乗井一帆, 南出歩果, 多田康平

  第22回分子分光研究会, Nov. 2022, Japanese, 東京理科大学, Japan, Domestic conference

  Oral presentation


• アセトアルデヒドのS1←S0遷移の高分解能レーザー分光：S1状態における大振幅振動

  谷口凜, 中島康輔, 清水陽, 笠原俊二, 馬場正昭

  第22回分子分光研究会, Nov. 2022, Japanese, 東京理科大学, Japan, Domestic conference

  Oral presentation


• trans-スチルベンのS1←S0遷移の高分解能レーザー分光

  清水陽, 笠原俊二, 馬場正昭, 中山尚史

  第22回分子分光研究会, Nov. 2022, Japanese, 東京理科大学, Japan, Domestic conference

  Oral presentation


• 単一モード紫外レーザーによるジベンゾチオフェンの高分解能レーザー分光

  細見一輝, 笠原俊二, 馬場正昭

  第16回分子科学討論会, Sep. 2022, Japanese, 慶応義塾大学, Japan, Domestic conference

  Poster presentation


• 高分解能レーザー分光によるtrans-スチルベンのS1←S0遷移の研究

  清水陽, 笠原俊二, 馬場正昭, 中山尚史

  第16回分子科学討論会, Sep. 2022, Japanese, 慶応義塾大学, Japan, Domestic conference

  Oral presentation


• NO2ラジカルA-X遷移16200 cm-1領域の高分解能レーザー分光

  笠原俊二, 乗井一帆, 南出歩果, 多田康平

  第16回分子科学討論会, Sep. 2022, Japanese, 慶応義塾大学, Japan, Domestic conference

  Oral presentation


• 単一モード紫外レーザーによるアセトアルデヒドの高分解能分光

  谷口凜, 中島康輔, 清水陽, 笠原俊二, 馬場正昭

  第16回分子科学討論会, Sep. 2022, Japanese, 慶応義塾大学, Japan, Domestic conference

  Poster presentation


• High-resolution laser spectroscopy of S1←S0 transition of trans-stilbene: nonplanar structure in the ground state

  A. Shimizu, K. Nakajima, S. Kasahara, M. Misono, M. Baba

  2022 International Symposium on Molecular Spectroscopy, Jun. 2022, English, Illinois University (Web上での発表), United States, International conference

  Oral presentation


• High-resolution laser Spectroscopy of the S1←S0 transition of acetaldehyde

  K. Nakajima, S. Kasahara, A. Shimizu, R. Taniguchi, M. Baba

  2022 International Symposium on Molecular Spectroscopy, Jun. 2022, English, Illinois University (Web上での発表), United States, International conference

  Oral presentation


• High-Resolution Laser Spectroscopy of S1←S0 transition of trans-stilbene

  A. Shimizu, K. Nakajima, S. Kasahara, M. Baba, N. Nakayama

  37th Symposium on Chemical Kinetics and Dynamics, Jun. 2022, English, Tohoku University, Japan, International conference

  Poster presentation


• High-Resolution Laser Spectroscopy of S1←S0 transition of Acetaldehyde

  K. Nakajima, S. Kasahara, A. Shimizu, R. Taniguchi, M. Baba

  37th Symposium on Chemical Kinetics and Dynamics, Jun. 2022, English, Tohoku University, Japan, International conference

  Oral presentation


• 14NO2および15NO2ラジカルの高分解能レーザー分光

  笠原俊二, 乗井一帆, 細見一輝, 南出歩果, 多田康平

  第15回分子科学討論会, Sep. 2021, Japanese, 北海道大学(オンライン), Japan, Domestic conference

  Poster presentation


• ジベンゾチオフェンのS1←S0遷移の高分解能レーザー分光

  乗井一帆, 細見一輝, 川上琳太郎, 谷口凜, 笠原俊二, 馬場正昭

  第15回分子科学討論会, Sep. 2021, Japanese, 北海道大学(オンライン), Japan, Domestic conference

  Poster presentation


• trans-スチルベンのS1←S0遷移の超高分解能レーザー分光

  清水陽, 中島康輔, 笠原俊二, 馬場正昭

  第15回分子科学討論会, Sep. 2021, Japanese, 北海道大学(オンライン), Japan, Domestic conference

  Oral presentation


• 高分解能レーザー分光によるアセトアルデヒド分子の大振幅振動に関する研究

  中島康輔, 清水陽, 笠原俊二

  第15回分子科学討論会, Sep. 2021, Japanese, 北海道大学(オンライン), Japan, Domestic conference

  Oral presentation


• High-resolution laser spectroscopy of trans-stilbene: nonplanar structure in the ground state

  A. Shimizu, K. Nakajima, S. Kasahara, M. Misono, M. Baba

  2021 International Symposium on Molecular Spectroscopy, Jun. 2021, English, Illinois University (On line), United States, International conference

  Oral presentation


• Ultrahgh-resolution laser Spectroscopy of acetaldehyde: Torsion-inversion-rotation interaction in the excited state

  K. Nakajima, A. Shimizu, S. Kasahara, M. Misono, M. Baba

  2021 International Symposium on Molecular Spectroscopy, Jun. 2021, English, Illinois University (On line), United States, International conference

  Oral presentation


• Ultra high-resolution spectroscopy of trans-stilbene: nonplanar structure in the ground state

  A. Shimizu, K. Nakajima, S. Kasahara, N. Nakayama, M. Misono, M. Baba

  4th Asian Workshop on Molecular Spectroscopy, Mar. 2021, English, Kobe University (Online), Japan, International conference

  Oral presentation


• Ultrahgh-resolution Spectroscopy of acetaldehyde: Torsion-inversion-rotation interaction in the excited state

  K. Nakajima, A. Shimizu, S. Kasahara, M. Misono, M. Baba

  4th Asian Workshop on Molecular Spectroscopy, Mar. 2021, English, Kobe University (Online), Japan, International conference

  Oral presentation


• 15NO2のA-X遷移の高分解能レーザー分光

  乗井一帆, 南出歩果, 細見一輝, 笠原俊二

  第21回分子分光研究会, Mar. 2021, Japanese, 神戸大学(オンライン), Japan, Domestic conference

  Oral presentation


• trans-スチルベンのS1 1Bu←S0 1Ag遷移の超高分解能レーザー分光

  清水陽, 中島康輔, 乗井一帆, 南出歩果, 笠原俊二, 馬場正昭

  第14回分子科学討論会, Sep. 2020, Japanese, 大阪大学(オンライン), Japan, Domestic conference

  Oral presentation


• アセトアルデヒド分子のS1 (nπ *)←S0遷移の超高分解能レーザー分光

  中島康輔, 清水陽, 南出歩果, 乗井一帆, 笠原俊二, 馬場正昭

  第14回分子科学討論会, Sep. 2020, Japanese, 大阪大学(オンライン), Japan, Domestic conference

  Oral presentation


• アセトアルデヒドおよびアセトンのS1-S0遷移の高分解能レーザー分光

  清水陽, 中島康輔, 馬場正昭, 笠原俊二

  第20回分子分光研究会, Mar. 2020, Japanese, 北里大学(オンライン), Japan, Domestic conference

  Oral presentation


• アセトアルデヒドのS1-S0遷移の高分解能レーザー分光

  中島康輔, 清水陽, 馬場正昭, 笠原俊二

  第20回分子分光研究会, Mar. 2020, Japanese, 北里大学(オンライン), Japan, Domestic conference

  Oral presentation


• NO2ラジカルの610-630 nm領域の高分解能レーザー分光

  笠原俊二, 多田康平, 吉澤匠, 平田通啓

  第20回分子分光研究会, Mar. 2020, Japanese, 北里大学(オンライン), Japan, Domestic conference

  Oral presentation


• 14NO2ラジカルのA2B2-X2A1遷移の高分解能レーザー分光

  多田康平, 平田通啓, 吉澤匠, 清水陽, 中島康輔, 笠原俊二

  第13回分子科学討論会, Sep. 2019, Japanese, 名古屋大学, Japan, Domestic conference

  Oral presentation


• 高分解能レーザー分光によるフルオレンおよびカルバゾールのS1-S0遷移に関する研究

  笠原俊二, 黒田真司, 上田翔也

  第13回分子科学討論会, Sep. 2019, Japanese, 名古屋大学, Japan, Domestic conference

  Oral presentation


• High-Resolution Laser Spectroscopy of the S1←S0 transition of Fluorene and Carbazole

  S. Kasahara, S. Kuroda, S. Ueda

  74th International Symposium on Molecular Spectroscopy, Jun. 2019, English, Illinois University, United States, International conference

  Oral presentation


• High-Resolution Laser Spectroscopy of A-X Transition of Nitrogen Dioxide

  S. Kasahara, T. Yoshizawa, M. Hirata, K. Tada

  35th Symposium on Chemical Kinetics and Dynamics, Jun. 2019, English, 広島大学, Japan, International conference

  Poster presentation


• NO2およびNO3ラジカルの高分解能レーザー分光

  KASAHARA SHUNJI, 吉澤 匠, 平田 通啓, 多田 康平

  2019 年日本分光学会年次講演会, May 2019, Japanese, 京都大学 化学研究所, Domestic conference

  Oral presentation


• Rotationally-resolved high-reaolution laser spectroscopy of S1-S0 transition of fluorene: Perturbation in the S1 state

  ○KASAHARA, Shunji, KURODA, Shinji

  日本化学会 第99春季年会 (2019), Mar. 2019, English, 甲南大学 岡本キャンパス, Domestic conference

  Oral presentation


• NO2ラジカルのA-X遷移の高分解能レーザー分光

  KASAHARA SHUNJI, 吉澤 匠, 平田 通啓, 多田 康平

  第19回分子分光研究会, Mar. 2019, Japanese, 静岡大学, Domestic conference

  Oral presentation


• NO2ラジカルの電子遷移における超微細分裂

  KASAHARA SHUNJI, 吉澤 匠, 平田 通啓, 多田 康平

  第21回分子科学討論会2018, Sep. 2018, Japanese, 福岡国際会議場, Domestic conference

  Oral presentation


• HIgh-resolution laser spectroscopy of nitrogen dioxide in the region of 14500-16800 cm-1

  S. Kasahara, T. Yoshizawa, M. Hirata, K. Tada

  25th International Conference on High Resolution Molecular Spectroscopy, Sep. 2018, English, Bilbao, Spain, International conference

  Poster presentation


• High-Resolution Laser Spectroscopy of S1←S0 transition of Fluorene and Carbazole

  S. Kasahara, S. Kuroda, S. Ueda

  34th Symposium on Chemical Kinetics and Dynamics, Jun. 2018, English, Kizugawa, Japan, International conference

  Poster presentation


• フルオレンおよびカルバゾールのS1-S0遷移の高分解能レーザー分光

  黒田 真司, 上田 翔也, KASAHARA SHUNJI

  第18回分子分光研究会, Mar. 2018, Japanese, 文部科学省 研究交流センター（つくば市）, Domestic conference

  Oral presentation


• 分子線を用いたフルオレンS1←S0遷移の高分解能レーザー分光

  黒田 真司, KASAHARA SHUNJI

  第11回分子科学討論会2017仙台, Sep. 2017, Japanese, 東北大学 川内北キャンパス, Domestic conference

  Oral presentation


• NO2ラジカルの595-686 nm 領域の高分解能レーザー分光

  KASAHARA SHUNJI, 平田 通啓, 吉澤 匠, 上田 翔也, 多田 康平

  第11回分子科学討論会2017仙台, Sep. 2017, Japanese, 東北大学 川内北キャンパス, Domestic conference

  Poster presentation


• Rotationally-resolved high-resolution laser spectroscopy of S1-S0 transition of fluorene

  S. Kasahara, S. Kuroda

  34th International Symposium on Free Radicals, Aug. 2017, English, Shonan Village Center, International conference

  Oral presentation


• Rotationally-resolved high resolution laser spectroscopy of fluorine

  Shinji Kuroda, Shunji Kasahara

  International Symposium on "Diversity of Chemical Reaction Dynamics", Jul. 2017, English, Himeji, International conference

  Poster presentation


• Hyperfine-resolved high-resolution laser spectroscopy of 14NO2 in 14500-16800 cm-1

  Shunji Kasahara

  International Symposium on "Diversity of Chemical Reaction Dynamics", Jul. 2017, English, Himeji, International conference

  Poster presentation


• Hyperfine interaction in the excited electronic state of NO2 radical

  ○Michihiro HIRATA, Kohei TADA, Shunji KASAHARA

  第33回化学反応討論会, Jun. 2017, English, 名古屋大学 東山キャンパス, Domestic conference

  Poster presentation


• High-resolution laser spectroscopy of the S1←S0 transition of fluorene

  ○Shinji KURODA, Shunji KASAHARA

  第33回化学反応討論会, Jun. 2017, English, 名古屋大学 東山キャンパス, Domestic conference

  Poster presentation


• 単一モード紫外レーザーによるフルオレンの高分解能分光

  黒田 真司, KASAHARA SHUNJI

  第17回分子分光研究会, May 2017, Japanese, 京都大学 北部キャンパス, Domestic conference

  Oral presentation


• High-resolution laser spectroscopy and Zeeman effect of nitrate radical

  ○Kohei Tada, Michihiro Hirata, Shunji Kasahara, Takashi Ishiwata, Eizi Hirota

  The 1st Meeting Asian Workshop on Molecular Spectroscopy, May 2017, English, 京都大学 北部キャンパス, International conference

  Oral presentation


• 分子線を用いたフルオレンのS1←S0遷移における高分解能レーザー分光

  黒田 真司, KASAHARA SHUNJI

  第7回サイエンスフロンティア研究発表会, Oct. 2016, Japanese, 神戸大学, Domestic conference

  Poster presentation


• フルオレンのS1←S0遷移の高分解能レーザー分光

  黒田 真司, 中野 拓海, KASAHARA SHUNJI

  第10回分子科学討論会, Sep. 2016, Japanese, 神戸ファッションマート, Domestic conference

  Poster presentation


• NO3ラジカルB状態の高分解能レーザー分光

  平田 通啓, KASAHARA SHUNJI, 多田 康平, 石渡 孝, 廣田 榮治

  第10回分子科学討論会, Sep. 2016, Japanese, 神戸ファッションマート, Domestic conference

  Poster presentation


• NO2ラジカルの615-670 nm領域の高分解能レーザー分光

  KASAHARA SHUNJI, 多田 康平, 平田 通啓

  第10回分子科学討論会, Sep. 2016, Japanese, 神戸ファッションマート, Domestic conference

  Poster presentation


• High-resolution laser spectroscopy and Zeeman effect of S1←S0 transition of naphthalene and Cl-naphthalenes

  ○Shunji Kasahara, Ryo Yamamoto, Kenichiro Kanzawa, Takumi Nakano

  International Symposium: Recent Progress in molecular Spectroscopy and Dynamics, Jul. 2016, English, 九州大学 西新プラザ, International conference

  Poster presentation


• High-resolution laser spectroscopy and Zeeman effect of NO3 radical: The vibrationally excited state

  ○Michihiro Hirata, Shunji Kasahara, Kohei Tada, Takashi Ishiwata, Eizi Hirota

  International Symposium: Recent Progress in molecular Spectroscopy and Dynamics, Jul. 2016, English, 九州大学 西新プラザ, International conference

  Poster presentation


• Rotationally-resolved high resolution laser spectroscopy of the S1←S0 transition of fluorene

  ○KURODA, Shinji, NAKANO, Takumi, KASAHARA, Shunji

  32nd Symposium on Chemical Kinetics and Dynamics, Jun. 2016, English, 大宮ソニックシティ, International conference

  Poster presentation


• Rotationally-resolved high resolution laser spectroscopy of NO3 radical: 628 nm vibronic band of B-X transition

  ○HIRATA, Michihiro, KASAHARA, Shunji, TADA, Kohei, ISHIWATA, Takashi, HIROTA, Eizi

  32nd Symposium on Chemical Kinetics and Dynamics, Jun. 2016, English, 大宮ソニックシティ, International conference

  Poster presentation


• High-resolution laser spectroscopy of the B-X transition of 14NO3 radical: Vibrationally excited states of the B state

  ○Shunji Kasahara, Kohei Tada, Michihiro Hirata, Hitomi matsubara, Takashi Ishiwata, Eizi Hirota

  71st Internationsl Symposium on Molecular Spectroscopy, Jun. 2016, English, Illinois University, International conference

  Oral presentation


• 高分解能レーザー分光によるフルオレンのS1←S0遷移に関する研究

  黒田 真司, 中野 拓海, KASAHARA SHUNJI

  第16回分子分光研究会, May 2016, Japanese, 東京工業大学, Domestic conference

  Oral presentation


• NO3ラジカル B-X遷移 15900 cm-1 バンドの高分解能レーザー分光

  平田 通啓, KASAHARA SHUNJI, 多田 康平, 石渡 孝, 廣田 榮治

  第16回分子分光研究会, May 2016, Japanese, 東京工業大学, Domestic conference

  Oral presentation


• NO3ラジカルのB 2E' ← X 2A2'遷移の高分解能レーザー分光

  平田通啓, 笠原俊二, 多田康平, 石渡孝, 廣田榮治

  第96回日本化学会春季年会, Mar. 2016, Japanese, 同志社大, Domestic conference

  Oral presentation


• ナフタレンS1-S0遷移の高分解能レーザー分光：振電バンドの測定

  中野拓海, 黒田真司, 山本涼, 笠原俊二

  第9回分子科学討論会, Sep. 2015, Japanese, 東工大, Domestic conference

  Poster presentation


• NO2およびNO3の可視領域の高分解能レーザー分光

  笠原俊二, 多田康平, 松原瞳, 石渡孝, 廣田榮治

  第9回分子科学討論会, Sep. 2015, Japanese, 東工大, Domestic conference

  Oral presentation


• High-Resolution Laser Spectroscopy of the S1←S0 Transition of Cl-Naphthalenes

  S. Kasahara, R. Yamamoto, K. Kanzawa

  70th International Symposium on Molecular Spectroscopy, Jun. 2015, English, Illinois, USA, International conference

  Oral presentation


• High-Resolution Laser Spectroscopy of the B-X transition of 14NO3 and15NO3 Radicals

  K. Tada, S. Kasahara, T. Ishiwata, E. Hirota

  31st Symposium on Chemical Kinetics and Dynamics, Jun. 2015, Japanese, International conference

  Poster presentation


• High-Resolution Laser Spectroscopy of S1←S0 Transition of 1-Cl and 2-Cl Naphthalene

  S. Kasahara, R. Yamamoto, K. Kanzawa

  31st Symposium on Chemical Kinetics and Dynamics, Jun. 2015, Japanese, International conference

  Poster presentation


• High-resolution laser spectroscopy of S1-S0 transition of naphthalene: measurement of vibronic bands

  T. Nakano, R. Yamamoto, S. Kasahara

  31st Symposium on Chemical Kinetics and Dynamics, Jun. 2015, Japanese, International conference

  Poster presentation


• High-resolution laser spectroscopy of S1-S0 transition of naphthalene: measurement of Vibrationally Excited states

  T. Nakano, R. Yamamoto, S. Kasahara

  70th International Symposium on Molecular Spectroscopy, Jun. 2015, English, Illinois, USA, International conference

  Oral presentation


• High-resolution laser spectroscopy of nitrate radical: vibrationally excited states of the B2E’ state

  H. Matsubara, K. Tada, T. takashino, S. Kasahara, T. Ishiwata, E. Hirota

  31st Symposium on Chemical Kinetics and Dynamics, Jun. 2015, Japanese, International conference

  Poster presentation


• High-Resolution Laser Spectroscopy of 14NO3 Radical: Vibrationally Excited states of the B2E’ state

  K. Tada, S. Kasahara, T. Ishiwata, E. Hirota

  70th International Symposium on Molecular Spectroscopy, Jun. 2015, English, Illinois, USA, International conference

  Oral presentation


• 単一モード紫外レーザーによるクロロナフタレン分子の高分解能分光

  笠原俊二, 山本涼, 神澤賢一郎

  平成27年度日本分光学会年次講演会, May 2015, Japanese, 東工大, Domestic conference

  Oral presentation


• 高分解能レーザー分光によるクロロナフタレン分子のS1←S0遷移に関する研究

  笠原俊二, 山本涼, 神澤賢一郎

  第15回分子分光研究会, May 2015, Japanese, 福岡, Domestic conference

  Oral presentation


• 14NO3、15NO3ラジカルのB-X遷移の高分解能レーザー分光と磁場効果

  多田康平, 松原瞳, 笠原俊二, 石渡孝, 廣田榮治

  第15回分子分光研究会, May 2015, Japanese, 福岡, Domestic conference

  Oral presentation


• 14NO3および15NO3ラジカルのB-X遷移の高分解能レーザー分光

  多田康平, 笠原俊二, 石渡孝, 廣田榮治

  平成27年度日本分光学会年次講演会, May 2015, Japanese, 東工大, Domestic conference

  Oral presentation


• High-resolution laser spectroscopy and Zeeman effect of free radical NO3

  TADA Kohei, KASHIHARA Wataru, KASAHARA Shunji, BABA Masaaki, ISHIWATA Takashi, HIROTA Eizi

  Indo-Japan Joint Workshop on "Frountiers in Molecular Spectroscopy: Fundamentals and Applications to Material and Biology", Nov. 2014, English, International conference

  Oral presentation


• ナフタレンS1-S0遷移の振電バンドにおける高分解能レーザー分光

  NAKANO Takumi, YAMAMOTO Ryo, KASAHARA Shunji

  第8回分子科学討論会, Sep. 2014, Japanese, Domestic conference

  Poster presentation


• クロロナフタレンのS1←S0遷移の高分解能レーザー分光～振動励起状態の観測～

  YAMAMOTO Ryo, KANZAWA Kenichiro, NAKANO Takumi, KASAHARA Shunji

  第8回分子科学討論会, Sep. 2014, Japanese, Domestic conference

  Poster presentation


• Rotationally-resolved high-resolution Laser spectroscopy of 15NO3 Radical

  TADA Kohei, KASAHARA Shunji, ISHIWATA Takashi, HIROTA Eizi

  23rd International Conference on High Resolution Molecular Spectroscopy, Sep. 2014, English, Bologna, Italy, International conference

  Poster presentation


• 15NO3ラジカルのB-X遷移の高分解能レーザー分光

  TADA Kohei, TERAMOTO Kanon, MATSUBARA Hitomi, KASAHARA Shunji, ISHIWATA Takashi, HIROTA Eizi

  第8回分子科学討論会, Sep. 2014, Japanese, Domestic conference

  Oral presentation


• 14NO3ラジカルB-X遷移の高分解能レーザー分光～振動励起状態の観測～

  KASAHARA Shunji, TADA Kohei, TAKASHINO Tsuyoshi, ISHIWATA Takashi, HIROTA Eizi

  第8回分子科学討論会, Sep. 2014, Japanese, Domestic conference

  Oral presentation


• Rotationally-resolved high-resolution laser spectroscopy of the B 2E' ← X 2A2' Transition of 15NO3 Radical

  TADA Kohei, KASAHARA Shunji, ISHIWATA Takashi, HIROTA Eizi

  69th International Symposium on Molecular Spectroscopy, Jun. 2014, English, Illinois, USA, International conference

  Oral presentation


• Rotationally-resolved high-resolution laser spectroscopy of the B 2E' ← X 2A2' transition of 14NO3 Radical

  KASAHARA Shunji, TADA Kohei, ISHIWATA Takashi, HIROTA Eizi

  69th International Symposium on Molecular Spectroscopy, Jun. 2014, English, Illinois, USA, International conference

  Oral presentation


• High-resolution UV Laser spectroscopy of S1 - S0 transition of chloronaphthalene

  YAMAMOTO Ryo, KANZAWA Kenichiro, NAKANO Takumi, KASAHARA Shunji

  30th Symposium on Chemical Kinetics and Dynamics, Jun. 2014, English, International conference

  Poster presentation


• High-resolution Laser Spectroscopy of the B-X Transition of Nitrate Radical

  TADA Kohei, TAKASHINO Tsuyoshi, TERAMOTO Kanon, KASAHARA Shunji, ISHIWATA Takashi, HIROTA Eizi

  30th Symposium on Chemical Kinetics and Dynamics, Jun. 2014, English, International conference

  Oral presentation


• High-resolution Laser spectroscopy of S1 - S0 transition of naphthalene and Cl-naphthalenes

  KASAHARA Shunji, NAKANO Takumi, YAMAMOTO Ryo

  23rd International Conference on High Resolution Molecular Spectroscopy, Jun. 2014, English, Bologna, Italy, International conference

  Poster presentation


• High-resolustion UV laser spectroscopy of vibronic bands of naphthalene S1 - S0 transition

  NAKANO Takumi, YAMAMOTO Ryo, KASAHARA Shunji

  30th Symposium on Chemical Kinetics and Dynamics, Jun. 2014, English, International conference

  Poster presentation


• 単一モード紫外レーザーによるクロロナフタレンの高分解能分光

  YAMAMOTO Ryo, KANZAWA Kenichiro, NAKANO Takumi, KASAHARA Shunji

  第14回分子分光研究会, May 2014, Japanese, Domestic conference

  Oral presentation


• ナフタレンのS1状態の高振動状態の高分解能レーザー分光

  NAKANO Takumi, YAMAMOTO Ryo, KASAHARA Shunji

  第14回分子分光研究会, May 2014, Japanese, Domestic conference

  Oral presentation


• 15NO3ラジカルのB-X遷移0-0バンドの高分解能レーザー分光

  TADA Kohei, TERAMOTO Kanon, KASAHARA Shunji, ISHIWATA Takashi, HIROTA Eizi

  第14回分子分光研究会, May 2014, Japanese, Domestic conference

  Oral presentation


• 14NO3ラジカルのB-X遷移0-0バンドの高分解能レーザー分光

  KASAHARA Shunji, TAKASHINO Tsuyoshi, TADA Kohei, ISHIWATA Takashi, HIROTA Eizi

  第14回分子分光研究会, May 2014, Japanese, Domestic conference

  Oral presentation


• ナフタレンおよびクロロナフタレンのS1←S0遷移の超高分解能レーザー分光と磁場効果

  KASAHARA Shunji, 神澤 賢一郎, 多田 康平, 吉田 和人

  第5回分子科学討論会, Sep. 2011, Japanese, 分子科学会, 札幌, Domestic conference

  Oral presentation


• Rotationally-Resolved High-Resolution Laser Spectroscopy of NO3 Radical

  K. Tada, KASAHARA Shunji, M. Baba, T. Ishiwata, E. Hirota

  Symposium on ‘A Revolution in Spectroscopy by the Optical Frequency Comb’, Sep. 2011, English, 産総研, 筑波, International conference

  Poster presentation


• Rotationally-Resolved High-Resolution Laser Spectroscopy of Naphthalene and Cl-naphthalene

  KASAHARA Shunji, K. Kanzawa, K. Tada, K. Yoshida

  Symposium on ‘A Revolution in Spectroscopy by the Optical Frequency Comb’, Sep. 2011, English, 産総研, 筑波, International conference

  Poster presentation


• NO3およびNO2の超高分解能レーザー分光と磁場効果

  多田 康平, KASAHARA Shunji, 馬場 正昭, 石渡 孝, 廣田 榮治

  第5回分子科学討論会, Sep. 2011, Japanese, 分子科学会, 札幌, Domestic conference

  Poster presentation


• Ultrahigh-Resolution Laser Spectroscopy of the S1←S0 Transition of Naphthalene and Cl-naphthalene

  KASAHARA Shunji, K. Kanzawa, K. Tada, K. Yoshida

  22nd Colloquium on High Resolution Molecular Spectroscopy, Aug. 2011, English, フランス, International conference

  Poster presentation


• Ultrahigh-Resolution Laser Spectroscopy of theNO3 B 2E' ← X 2A2' Transition

  K. Tada, KASAHARA Shunji, M. Baba, T. Ishiwata, E. Hirota

  22nd Colloquium on High Resolution Molecular Spectroscopy, Aug. 2011, English, フランス, International conference

  Poster presentation


• Rotationally-Resolved High-Resolution Laser Spectroscopy and the Zeeman Effect of the B 2E' ← X 2A2' Transition of NO3 Radical

  KASAHARA Shunji, K. Tada, M. Baba, T. Ishiwata, E. Hirota

  31th International Symposium on Free Radicals, Jul. 2011, English, オーストラリア, International conference

  Poster presentation


• ドップラーフリー高分解能分光

  KASAHARA Shunji

  強光子場科学研究懇談会, Jun. 2011, Japanese, 強光子場科学研究懇談会, 神戸, Domestic conference

  [Invited]

  Invited oral presentation


• Ultrahigh-resolution Laser Spectroscopy of the B 2E' ← X 2A2' 0-0 Band of Nitrate Radical

  多田 康平, KASAHARA Shunji, 馬場 正昭, 石渡 孝, 廣田 榮治

  第27回化学反応討論会, Jun. 2011, English, 東京工業大学, 東京, Domestic conference

  Poster presentation


• Ultrahigh-resolution Laser Spectroscopy of Naphthalene and Cl-naphthalenes

  KASAHARA Shunji, 神澤 賢一郎, 多田康平

  第27回化学反応討論会, Jun. 2011, English, 東京工業大学, 東京, Domestic conference

  Poster presentation


• 硝酸ラジカルNO3のB-X遷移0-0バンドの超高分解能レーザー分光

  多田 康平, KASAHARA Shunji, 馬場 正昭, 石渡 孝, 廣田 榮治

  第11回分子分光研究会, May 2011, Japanese, 広島市立大学, 広島, Domestic conference

  Oral presentation


• Ultrahigh-resolution spectroscopy of S1←S0 transition of naphthalene and Cl-naphthalenes

  K. Kanzawa, K. Yoshida, KASAHARA Shunji

  International Symposium for New Horizons of Cluster Chemistry, Oct. 2010, English, 神戸大学, Kobe, Japan, International conference

  Poster presentation


• Ultrahigh-Resolution Laser Spectroscopy and the Zeeman Effect of the B 2E' ← X 2A2' Transition of Nitrate Radical NO3

  K. Tada, KASAHARA Shunji, M. Baba, T. Ishiwata, E. Hirota

  International Symposium for New Horizons of Cluster Chemistry, Oct. 2010, English, 神戸大学, Kobe, Japan, International conference

  Poster presentation


• 硝酸ラジカルNO3のB-X遷移の超高分解能レーザー分光と磁場効果

  多田 康平, KASAHARA Shunji, 馬場 正昭, 石渡 孝, 廣田 榮治

  第4回分子科学討論会, Sep. 2010, Japanese, 分子科学会, 大阪, Domestic conference

  Poster presentation


• ナフタレンおよびクロロナフタレンのS1←S0遷移の超高分解能レーザー分光

  神澤 賢一郎, KASAHARA Shunji, 多田 康平, 吉田 和人

  第4回分子科学討論会, Sep. 2010, Japanese, 分子科学会, 大阪, Domestic conference

  Poster presentation


• Ultrahigh-Resolution Spectroscopy and the Zeeman effect of the B 2E' ← X 2A2' Transition of Nitrate Radical NO3

  KASAHARA Shunji, K. Tada, M. Baba, T. Ishiwata, E. Hirota

  65th Ohio State University International Syposium on Molecular Spectroscopy, Jun. 2010, English, Ohio University, Ohio, USA, International conference

  Oral presentation


• Ultrahigh-resolution laser spectroscopy of the B-X transition of NO3 radical

  K. Tada, KASAHARA Shunji, M. Baba, T. Ishiwata, E. Hirota

  第26回化学反応討論会, Jun. 2010, English, 広島大学, 広島, Domestic conference

  Poster presentation


• 硝酸ラジカルNO3のB-X遷移の超高分解能レーザー分光

  KASAHARA Shunji, 多田 康平, 馬場 正昭, 石渡 孝, 廣田 榮治

  第10回分子分光研究会, May 2010, Japanese, 東京工業大学, 東京, Domestic conference

  Oral presentation


• 硝酸ラジカルのB-X遷移の超高分解能レーザー分光

  KASAHARA Shunji, 多田 康平, 馬場 正昭, 石渡 孝, 廣田 榮治

  日本化学会第90春季年会, Mar. 2010, Japanese, 日本化学会, 大阪, Domestic conference

  Oral presentation


• チオアニソールの分子構造と低波数振動モードの帰属

  長坂茉莉子, 鈴木 正, 市村貞二郎, 馬場 正昭, KASAHARA Shunji, 川内進

  第3回分子科学討論会, Sep. 2009, Japanese, 分子科学会, 名古屋, Domestic conference

  Oral presentation


• NO3ラジカルのB-X遷移の超高分解能レーザー分光

  KASAHARA Shunji, 多田 康平, 馬場 正昭, 石渡 孝, 廣田 榮治

  第3回分子科学討論会, Sep. 2009, Japanese, 分子科学会, 名古屋, Domestic conference

  Oral presentation


• 1-,および2-クロロナフタレン分子の超高分解能レーザー分光

  神澤 賢一郎, KASAHARA Shunji, 馬場 正昭

  第3回分子科学討論会, Sep. 2009, Japanese, 分子科学会, 名古屋, Domestic conference

  Oral presentation


• Ultrahigh-Resolution Laser Spectroscopy of the B 2E' ← X 2A2' Transition of NO3 Radical

  KASAHARA Shunji, K. Tada, M. Baba, T. Ishiwata, E. Hirota

  30th International Symposium on Free Radicals, Jul. 2009, English, Savonlynna, Finland, International conference

  Poster presentation


• Ultrahigh-Resolution Spectroscopy of the B 2E' ← X 2A2' Transition of NO3 Radical

  KASAHARA Shunji, K. Kanzawa, K. Yoshida, Y. Semba, M. Baba, T. Ishiwata, E. Hirota

  64th Ohio State University International Syposium on Molecular Spectroscopy, Jun. 2009, English, Ohio University, Ohio, USA, International conference

  Oral presentation


• Ultrahigh-resolution spectroscopy of chloro- naphthalene

  神澤 賢一郎, KASAHARA Shunji, 馬場 正昭

  第25回化学反応討論会, Jun. 2009, English, 大宮, Domestic conference

  Poster presentation


• Ultrahigh-resolution laser spectroscopy of naphthalene S1←S0 transition

  KASAHARA Shunji, 吉田 和人, 仙波 洋介, 山中 孝弥, 馬場 正昭

  第25回化学反応討論会, Jun. 2009, English, 大宮, Domestic conference

  Poster presentation


• チオアニソール分子の超高分解能レーザー分光

  長坂茉莉子, 鈴木 正, 市村貞二郎, 馬場 正昭, KASAHARA Shunji, 川内進

  第9回分子分光研究会, May 2009, Japanese, 富山大学, 富山, Domestic conference

  Oral presentation


• クロロナフタレンS1←S0遷移の超高分解能レーザー分光

  神澤 賢一郎, KASAHARA Shunji, 馬場 正昭

  第9回分子分光研究会, May 2009, Japanese, 富山大学, 富山, Domestic conference

  Oral presentation


• ベンゼンのS1←S0遷移のドップラーフリー二光子吸収分光

  仙波 洋介, KASAHARA Shunji, 馬場 正昭

  第2回分子科学討論会, Sep. 2008, Japanese, 分子科学会, 福岡, Domestic conference

  Oral presentation


• ナフタレン分子の超高分解能レーザー分光

  吉田 和人, KASAHARA Shunji, 馬場 正昭

  第2回分子科学討論会, Sep. 2008, Japanese, 分子科学会, 福岡, Domestic conference

  Oral presentation


• ジベンゾフラン分子の超高分解能レーザー分光

  KASAHARA Shunji, 山脇 三知, 馬場 正昭

  第2回分子科学討論会, Sep. 2008, Japanese, 分子科学会, 福岡, Domestic conference

  Poster presentation


• クロロナフタレン分子の超高分解能レーザー分光

  神澤 賢一郎, 芦澤 則孝, KASAHARA Shunji, 馬場 正昭

  第2回分子科学討論会, Sep. 2008, Japanese, 分子科学会, 福岡, Domestic conference

  Poster presentation


• アントラセン分子の超高分解能レーザー分光

  馬場 正昭, 仙波 洋介, 吉田 和人, KASAHARA Shunji

  第2回分子科学討論会, Sep. 2008, Japanese, 分子科学会, 福岡, Domestic conference

  Oral presentation


• 励起分子の超高分解能レーザー分光

  KASAHARA Shunji

  九重分光学関連夏季セミナー2008, Jul. 2008, Japanese, 九重, Domestic conference

  [Invited]

  Invited oral presentation


• 分子線を用いたベンゼンのS1←S0遷移におけるドップラーフリー二光子吸収分光法

  仙波 洋介, KASAHARA Shunji, 馬場 正昭

  第24回化学反応討論会, Jun. 2008, Japanese, 北海道大学, 札幌, Domestic conference

  Poster presentation


• ナフタレン分子の超高分解能レーザー分光と励起状態ダイナミクス

  吉田 和人, KASAHARA Shunji, 馬場 正昭

  第24回化学反応討論会, Jun. 2008, Japanese, 北海道大学, 札幌, Domestic conference

  Poster presentation


• Ultrahigh-resolution spectroscopy of anthracene

  M. Baba, K. Yoshida, Y. Semba, KASAHARA Shunji

  63rd Ohio State University International Symposium on Molecular Spectroscopy, Jun. 2008, English, Ohio University, Ohio, USA, International conference

  Oral presentation


• Ultrahigh-resolution spectroscopy and the Zeeman effect of naphthalene S1←S0 transition

  K. Yoshida, KASAHARA Shunji, M. Baba

  63rd Ohio State University International Symposium on Molecular Spectroscopy, Jun. 2008, English, Ohio University, Ohio, USA, International conference

  Oral presentation


• Doppler-free two-photon excitation spectroscopy of benzene in a molecular beam

  Y. Semba, KASAHARA Shunji, M. Baba

  63rd Ohio State University International Symposium on Molecular Spectroscopy, Jun. 2008, English, Ohio University, Ohio, USA, International conference

  Oral presentation


• 分子線を用いたベンゼンのドップラーフリー二光子吸収分光

  仙波 洋介, KASAHARA Shunji, 馬場 正昭

  第8回分子分光研究会, May 2008, Japanese, 神戸大学, 神戸, Domestic conference

  Oral presentation


• ナフタレン分子のS1←S0遷移の超高分解能レーザー分光と磁場効果

  吉田 和人, KASAHARA Shunji, 馬場 正昭

  第8回分子分光研究会, May 2008, Japanese, 神戸大学, 神戸, Domestic conference

  Oral presentation


• 分子線を用いたドップラーフリー二光子吸収によるベンゼンの超高分解能分光

  仙波 洋介, KASAHARA Shunji, 馬場 正昭

  第1回分子科学討論会, Sep. 2007, Japanese, 分子科学会, 仙台, Domestic conference

  Poster presentation


• ナフタレン分子のS1状態における状態間相互作用の解明

  吉田 和人, 神澤 賢一郎, KASAHARA Shunji, 馬場 正昭

  第1回分子科学討論会, Sep. 2007, Japanese, 分子科学会, 仙台, Domestic conference

  Poster presentation


• ジベンゾフラン分子のS1←S0遷移の超高分解能レーザー分光

  KASAHARA Shunji, 山脇 三知, 馬場 正昭, 山中 孝弥

  第1回分子科学討論会, Sep. 2007, Japanese, 分子科学会, 仙台, Domestic conference

  Oral presentation


• アントラセン分子のS1←S0遷移の超高分解能レーザー分光

  馬場 正昭, 斉藤 智久, 篠原 圭介, 仙波 洋介, 吉田 和人, KASAHARA Shunji

  第1回分子科学討論会, Sep. 2007, Japanese, 分子科学会, 仙台, Domestic conference

  Oral presentation


• Vibrational and rotational structure of pyrene in the S0 and S1 state

  M. Saito, M. Baba, T. Yamanaka, KASAHARA Shunji

  Symposium on Advanced Laser Spectroscopy, Sep. 2007, English, Kobe, Japan, International conference

  Poster presentation


• Ultrahigh-resolution spectroscopy and Zeeman effect of dibenzofuran S1←S0 transition

  KASAHARA Shunji, M. Yamawaki, M. Baba

  20th Colloquium on High Resolution Molecular Spectroscopy, Sep. 2007, English, Dijon, France, International conference

  Poster presentation


• High-resolution laser spectroscopy of dibenzofuran molecule

  KASAHARA Shunji, M. Yamawaki, M. Baba

  Symposium on Advanced Laser Spectroscopy, Sep. 2007, English, Kobe, Japan, International conference

  Oral presentation


• High-resolution laser spectroscopy and the Zeeman effect of naphthalene S1←S0 transition

  K. Yoshida, KASAHARA Shunji, M. Baba

  Symposium on Advanced Laser Spectroscopy, Sep. 2007, English, Kobe, Japan, International conference

  Poster presentation


• Doppler-free two-photon excitation spectroscopy of benzene S1←S1 transition with a molecular beam

  M. Baba, M. Saito, Y. Noma, K. Shinohara, KASAHARA Shunji

  Symposium on Advanced Laser Spectroscopy, Sep. 2007, English, Kobe, Japan, International conference

  Oral presentation


• Doppler-free two-photon excitation spectroscopy of benzene S1←S0 transition with a molecular beam

  Y. Semba, KASAHARA Shunji, M. Baba

  Symposium on Advanced Laser Spectroscopy, Sep. 2007, English, Kobe, Japan, International conference

  Poster presentation


• Ultrahigh-resolution spectroscopy of dibenzofuran S1←S0 transition, 62nd Ohio State University International Symposium on Molecular Spectroscopy

  KASAHARA Shunji, M. Yamawaki, M. Baba

  62th Ohio State University International Syposium on Molecular Spectroscopy, Jun. 2007, English, Ohio University, Ohio, USA, International conference

  Oral presentation


• Methyl torsional levels in 9-methylanthracene, 62nd Ohio State University International Symposium on Molecular Spectroscopy

  M. Baba, Y. Noma, KASAHARA Shunji, T. Yamanaka

  63th Ohio State University International Syposium on Molecular Spectroscopy, Jun. 2007, English, Ohio University, Ohio, USA, International conference

  Oral presentation


• メチルアントラセンの構造と励起分子ダイナミクス

  馬場 正昭, 野間 勇希, 斉藤 智久, KASAHARA Shunji, 山中 孝弥

  第24回化学反応討論会, May 2007, Japanese, 神戸大学, 神戸, Domestic conference

  Oral presentation


• ベンゼンの超高分解能レーザー分光と励起状態ダイナミクス

  馬場 正昭, 仙波 洋介, 吉田 和人, KASAHARA Shunji

  第8回分子分光研究会, May 2007, Japanese, 東京理科大学, 東京, Domestic conference

  Oral presentation


• ピレン分子のS0 およびS1状態における振動回転準位

  斉藤 智久, 馬場 正昭, KASAHARA Shunji, 山中 孝弥

  第9回分子分光研究会, May 2007, Japanese, 東京理科大学, 東京, Domestic conference

  Oral presentation


• ナフタレン分子のS1←S0遷移の超高分解能レーザー分光

  吉田 和人, 馬場 正昭, KASAHARA Shunji

  第7回分子分光研究会, May 2007, Japanese, 東京理科大学, 東京, Domestic conference

  Oral presentation


• ジベンゾフラン分子のS1←S0遷移の超高分解能分光と磁場効果

  KASAHARA Shunji, 山脇 三知, 仙波 洋介, 吉田 和人, 馬場 正昭

  第23回化学反応討論会, May 2007, Japanese, 神戸大学, 神戸, Domestic conference

  Poster presentation


• 多原子分子の励起状態の超高分解能レーザー分光

  S Kasahara

  第114回理化学セミナー, 2006, Japanese, 入力してください, 京都, Domestic conference

  Invited oral presentation


• High resolution fluorescence excitation spectra and the Zeeman effects of benzene S1-S0 ransition: Coupling to triplet states is not observed

  H. Kato, S. Kasahara, M. Baba, Y. Tatamitani, M. Yamayaki

  The 19th Colloquium on High Resolution Molecular Spectroscopy, Sep. 2005, English, Salamanca (Spain), International conference

  Oral presentation


• Doppler-free polarization spectroscopy of Naphthalene Molecule

  S Kasahara

  19th Colloquium on High Resolution Molecular Spectroscopy, Sep. 2005, English, Salamanca, Spain, International conference

  Oral presentation


• Sub-Doppler high resolution excitation spectroscopy of dibenzofuran

  S Kasahara, M. Baba, A. Doi, Y. Tatamitani, M. Yamayaki, H. Kato

  60th Ohio State University International Symposium on Molecular Spectroscopy, Jun. 2005, English, Ohio (USA), International conference

  Oral presentation


• ベンゼン分子のS1 1B2u(v1=2,v6=1)振電準位の状態間摂動

  土肥 敦之, S Kasahara, 馬場 正昭

  分子構造総合討論会, 2005, Japanese, 東京, Domestic conference

  Oral presentation


• ナフタレン分子の紫外領域における高分解能レーザー分光とZeeman 効果

  S Kasahara, 山脇 三知, 秋田 公美, 馬場 正昭

  分子構造総合討論会, 2005, Japanese, 東京, Domestic conference

  Oral presentation


• ナフタレン分子の紫外領域における高分解能レーザー分光

  S Kasahara, 山脇 三知, 秋田 公美, 馬場 正昭

  化学反応討論会, 2005, Japanese, 大阪, Domestic conference

  Oral presentation


• ダイオキシン類基本分子の超高分解能レーザー分光

  馬場 正昭, 山脇 三知, 畳谷 仁男, 土肥 敦之, S Kasahara, 加藤 肇

  分子構造総合討論会, 2005, Japanese, 東京, Domestic conference

  Oral presentation


• ジベンゾフラン高分解能レーザー分光

  山脇 三知, 伊藤 正秀, S Kasahara, 馬場 正昭

  分子構造総合討論会, 2005, Japanese, 東京, Domestic conference

  Oral presentation


• ジベンゾフランのS1←S0 遷移の高分解能レーザー分光

  山脇 三知, S. Kasahara, 馬場 正昭

  分子分光研究会, 2005, Japanese, 東京, Domestic conference

  Oral presentation


• Doppler-free two-photon excitation spectroscopy and Zeeman effect in the 1401 and 10 1140 1 bands of C6D6

  D. Y. Baek, M. Okubo, A. Doi, S Kasahara, H. Kato, M. Baba

  化学反応討論会, 2005, English, 大阪, Domestic conference

  Oral presentation


• Orientation observed by Zeeman spectra of dissociated atoms and the interference in photo-excitation

  KIMURA, Y, KASAHARA Shunji, KATO Hajime, BABA, M

  InternationalSymposium on Stereodynamics of Chemical Reactions 2004, Dec. 2004, English, 未記入, Osaka, Japan, Domestic conference

  Oral presentation


• ベンゼンと重水素化ベンゼン分子のS11B2u(v6=1)_S01A1g(v=0)遷移のドップラーフリー高分解能分光

  土肥 敦之, 馬場 正昭, 笠原 俊二, 加藤 肇

  分子分光研究会, 2004, Japanese, 未記入, 岡山, Domestic conference

  Oral presentation


• ドップラーフリー偏光分光法によるphenol 分子の高分解能レーザー分光

  畳谷 仁男, 笠原 俊二, 馬場 正昭, 加藤 肇

  化学反応討論会, 2004, Japanese, 未記入, 東京, Domestic conference

  Oral presentation


• ドップラーフリー偏光ラベル分光法によるナフタレン分子の超高分解能レーザー分光

  笠原 俊二, 畳谷 仁男, 山脇 三知, 馬場 正昭, 加藤 肇

  分子構造統合討論会, 2004, Japanese, 未記入, 広島, Domestic conference

  Oral presentation


• ドップラーフリー光・光二重共鳴偏光分光法によるナフタレン分子の超高分解能分光

  笠原 俊二, 畳谷 仁男, 馬場 正昭, 加藤 肇

  化学反応討論会, 2004, Japanese, 未記入, 東京, Domestic conference

  Oral presentation


• 分子の視点から見た化学反応

  笠原 俊二

  神戸大学理学部出前講義, Oct. 2003, Japanese, 神戸大学, 兵庫県立柏原高校, Domestic conference

  Oral presentation

• 日本分光学会


• 日本化学会

• 光・光二重共鳴法を利用した高選択的高分解能レーザー分光計測システムの開発と展開

  笠原 俊二

  科学研究費補助金／基盤研究(C), 2007, Principal investigator

  Competitive research funding


• Studies on Molecular Structure and Dynamics by Doppler-free High-resolution Laser Spectroscopy

  KATO Hajime, KASAHARA Shunji

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Kobe University, 2003 - 2004

  1.Doppler-free two-photon fluorescence excitation spectra of the A^1A_u(v_7=1)←X^1A_g transition of trans-glyoxal were measured under the magnetic field up to 6T. By analyzing the results, it is concluded that the Zeeman splitting of the A^1^A_u state is originating from the mixing of the 1^3Bu state by spin-orbit interaction and the magnetic moment is along the top axis. 2.High resolution excitation spectra and the Zeeman effects for the low-lying vibrational band of the S_1^1B_<2u>←S_0^1A_<1g> transition in gaseous benzene-d_6 were measured. No perturbation originating from an interaction with a triplet state was observed in both bands. It became clear from the Zeeman spectra that rotationally resolved levels are not mixed with a triplet state. Accordingly, it was concluded that the intersystem mixing is not likely to occur at levels of low excess energy in the S_1 state of an isolated benzene. 3.Doppler-free two-photon excitation spectrum and the Zeeman effect of the S_1^1B_<1u>(v_<21>=1)←S_0^1A_g(v=0) transition of naphthalene have been measured. Rotationally resolved levels were found not to be mixed with a triplet state from the Zeeman spectra. It is demonstrated that nonradiative decay of an isolated naphthalene excited to low rovibronic levels in the S_1 state does not occur through the intersystem mixing. 188 4.Sub-Doppler high-resolution excitation spectra of dibenzo-p-dioxin (DD) have been observed for the 0_0^0 and 0_0^0+22 cm^<-1> bands of the S_1←S_0 transition by crossing a tunable laser beam perpendicular to a collimated molecular beam. The observed spectra were reproduced well by simulating the spectra as the a-type transition, and the S_1 state is identified to be a ^1B_<1u> state. The DD molecule has been shown t 0_0^+22 cm^<-1> band is assigned as a transition to the a_g component of butterfly mode.


• イオン検出を用いた高分解能レーザー分光システムの開発と展開

  笠原 俊二

  日本学術振興会, 科学研究費助成事業, 奨励研究(A), 神戸大学, 1998 - 1999

  1.これまでに確立した光検出によるドップラーフリー光・光二重共鳴偏光分光法を用いて、アルカリ金属二原子分子であるKRb分子の励起状態の観測を行うとともに、上記分光法を紫外光領域に拡張してLi_2、NaLi、Na_2分子の高分解能分光をも行った結果、以下のことが明らかとなった。 (1)KRb分子において観測された2つの^1II状態間における状態間相互作用の存在を見出すとともに、その相互作用における両状態の波動関数の符号によってスペクトル線の強度異常が生じる(干渉効果)ことを発見した。また、KRb分子の(1)^1II状態の高振動準位においてスペクトル線幅の広がりを見出し、線幅の広がりが前期解離によるものと帰属した。さらに、前期解離の生じている領域において2つの^1II状態間における状態間相互作用が生じる場合に、前期解離の大きさにも干渉効果が生じていることを見出した。 (2)Li_2、NaLi、Na_2分子の紫外領域の高分解能分光を行い、励起状態の構造を決定するとともに、スペクトル線のシフトや線幅の変化から状態間相互作用や前期解離を見出し、その機構を明らかにした。特に、Li_2分子に関しては、2極小ポテンシャルを持つ励起状態における相互作用について詳細な知見を得ることができた。 2.前年度に作成したイオン検出を目的としたステンレス製ヒートパイブセルを改良し、アルカリ金属二原子分子のスペクトルを光検出による測定を試みた。信号を得ることができるようになったが、前期解離などの現象を観測するにはさらなる信号ノイズ比の向上が必要である。


• Development of Cavity-Dumped Ti : sapphire Femtosecond Laser and its Amplifier

  TOMINAGA Keisuke, KASAHARA Shunji, NIIKURA Shinji, SARUKURA Nobuhiko

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Kobe University, 1998 - 1999

  We have developed an intra-cavity dumped femtosecond Ti : sapphire laser system and its multi-pass amplifier to obtain a moderately high energy short pulse, enough to perform third order optical nonlinear experiment in liquid solutions. Currently, commercially available femtosecond Ti : sapphire laser systems are either (1)Ti : sapphire oscillator (general price = 18,000,000 yen), which yields a pulse with an energy of 4 nJ/pulse, or (2)Ti : sapphire oscillator and its amplifier (general price = 50,000,000 yen), which yields a pulse with an energy of 1 mJ/pulse. In order to perform experiment with a short pulse in chemical systems such as transient absorption or photon echo, we need a pulse with an energy around mJ/pulse to sub mJ/pulse. Therefore, a new short pulse laser system is desirable to get s moderately high energy pulse. In this research project we here calculated stability of oscillation for the cavity-dumped Ti : sapphire laser by the ABCD matrix formalism. We have investigated both the five-mirror configuration and six-mirror configuration theoretically and experimentally. The cavity dumper laser produces a pulse width of 13 fs and energy of 67 nJ/pulse at 4 MHz. Currently, a multi-pass (six-pass) amplifier with a Ti : sapphire crystal is being designed and constructed to get a higher energy pulse. The purpose of this amplifier is to get a pulse with an energy more than sub microJ/pulse at 20 kHz. We are also writing a manual to construct this laser system and are planning to distribute it to public.


• High-resolution Spectroscopy Combined with Laser, Molecular Beam and Magnetic or Electric Field, and Dynamics of Excited Molecules

  KATO Hajime, BABA Masaaki, KASAHARA Shuji

  Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Grant-in-Aid for Specially Promoted Research, Kobe University, 1992 - 1996

  We have constructed a single mode auto-scan laser system which works in UV-Visible-NearIR region. An actively stabilized etalon is used to measure the absolute wavenumber of laser line, and the accuracy better than 0.0001cm^<-1> is obtained. The jitters of frequency of the scanning laser is reduced by locking the laser cavity to a stabilized external cavity, and the line width is reduced to 0.00002cm^<-1>. We developed new experimental methods by combining the laser, a molecular beam, and the external magnetic or electric field. 1. We have studied the structure and the dynamics of excited molecules by using techniques of ultra-high resolution spectroscopy. We found a new interference effect in predissociation which is a quantum effect in photodissociation. It shows the importance of phases of wave functions whose levels concerns a chemical reaction. 2. We extended the high-resolution spectroscopy for polyatomic molecules, such as CS_2, glyoxal, and pyrazine. We measured a Doppler-free two-photon absorption apectrum of glyoxal. The spectrum is completely assigned and the molecular constants are determined. With accuracy better than 100 times than previous studies, we could study small perturbations and the effect of magnetic field even at 5 gauss. These studies opened a new field of spectroscopy which uses the intensity and energy shift. 3. Cs_2 molecules were excited to the single level D^1SIGMA^+_ (v=46, J=54), which predissociated to Cs (6s^2S_<1/2>) + Cs(6p^2P_<3/2>) atoms. The m_j-resolved excitation spectra of the Cs(8s^2S_<1/2, m'j>, *6p^2P_<2/3, mj>) transition in a magnetic field. This is the first report concerning the m_j-resolved Doppler line shape. 4. Many levels are excited simultaneously in a ultra-first spectroscopy, but we can get lifetime or predissociation rate of a single level in a high-resolution spectroscopy. We measured the rotationally resolved line shapes of predissociating levels, and the predissociation was studied by using supplementaly the results of time-resolved spectroscopy and high-resolution spectroscopy.


• ドプラーフリー高分解能レーザー分光による前期解離過程に関する研究

  笠原 俊二

  日本学術振興会, 科学研究費助成事業, 奨励研究(A), 神戸大学, 1994 - 1994

  単色性のよいレーザー2台およびチタンサファイヤレーザーを用いたドプラーフリー光・光二重共鳴偏光分光法により、アルカリ金属二原子分子のレーザー高分解能分光を行った結果、次のような知見を得ることができた。 1.NaK分子の高励起状態について、二段階励起による二重共鳴スペクトルを観測した結果、33016〜33674cm^<-1>領域について多くの高励起一重項状態を観測・同定することができた。また、観測されたいくつかの回転線においてエネルギーシフトおよび強度異常が生じていることが判明し、これらの異常は近傍に存在する電子励起状態との状態間摂動に起因しており、強度異常は摂動による遷移モーメントの打ち消し合い(干渉効果)によることを明らかにすることができた。 2.NaK分子のB^1II状態の解離限界近傍を観測した結果、観測された回転線にエネルギーシフトおよび線幅の広がりが生じている事が判明した。この広がりは近傍に存在するc^3Σ状態の解離連続帯を経てK(4p^2_<1/2>)原子を生じる前期解離に起因する事を明らかにすると共に、エネルギーシフトから、さらにb^3II状態とも強く相互作用している事が明らかとなった。 3.Cs_2分子のC^1IIu状態のv´=20までの振動回転準位を観測・同定する事ができた。v´>12の振動回転準位に大きなエネルギーシフトが見られるとともに、摂動の相手状態の振動回転準をも観測する事ができた。また、v´>14において線幅の広がりが観測され、この領域において近傍に存在するc^3Σu状態により前期解離している事が明らかとなった。