Centers & Labs

RIKEN Center for Advanced Photonics

Molecular Reaction Dynamics Research Team

Team Leader: Toshinori Suzuki (D.Sci.)
Toshinori  Suzuki(D.Sci.)

Chemical reactions are driven by electrons, which are much lighter than nuclei in molecules. For understanding the origin of transformation of nuclear geometry and elucidating intricate and useful solvent effects on a chemical reaction, real-time observation of ultrafast changes of the electronic state in reacting molecules is essential. Thus, we carry out ultrafast photoelectron spectroscopy on chemical reactions in the gas and solution phases using femtosecond ultraviolet lasers, extreme ultraviolet and X-ray free electron lasers, and soft X-ray synchrotron radiation at SPring-8. Chemical reaction dynamics studies using state-of-the-art photon sources at RIKEN allow us unprecedented access to the ultrafast dynamics of electrons in chemical reactions.

Main Research Field


Related Research Fields

Physics / Materials Sciences

Research Subjects

  • Ultrafast photoelectron spectroscopy of chemical reactions in gas and liquid phases
  • Development of ultrafast vacuum ultraviolet lasers
  • Soft X-ray photoelectron spectroscopy
  • Ultrafast spectroscopy using a hard X-ray free electron laser

Selected Publications

  1. Yuki Obara, Tetsuo Katayama, Yoshihiro Ogi, Takayuki Suzuki, Naoya Kurahashi, Shutaro Karashima, Yuhei Chiba, Yusuke Isokawa, Tadashi Togashi, Yuichi Inubushi, Makina Yabashi, Toshinori Suzuki and Kazuhiko Misawa:
    "Femtosecond time-resolved X-ray absorption spectroscopy of liquid using a hard X-ray free electron laser in a dual-beam dispersive detection scheme"
    Optics Express, submitted (2013)
  2. Kiyoshi Nishizawa, Keijiro Ohshimo, and Toshinori Suzuki:
    "Vacuum ultraviolet and soft X-ray photoelectron spectroscopy of liquid beams using a hemispherical photoelectron spectrometer with a multistage differential pumping system"
    Journal of Chinese Chemical Society, 60, 12, 1403-1410 (2013), DOI: 10.1002/jccs.201300513
  3. Tetsuo Katayama, Yuichi Inubushi, Yuki Obara, Takahiro Sato, Tadashi Togashi, Kensuke Tono, Takaki Hatsui, Takashi Kameshima, Atanu Bhattacharya, Yoshihiro Ogi, Naoya Kurahashi, Kazuhiko Misawa, Toshinori Suzuki, and Makina Yabashi:
    "Femtosecond x-ray absorption spectroscopy with hard x-ray free electron laser"
    Applied Physics Letters, 103(13), 131105 (2013),
  4. Alexander Humeniuk, Matthias Wohlgemuth, Toshinori Suzuki, and Roland Mitric:
    "Time-resolved photoelectron imaging spectra from non-adiabatic molecular dynamics simulations"
    The Journal of Chemical Physics, 139, 134104 (2013),
  5. Yoshihiro Ogi, Hiroshi Kohguchi and Toshinori Suzuki:
    "Deuterium isotope effects in the polyatomic reaction of O(1D2) + CH4 → OH + CH3"
    Physical Chemistry Chemical Physics, 15, 12946-12957 (2013), DOI: 10.1039/C3CP51680F
  6. Toshinori Suzuki:
    "Visualization of chemical reaction dynamics: Toward understanding complex polyatomic reactions"
    Proceedings of Japan Academy Series B, 89(1), 1-15. (2013), doi: 10.2183/pjab.89.1
  7. Toshinori Suzuki:
    "Time-resolved photoelectron spectroscopy of non-adiabatic electronic dynamics in gas and liquid phases"
    International Reviews in Physical Chemistry, 31, 265-318 (2012), DOI:10.1080/0144235X.2012.699346
  8. Peng Zuo, Takao Fuji, Takuya Horio, Shunsuke Adachi, and Toshinori Suzuki:
    "Simultaneous generation of ultrashort pulses at 158 and 198 nm in a single filamentation cell by cascaded four-wave mixing in Ar"
    Applied Physics B 108, 815–819 (2012), DOI:10.1007/s00340-012-5146-y
  9. Yoshi-Ichi Suzuki, Ying Tang, and Toshinori Suzuki:
    "Time-energy mapping of photoelectron angular distribution: application to photoionization stereodynamics of Nitric Oxide"
    Physical Chemistry Chemical Physics, 14, 7309-7320 (2012), DOI:10.1039/C2CP40308K
  10. Takuya Horio, Huan Shen, Shunsuke Adachi, Toshinori Suzuki:
    "Photoelectron spectra of solvated electrons in bulk water, methanol, and ethanol"
    Chemical Physics Letters, 535, 12-16 (2012), DOI:10.1016/j.cplett.2012.03.051

Lab Members

Principal Investigator

Toshinori Suzuki
Team Leader

Core Members

Yoshihiro Ogi
Senior Scientist
Suet Yi Liu
Postdoctoral Researcher
Nathaniel Chung-Ming Bartlett
Postdoctoral Researcher

Contact information

Chemistry and Materials Physics Building, S407
2-1 Hirosawa, Wako, Saitama 351-0198, Japan
Tel: +81-(0)48-467-1433
Fax: +81-(0)48-467-1403

Email: t-suzuki [at]