Organization
Scheduled update Professor
Position
Professor
External link
TANG Jian
Degree
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Doctor (Science) ( The Graduate University for Advanced Studies )
Research Interests
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molecular spectroscopy
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laser spectroscopy
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high resolution spectrum in gas phase
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不安定分子
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transient molecules
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分子分光学
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レーザー分光
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気相高分解能分光
Research Areas
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Nanotechnology/Materials / Fundamental physical chemistry / Molecular Spectroscopy
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Natural Science / Biophysics, chemical physics and soft matter physics / Molecular Spectroscopy
Education
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The Graduate University for Advanced Studies 数物科学研究科 構造分子科学専攻
1993.4 - 1996.3
Country： Japan
Research History
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Okayama University グローバル人材育成院（兼：大学院自然科学研究科） Professor
2017
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Okayama University 大学院自然科学研究科（理学部化学科） Associate Professor
2004.5 - 2016
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ウォータールー大学 客員研究員
2004.1 - 2004.4
Country：Canada
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カナダ国立研究機構（NRC） NSERC研究員
2001.1 - 2003.12
Country：Canada
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The University of Tokyo Graduate School of Arts and Sciences
1999.1 - 2000.12
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シカゴ大学 博士研究員
1996.6 - 1998.12
Country：United States
Professional Memberships
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Japan Society for Molecular Science
2007.9
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The Spectroscopical Society of Japan
2004.6
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The Chemical Society of Japan
2004.5
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American Physical Society
2004
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American Chemical Society
2004
Committee Memberships
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日本分光学会中国四国支部 幹事・代議員
2015.10
Committee type：Academic society
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分子分光研究会 運営委員会
2015.3
Committee type：Academic society
Papers
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Laboratory and astronomical discovery of the cyanovinyl radical H2CCCN Reviewed
C. Cabezas, J. Tang, M. Agúndez, K. Seiki, Y. Sumiyoshi, Y. Ohshima, B. Tercero, N. Marcelino, R. Fuentetaja, P. de Vicente, Y. Endo, J. Cernicharo
Astronomy & Astrophysics 676 L5 - L5 2023.7
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Infrared laser spectroscopy of the nu(3)-nu(4) difference band and detection of the nu(3) band of NO3 Reviewed
Kentarou Kawaguchi, Jian Tang, Naota Akikusa
CHEMICAL PHYSICS LETTERS 765 138315 2021.2
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Observation and analysis of optical free induction decay in the CH3F ν4 band Reviewed
Yusuke Okabayashi, Yuki Miyamoto, Jian Tang, Kentarou Kawaguchi
Chemical Physics Letters 692 106 - 110 2018.1
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Infrared spectroscopy of 2v(4) and v(3)+2v(4) bands of the NO3 radical Reviewed
Kentarou Kawaguchi, Tatsuo Narahara, Ryuji Fujimori, Jian Tang, Takashi Ishiwata
JOURNAL OF MOLECULAR SPECTROSCOPY 334 10 - 21 2017.4
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Study of infrared emission spectroscopy for the B-1 Delta(g)-A(1)Pi(u) and B '(1)Sigma(+)(g)-A(1)Pi(u) systems of C-2 Reviewed International coauthorship International journal
Wang Chen, Kentarou Kawaguchi, Peter F. Bernath, Jian Tang
JOURNAL OF CHEMICAL PHYSICS 144 ( 6 ) 064301 2016.2
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Simultaneous analysis of the Ballik-Ramsay and Phillips systems of C2 and observation of forbidden transitions between singlet and triplet states Reviewed International coauthorship
Wang Chen, Kentarou Kawaguchi, Peter F. Bernath, Jian Tang
The Journal of Chemical Physics 142 ( 6 ) 064317 - 064317 2015.2
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Bridging the gap between small clusters and nanodroplets: Spectroscopic study and computer simulation of carbon dioxide solvated with helium atoms
Tang, J., McKellar, A. R. W., Mezzacapo, F., Moroni, S.
Physical Review Letters 92 ( 14 ) 2004
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Quantum solvation of carbonyl sulfide with helium atoms
J Tang, YJ Xu, ARW McKellar, W Jager
SCIENCE 297 ( 5589 ) 2030 - 2033 2002.9
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Laboratory observation of para-H2C4N
Tang, J., Sumiyoshi, Y., Endo, Y.
Astrophysical Journal 552 ( 1 ) 2001
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CH5+: The infrared spectrum observed
White, E. T., Tang, J., Oka, T.
Science 284 ( 5411 ) 1999
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Fine and hyperfine coupling constants of the cis-β-cyanovinyl radical, HCCHCN Reviewed
Masakazu Nakajima, Yi-Ting Liu, Ching Hua Chang, Kenji Seiki, Yoshihiro Sumiyoshi, Yasuhiro Ohshima, Jian Tang, Yasuki Endo
Physical Chemistry Chemical Physics 24 ( 19 ) 11585 - 11591 2022.4
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Infrared spectroscopy of difference and combination bands of the NO3 radical and anharmonicity analysis Reviewed
Kentarou Kawaguchi, Ryuji Fujimori, Jian Tang, Takashi Ishiwata
Journal of Molecular Spectroscopy 385 111594 - 111594 2022.3
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Erratum “Infrared spectroscopy of 2ν4 and ν3 + 2ν4 band of the NO3 radical” [J. Mol. Spectrosc. 334 (2017) 10–21]
Kentarou Kawaguchi, Tatsuo Narahara, Ryuji Fujimori, Jian Tang, Takashi Ishiwata
Journal of Molecular Spectroscopy 346 44 - 45 2018.4
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Infrared spectroscopy of the NO3 radical from 2000 to 3000 cm(-1) Reviewed
Kentarou Kawaguchi, Ryuji Fujimori, Jian Tang, Takashi Ishiwata
JOURNAL OF MOLECULAR SPECTROSCOPY 344 6 - 16 2018.2
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K. Kawaguchi, S. Muller, J. H. Black, T. Amano, F. Matsushima, R. Fujimori, Y. Okabayahsi, H. Nagahiro, Y. Miyamoto, J. Tang
The Astrophysical Journal 822 ( 2 ) 115 - 123 2016.5
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Erratum: Study of infrared emission spectroscopy for the B 1Δg- A 1Πu and B ′1Σg+- A 1Πu systems of C2 (Journal of Chemical Physics (2016) 144 (064301))
Wang Chen, Kentarou Kawaguchi, Peter F. Bernath, Jian Tang
Journal of Chemical Physics 144 ( 9 ) 2016.3
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Study of infrared emission spectroscopy for the B-1 Delta(g)-A(1)Pi(u) and B '(1)Sigma(+)(g)-A(1)Pi(u) systems of C-2 (vol 144, 064301, 2016) Reviewed
Wang Chen, Kentarou Kawaguchi, Peter F. Bernath, Jian Tang
JOURNAL OF CHEMICAL PHYSICS 144 ( 9 ) 099901 2016.3
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On the vibrational assignment in the ground electronic state of NO3 Reviewed
Kentarou Kawaguchi, Ryuji Fujimori, Jian Tang, Takashi Ishiwata
JOURNAL OF MOLECULAR SPECTROSCOPY 314 73 - 78 2015.8
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Pressure broadening of transitions in the CH3F v(4) band using Stark modulated Lamb dips Reviewed
Yusuke Okabayashi, Yuki Miyamoto, Jian Tang, Kentarou Kawaguchi
CHEMICAL PHYSICS LETTERS 619 144 - 147 2015.1
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FTIR Spectroscopy of NO3: Perturbation Analysis of the v(3)+v(4) State Reviewed
Kentarou Kawaguchi, Ryuji Fujimori, Jian Tang, Takashi Ishiwata
JOURNAL OF PHYSICAL CHEMISTRY A 117 ( 50 ) 13732 - 13742 2013.12
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Coherence decay measurement of v=2 vibrons in solid parahydrogen Reviewed
Susumu Kuma, Yuki Miyamoto, Kyo Nakajima, Atsushi Fukumi, Kentarou Kawaguchi, Itsuo Nakano, Noboru Sasao, Minoru Tanaka, Jian Tang, Takashi Taniguchi, Satoshi Uetake, Tomonari Wakabayashi, Akihiro Yoshimi, Motohiko Yoshimura
JOURNAL OF CHEMICAL PHYSICS 138 ( 2 ) 024507 2013.1
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Fourier transform infrared spectroscopy of the nu(2) and nu(4) bands of NO3 Reviewed
Fujimori, R., Shimizu, N., Tang, J., Ishiwata, T., Kawaguchi, K.
Journal of Molecular Spectroscopy 283 2013
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Observation of new near infrared emission band systems of small bismuth clusters in solid neon matrix Reviewed
Wakabayashi, Tomonari, Tomioka, Makiko, Wada, Yoriko, Miyamoto, Yuki, Tang, Jian, Kawaguchi, Kentarou, Kuma, Susumu, Sasao, Noboru, Nanjo, Hajime, Uetake, Satoshi, Yoshimura, Motohiko, Nakano, Itsuo
European Physical Journal D 67 ( 2 ) 2013
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Diffusion of hydrogen fluoride in solid parahydrogen Reviewed
Ooe, Hiroki, Miyamoto, Yuki, Kuma, Susumu, Kawaguchi, Kentarou, Nakajima, Kyo, Nakano, Itsuo, Sasao, Noboru, Tang, Jian, Taniguchi, Takashi, Yoshimura, Motohiko
Journal of Chemical Physics 138 ( 21 ) 2013
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Spectroscopy of HF and HF-Containing Clusters in Solid Parahydrogen Reviewed
Yuki Miyamoto, Hiroki Ooe, Susumu Kuma, Kentarou Kawaguchi, Kyo Nakajima, Itsuo Nakano, Noboru Sasao, Jian Tang, Takashi Taniguchi, Motohiko Yoshimura
JOURNAL OF PHYSICAL CHEMISTRY A 115 ( 50 ) 14254 - 14261 2011.12
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Fourier transform infrared spectroscopy of the v(3) hot band of NO3 Reviewed
K. Kawaguchi, N. Shimizu, R. Fujimori, J. Tang, T. Ishiwata, I. Tanaka
JOURNAL OF MOLECULAR SPECTROSCOPY 268 ( 1-2 ) 85 - 92 2011.7
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Theoretical and experimental study of infrared spectra of He-2-CO2 Reviewed
Jian Tang, A. R. W. McKellar, Xiao-Gang Wang, Tucker Carrington
CANADIAN JOURNAL OF PHYSICS 87 ( 5 ) 417 - 423 2009.5
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Infrared spectra of seeded hydrogen clusters: (para-H2)N-N2O and (ortho-H2)N-N2O, N = 2-13. Reviewed International journal
Jian Tang, A R W McKellar
The Journal of chemical physics 123 ( 11 ) 114314 - 114314 2005.9
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Theoretical and experimental studies of the infrared rovibrational spectrum of He2-N2O. International journal
Xiao-Gang Wang, Tucker Carrington Jr, Jian Tang, A R W McKellar
The Journal of chemical physics 123 ( 3 ) 34301 - 34301 2005.7
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Tunable diode laser spectrometer for pulsed supersonic jets: application to weakly-bound complexes and clusters. International journal
Matthew D Brookes, Changhong Xia, Jian Tang, James A Anstey, Bryan G Fulsom, Ke-Xian Au Yong, Jenna M King, A R W McKellar
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy 60 ( 14 ) 3235 - 42 2004.12
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High resolution infrared spectra of a carbon dioxide molecule solvated with helium atoms. International journal
Jian Tang, A R W McKellar
The Journal of chemical physics 121 ( 1 ) 181 - 90 2004.7
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High resolution infrared spectra of a carbon dioxide molecule solvated with helium atoms
Tang, J., McKellar, A. R. W.
Journal of Chemical Physics 121 ( 1 ) 2004
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Infrared spectra of seeded hydrogen clusters: (paraH(2))(N)-OCS, (orthoH(2))(N)-OCS, and (HD)(N)-OCS, N=2-7
Tang, J., McKellar, A. R. W.
Journal of Chemical Physics 121 ( 7 ) 2004
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The millimeter wave spectrum of the (CO)-C-13-O-16 dimer
Surin, L. A., Fourzikov, D. N., Dumesh, B. S., Winnewisser, G., Tang, J., McKellar, A. R. W.
Journal of Molecular Spectroscopy 223 ( 2 ) 2004
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Spectroscopic studies of quantum solvation in 4HeN-N2O clusters. International journal
Yunjie Xu, Wolfgang Jäger, Jian Tang, A R W McKellar
Physical review letters 91 ( 16 ) 163401 - 163401 2003.10
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High-resolution infrared spectra of carbonyl sulfide solvated with helium atoms
Tang, J., McKellar, A. R. W.
Journal of Chemical Physics 119 ( 11 ) 2003
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Cluster dynamics in the range N=2-20: High resolution infrared spectra of He-N-CO
Tang, J., McKellar, A. R. W.
Journal of Chemical Physics 119 ( 2 ) 2003
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Infrared spectra of N2O-He-4, N2O-He-3, and OCS-He-3 complexes
J Tang, ARW McKellar
JOURNAL OF CHEMICAL PHYSICS 117 ( 6 ) 2586 - 2591 2002.8
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Millimeter-wave spectra of the CO dimer: Three new states and further evidence of distinct isomers
J Tang, ARW McKellar, LA Surin, DN Fourzikov, BS Dumesh, G Winnewisser
JOURNAL OF MOLECULAR SPECTROSCOPY 214 ( 1 ) 87 - 93 2002.7
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Infrared spectra of OCS-hydrogen complexes
Tang, J., McKellar, A. R. W.
Journal of Chemical Physics 116 ( 2 ) 2002
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Infrared spectra of N2O-hydrogen complexes
Tang, J., McKellar, A. R. W.
Journal of Chemical Physics 117 ( 18 ) 2002
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Infrared spectrum of the OCS-He complex
Tang, J., McKellar, A. R. W.
Journal of Chemical Physics 115 ( 7 ) 2001
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Infrared spectroscopy of H3O+: The nu(1) fundamental band
Tang, J., Oka, T.
Journal of Molecular Spectroscopy 196 ( 1 ) 1999
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Detection of the triplet HC4N radical by Fourier transform microwave spectroscopy
Tang, J. A., Sumiyoshi, Y., Endo, Y.
Chemical Physics Letters 315 ( 1-2 ) 1999
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Microwave spectrum of the FS2 radical in the ground electronic (X)over-tilde(2)A'' state
Tang, J. A., Saito, S.
Journal of Chemical Physics 104 ( 19 ) 1996
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Infrared diode laser spectroscopy of the nu(1) fundamental and nu(1)+nu(5)-nu(5) bands of the C3S molecule
Takano, S., Tang, J., Saito, S.
Journal of Molecular Spectroscopy 178 ( 2 ) 1996
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Microwave spectroscopy of the HCCS and DCCS radicals ((X)over-tilde-(2)pi(i)) in excited vibronic states: A study of the Renner-Teller effect
Tang, J., Saito, S.
Journal of Chemical Physics 105 ( 18 ) 1996
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MICROWAVE-SPECTRUM OF THE C3S MOLECULE IN THE VIBRATIONALLY EXCITED-STATES OF BENDING MODES, NU(4) AND NU(5)
Tang, J. A., Saito, S.
Journal of Molecular Spectroscopy 169 ( 1 ) 1995
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MICROWAVE-SPECTRA OF THE ISOTOPOMERS OF HCS+ AND ITS SUBSTITUTION STRUCTURE
Tang, J., Saito, S.
Astrophysical Journal 451 ( 2 ) 1995
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REDUCED HAMILTONIAN UP TO THE 8TH ORDER FOR THE CH3OH MOLECULE
Tang, J., Takagi, K.
Journal of Molecular Spectroscopy 161 ( 2 ) 1993
Books
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『化学レポート：現状と将来』 物理化学ディビジョン
https://division.csj.jp/ 2007
MISC
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14pSK-5 Spectroscopy of Electronic Excited States of Xe Atoms in Parahydrogen Crystal
Nakajima K., Fukumi A., Kawaguchi K., Kuma S., Miyamoto Y., Momose T., Nakano I., Nanjyo H., Ohae C., Sasao N., Sato S., Taniguchi T., Tang J., Wakabayashi T., Yamaguchi T., Yoshimura M., Yuasa K.
Meeting abstracts of the Physical Society of Japan 65 ( 2 ) 22 - 22 2010.8
Presentations
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Spectral Assignment of Molecular Species in Automobile Exhaust by Infrared Laser Spectroscopy
Jian Tang, Yurika Shimamotoa, Mboup Momar Moustaphab, Chit Hnin Phyu
2025.11.29
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Infrared spectroscopy of the NO3 radical Invited
Jian Tang
8th Asian Workshop on Molecular Spectroscopy 2024.9.13
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D2-HCN分子錯体のミリ波分光
唐健, 原田賢介, 川口建太郎, 田中桂一
第23回分子分光研究会 2023.11.11
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CS 分子d3Δ-a3Πバンドの赤外発光スペクトルの解析
川口建太郎, 西口和宏, 唐健, K. Sunanda, M. D. Saksena, M. N. Deo
第23回分子分光研究会 2023.11.11
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NO3ラジカル2ν3 -ν4バンドのFTIR分光と振動準位の解析
川口建太郎, 唐健, 藤森隆彰, 石渡孝
第22回分子分光研究会 2022.11.12
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Quantum cascade laser spectroscopy of the 3 band of the NO3 radical
K. Kawaguchi, J. Tang, N. Akikusa
The 21st Symposium on Molecular Spectroscopy 2021.3.8
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Infrared laser spectroscopy of difference bands of the NO3 radical
K. Kawaguchi, J. Tang
The 20th Symposium on Molecular Spectroscopy 2020.3.20
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C2分子の赤外発光分光 Invited
唐 健
テラヘルツ分子科学研究会 高分解能分光の最近の進展と今後の展望 神戸大学分子フォトサイエンス研究センター，神戸大学理学研究科 2019.10.21
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N2O5分子のレーザー照射によるラマン振動スペクトルの観測
小田めぐみ,周藤大輔,山本奈菜子,唐 健
第13回分子科学討論会(名古屋) 2019.9.17
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CS分子 d3Δ - a3Πバンドの赤外発光スペクトルの解析
西口和宏, K Sunandab, M. D. Saksenab, M. N. Deob, 唐 健, 川口 建太郎
第19回分子分光研究会 2019.3.27
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NaSH振動励起状態のミリ波分光とab initio計算
鍵 絵里子, 唐 健, 川口 建太郎
第19回分子分光研究会 2019.3.26
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NO3ラジカルのFTIR分光と振動準位解析
川口 建太郎, 藤森 隆彰, 唐 健, 石渡 孝
第18回分子分光研究会（つくば） 2018.3.19
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近赤外CWレーザーによる気相分子のラマン振動分光
長谷川大輔, 唐 健
第18回分子分光研究会（つくば） 2018.3.19
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パルス放電におけるNH2ラジカルの可視光スペクトル
香川 洋輝, 赤塚 貴宏, 川口 建太郎, 唐 健
第18回分子分光研究会（つくば） 2018.3.19
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NO3ラジカルv1＋v3と2v3バンドの解析―低いv3振動数の再確認
川口建太郎, 藤森隆彰，唐健，石渡孝
第17回分子分光研究会 2017.5.19
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Study of infrared emission spectroscopy for the B1Δg–A1Πu and B′1Σg+–A1Πu system of C2 International coauthorship International conference
J. Tang, W. Chen, K. Kawaguchi, and P. F. Bernath
71st International Symposium on Molecular Spectroscopy 2016.6.23
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Simultaneous analysis of the Ballik-Ramsay and Phillips systems and observation of forbidden transitions between singlet and triplet states of C2 International coauthorship
14th National Conference on Chemical dynamics (China) 2015.8
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C2の多電子状態の同時摂動解析
第15回分子分光研究会 2015
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Deperturbation analysis for the a3PI and c3SIGMA of C2
70th International Symposium on Molecular Spectroscopy 2015
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Simultaneous analysis of the Ballik-Ramsay and Phillips systems of C2 and observation of forbidden transitions between singlet and triplet states
Symposium on Advanced Molecular Spectroscopy 2015
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NO3ラジカルの2v4, 3v4-v4, v2+v4-v4バンドの赤外分光
第9回分子科学討論会 2015
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Nakajima K, Ohae C, Sasao N, Shigemasa E, Takahashi H, Tanaka M, Tang J, Uetake S, Wakabayashi T, Yoshimi A, Yoshimura M, Fukumi A, Iwayama H, Kawaguchi K, Kuma S, Miyamoto Y, Nakano I, Nakashima Y, Nanjyo H
Meeting Abstracts of the Physical Society of Japan 2013 The Physical Society of Japan
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Spectroscopy for production of macro-coherence in metastable Xe
Yoshimi A, Tang J, Fukumi A, Tanaka M, Nakano I, Wakabayashi T, Yoshimura K, Yoshimura M, Sasao N, Uetake S, Kuma S, Nakajima K, Ohae C, Miyamoto Y, Kawaguchi K, Tsutsumi Y
Meeting Abstracts of the Physical Society of Japan 2013 The Physical Society of Japan
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27pAB-5 Emission Spectra of Bi and Yb Atoms in Solid Neon Matrices
Wakabayashi T, Sasao N, Tanaka M, Tang J, Nakano I, Nanjo H, Fukumi A, Momose T, Yoshimi A, Yoshimura M, Tomioka M, Yamaguchi T, Kuma S, Miyamoto Y, Nakajima K, Uetake S, Oae C, Kawaguchi K
Meeting Abstracts of the Physical Society of Japan 2012 The Physical Society of Japan
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25pAD-3 Two-photon paired superradiance experiment using solid parahydrogen
Kuma S, Nakano I, Nanjo H, Fukumi A, Momose T, Yamaguchi T, Yuasa K, Yoshimi A, Yoshimura M, Wakabayashi T, Miyamoto Y, Nakajima K, Uetake S, Ohae C, Kawaguchi K, Sasao N, Tanaka M, Tang J
Meeting Abstracts of the Physical Society of Japan 2012 The Physical Society of Japan
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cw-OPO赤外レーザーによるCH3F分子の光章動およびFIDの観測
第10回分子分光研究会 2010
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中赤外連続波キャビティリングダウン分光法による超音速ジェット中の分子の観測
第4回分子科学討論会 2010
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cw-OPO赤外レーザーによるCH3F分子のコヒーレント過渡現象の観測
第4回分子科学討論会 2010
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固体パラ水素中の準安定Xe原子の分光研究
第4回分子科学討論会 2010
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マクロコヒーランス増幅機構を用いたニュートリノ質量分光（V）―固体マトリックス標的の量子干渉性の研究―
日本物理学会 2009
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連続発振赤外OPOレーザーによるキャビティリングダウン分光器の開発
第8回分子分光研究会 2008
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時間分解赤外レーザー吸収によるHCNとHNC分子の生成分岐比の測定
第2回分子科学討論会 2008
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Infrared Spectroscopy of (H2)N-N2O Clusters
第1回分子科学討論会 2007
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連続発振OPOレーザーによるキャビティリングダウン分光装置の開発
2007年日本化学会西日本大会 2007
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超音速分子線におけるメタン分子の回転温度
第7回分子分光研究会 2007
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Rotational Temperature of Methane in Supersonic Molecular Beam
62nd Ohio State University International Symposium on Molecular Spectroscopy 2007
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FTMW-MW Double Resonance Spectrum of the CHCHCN Radical
New Horizon of Astrochemistry and Laboratory Spectroscopy 2006
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連続波OPOを用いた広い波長域の赤外分光器
第6回分子分光研究会 2006
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cw-OPO赤外分光器を用いた水素クラスターの研究
分子構造総合討論会2006 2006
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実験室において不安定分子種の赤外およびマイクロ波分光
惑星科学と化学のあいだのクロス・トークII 2006
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Infrared spectroscopy of helium and hydrogen clusters with various molecules in gas phase
International Symposium: Chemitry and Physics of Interfatial Phenomena 2006
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Fourier Tranform Emission Spectrum of the NeH Rydberg Molecule
60th Ohio State University International Symposium on Molecular Spectroscopy 2005
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NeHリュードベリ分子のフーリエ変換発光スペクトル
第5回分子分光研究会 2005
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Infrared Spectra of Hydrogen Clusters Containing CO, N2O, or OCS
60th Ohio State University International Symposium on Molecular Spectroscopy 2005
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CO二量体のミリ波分光：新しい状態の観測
2004分子構造総合討論会 2004
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Bridging the Gap between Small Clusters and Nanodroplet: Infrared Spectroscopic Study of Molecules Solvated with Helium Atoms
第4回分子分光研究会 2004
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Infrared Spectroscopy of Molecular Clusters Solvated with He Atoms and H2 molecules in Gas Phase
New Developments in High Resolution Molecular Spectroscopic Studies Symposium Kanazawa 2004 2004
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High Resolution Infrared Spectra of Carbon Dioxide Solvated with Helium Atoms
The 59th Ohio State University International Symposium on Molecular Spectroscopy 2004
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CO二量体の実験室ミリ波観測
星間物質ワークショップ 2004
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High Resolution Infrared Spectra of Helium Clusters Seeded with OCS: He2-OCS to He8-OCS
The 17th Annual Symposium on Chemical Physics at the University of Waterloo 2003
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Infrared Spectra of Hydrogen-OCS Clusters
The 58th Ohio State University International Symposium on Molecular Spectroscopy 2003
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Infrared Spectra of (H2)N -N2O Clusters
The 19th Annual Symposium on Chemical Physics at the University of Waterloo 2003
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Infrared Studies of He, H2, and Ne Clusters Seeded with CO, OCS, or N2O
The 18th Annual Symposium on Chemical Physics at the University of Waterloo 2002
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Direct Infrared Absorption Spectra of Helium Clusters Seeded with an OCS Molecule
The 57th Ohio State University International Symposium on Molecular Spectroscopy 2002
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Infrared Spectrum of the OCS-He Complex near 2062 cm-1
The 56th Ohio State University International Symposium on Molecular Spectroscopy 2001
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FTMW分光法によるH2CCCNラジカルの検出およびTunneling反転運動の観測
分子構造総合討論会2000 2000
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Detection of Two Isomers of the Cyanovinyl Radical: H2CCCN and CHCHCN by FTMW Spectroscopy
The 55th Ohio State University International Symposium on Molecular Spectroscopy 2000
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Detection of the Triplet HC4N Radical by FT Microwave Spectroscopy
The 54th Ohio State University International Symposium on Molecular Spectroscopy 1999
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フーリエ変換マイクロ波分光法によるHC4Nラジカルの検出
分子構造総合討論会1999 1999
Research Projects
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Spectroscopic study of CH5+ molecular ion by infrared double resonance
Grant number：15K05391 2015.04 - 2018.03
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)
TANG JIAN
Grant amount：\5070000 （ Direct expense: \3900000 、 Indirect expense：\1170000 ）
CH5+ molecular ion has been detected by mass analysis in lab and on the satellite Titan of Saturn, and the infrared spectrum of CH5+ has also been observed in laboratory. Although the detection of the interstellar CH5+ is expected, it has been hindered by the failure of the spectral assignment for long time. In the present study, we aimed to reveal the spectral assignment for CH5+ by the infrared double resonance.
Although we can observe the infrared spectrum of CH5+ by the highly sensitive cavity ring-down spectroscopy, we failed to observe the CH5+ signal of infrared double resonance with a cw laser and a pulsed laser. Since there is no previous example for the observation of mid-infrared double resonance of molecular ions, the present work should be an importance step towards the future realization. -
Studies of quantum coherency of targets stored in nano-space
Grant number：21104003 2009.04 - 2015.03
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area) Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
KAWAGUCHI Kentarou, TANG Jian, NAKAJIMA Kyo, NAKAGAWA Sachiko, HIRAHARA Yasuhiro, KUBOZONO Yoshihiro, WAKABAYASHI Tomonari
Grant amount：\102570000 （ Direct expense: \78900000 、 Indirect expense：\23670000 ）
The present research is a basic one toward the detection of the paired neutrino radiation by the super-radiance phenomenon. We investigated spectroscopically a sample trapped in a low-temperature hydrogen matrix and gas-phase samples, and searched for a suitable system for the study of the relaxation process. In the gas phase, we observed FID signals, photon echo signals as coherent phenomena, and obtained the pressure dependent parameter. For comparison, we also obtained the pressure broadening parameter of the CH3F nu4 band by the Lamb dip method.
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Detection of neutrino pairs using macro coherent amplification mechanism
Grant number：21104002 2009.04 - 2015.03
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area) Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
SASAO NOBORU, NAKANO Itsuo, YOSHIMURA Motohiko, FUKUMI Atsushi, WAKABAYASHI Tomonari, TANAKA Minoru, KATSURAGAWA Masayuki, NANJO Hajime, KAWAGUCHI Kentarou, TANG Jian, KUBOZONO Yoshihiro, TANIGAKI Katsumi, NAKAJIMA Kyo, YOSHIMURA Koji, YOSHIMI Akihiro, UETAKE Satoshi, KUMA Susumu, TANIGUCHI Takashi
Grant amount：\411840000 （ Direct expense: \316800000 、 Indirect expense：\95040000 ）
"Macro-coherent amplification mechanism" is the crucial principle for success of the neutrino mass spectroscopy with atoms. The most important result of the present research was an experimental proof of the principle with a two photon process from the vibrationally excited state of para-hydrogen molecules. Actually, the initial coherent states were prepared by an adiabatic Raman process, and two photon emissions were observed. As a result, a gigantic enhancement factor of the photon yields greater than 15 orders of magnitude was confirmed compared to its natural emission rate; it was found consistent with the theoretical prediction. Thus a big step has been made forward towards the neutrino mass spectroscopy with atoms. In addition, detailed studies on super-radiance and phase relaxation etc. were conducted as basic studies using various atoms and molecules.
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ホモキラリティーの起源を探る分子化学
Grant number：20655004 2008 - 2010
日本学術振興会 科学研究費助成事業 挑戦的萌芽研究 挑戦的萌芽研究
川口 建太郎, 唐 健
Grant amount：\3400000 （ Direct expense: \3400000 ）
L体とD体は鏡像関係にあるので、反転運動によって相互に変換することができる。しかしながらアラニンなどではその反転運動のバリアーは高く簡単には変換しないため、別の分子として存在できる。一方、'軸性キラル'として知られる分子では変換のバリアーは低くなる場合がある。例としてイソプロパノール(CH3)2CHOHが研究されている。その分子のgauche formではD体とL体の交じり合いの結果、アンモニアのような反転分裂が観測されている。そのような準位からL体の性質をよく保有している状態へ赤外線を照射することにより遷移を起こさせ、それを固定すれば、最終的にはL体の濃縮につながる。
今年度、赤外線励起用光源としての利用、及び高感度分光用光源として速続発振型赤外OPOレーザーを整備した。OPOレーザーは波長1ミクロンのシードレーザー光をファイバーアンプで最大20Wまで増幅し、LiNbO3の結晶に照射した。タイ型共振器を調整し、波長3ミクロンのアイドラー光、波長1.6ミクロンのシグナル光を得た。ポンプパワー5Wでアイドラー光の出力600mWがえられた。ポンプパワーを増大すればより大きな出力が得られるので、通常の振動回転遷移の励起には十分である。またこのOPOレーザーは分子の振動回転スペクトルの実時間測定にも応用できることを確認した。その場合は、PZTによりシードレーザー光の波長を変化させ、シグナル光を固定しておけば、アイドラー光の波長が変化する。すなわち周波数にして約100GHzを200VのPZTの電圧変化で掃引できた。この掃引を速くおこなえばオシロスコープ上で吸収スペクトル線とエタロンの干渉波形を同時に観測、記録することができた。新しい分光システムの感度を見積もっているところであるが、フーリエ変換型分光器にくらべて一桁以上の感度上昇が期待できている。これまでの研究により、分子ビームでの低温分子の測定、赤外励起によるL体、D体の分離へ適用できるようになった。 -
Investigation of Hydrogen Molecular Superfluidity by Infrared Spectroscopy of Hydrogen Clusters
Grant number：17205003 2005 - 2007
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A) Grant-in-Aid for Scientific Research (A)
JIAN Tang
Grant amount：\45110000 （ Direct expense: \34700000 、 Indirect expense：\10410000 ）
Helium is the only known element which can exist in the state of superfluidity, and hydrogen molecule is the only natural candidate for superfluidity. In similar to studies for the helium clusters with molecules, the superfluidity of hydrogen molecule may be revealed by study of infrared spectroscopy of hydrogen molecular clusters in gas phase. In the present study, we observed the vibrational-rotational spectra of (para-H_2) N-N_2O and (ortho-H_2)NN_2O clusters up to N=13. The analysis of the rotational constants for the (para-H_2)NN_2O clusters showed that the rotational constants decrease monetarily with the increase of N up to N = 13, and no evidence shows up for the setup of hydrogen molecular superfluidity. For N larger than 15, the spectrum pattern of (para-H_2)N-N_O becomes irregular suddenly, which may be considered as the sign of the setup for hydrogen molecular superfluidity.
In order to study more species of hydrogen clusters, we installed a cw-OPO laser (Linos OS4500) operated in the infrared region of 1.38-2.00 um and 2.28-4.67 pm and set up an infrared absorption spectrometer equipped with a pulsed supersonic expansion and an astigmatic multiple pass (238 times) absorption cell. Initially, two simultaneous chopping modulations with different frequencies were used to suppress the output fluctuation of OPO laser by taking the signal ratio of the two detection paths with and without absorption. Later, a cavity ringdown spectrometer was built to reach higher sensitivity for detection of the hydrogen molecular clusters. Since the sensitivity of cavity ringdown spectroscopy is not affected by the power change of light source, the problem of the output fluctuation of OPO laser can be avoided ideally. We observed the very weak rovibratational transitions of methane and found that the detectable minimum absorption coefficient is 1× 10^<-7> cm^<-1> when the frequency of the OPO laser is not tuned. The spectra of the hydrogen molecular clusters should be observed with further improvement of the sensitivity.
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