Research field (2)：
Particle, nuclear, cosmic-ray, and astrophysics - experiment
, Semiconductors, optical and atomic physics
Research keywords (5)：
放射線物理
, 原子物理
, 原子分子衝突
, highly charged ion
, atomic collision
Research theme for competitive and other funds (32)：
2022 - 2026 Atomic physics using coherent resonance excitation of high energy heavy ions by crystal fields
2021 - 2026 Exploring and controlling of extremely slow dynamics in isolated quantum few-body systems
2023 - 2024 宇宙観測検出器と量子ビームの出会い。新たな応用への架け橋。
2018 - 2023 high-precision experiments in atomic and molecular physics using a negative muon beam and their astrophysical application
2018 - 2023 Toward new frontiers : Encounter and synergy of state-of-the-art astronomical detectors and exotic quantum beams
2014 - 2019 Interdisciplinary science explored by cryogenic electrostatic storage ring: from astrochemistry to radiation biology
2014 - 2017 極低温静電型イオン蓄積リングが拓く原子分子ダイナミクス研究
2012 - 2017 Evolution of positronium beam science using the technique of photodetachment of positronium negative ions
2007 - 2011 Atomic physics using resonant coherent excitation with crystal fields
2004 - 2006 Resonant coherent excitation of heavy ions by crystal field
2002 - 2005 Collision of cold ions stored in an electrostatic ion storage ring
2002 - 2003 STUDY OF ATOM MOLECULE COLLISIONS WITH ELECTROSTATIC ION STRAGE RING
2001 - 2003 HIGH PRECISION SPECTROSCOPY OF HIGHLY-CHARGED HEAVY IONS WITH USE OF RESONANT COHERENT EXCITATI
2003 - 静電型イオン蓄積リングをもちいた多原子分子イオンの衝突実験研究
1996 - 1997 Study of the number distribution of swift ion induced secondary electrons from a clean thin foil under UHV condition
1995 - 1997 超高感度表面水素3次元検出装置の開発
1995 - 1997 Nuclear Okorokov effect of heavy ions with relativistic energy
1995 - 1995 IniFial trapping process of ultra slow antiprotons
1994 - 1995 A Study of a Positron Lifetime in a Rare Gas Adsobed on a HOPG Surface
1994 - 1995 Study of initial stages of antiproton trapping processes
1993 - 1994 パルス状単色陽電子ビームによるHOPG表面上の陽電子寿命の研究
1993 - 1993 短寿命核を用いた固体内拡散、表面拡散の実時間測定
1991 - 1992 Studies Secondary Electron Emission in Slow Antiproton-Matter
1990 - 1991 Study of the surface of magnetic material with multi-electron cature process
1989 - 1991 Meson Science Research with Intense Muon Beam
1990 - 1990 Deexcitation of Resonant Coherently Excited Heavy Ions
1989 - 1990 Studies on Secondary Electron Emission in Antiproton-Foil Collisions
高速多価イオン衝突による励起、電離機構及び多価イオンの分光学的研究
結晶場による高速重イオン干渉性共鳴励起現象の観測
Atomic and Molecular ion collision research using electrostatic ion storage ring
Study of excitation and ionization in swift highly charged ion collisions, and its spectroscopy
Observation of resonant coherent excitation of relativistic heavy ions by crystal field
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Papers (178)：
T. Okumura, T. Azuma, D. A. Bennett, W. B. Doriese, M. S. Durkin, J. W. Fowler, J. D. Gard, T. Hashimoto, R. Hayakawa, Y. Ichinohe, et al. Few-Electron Highly Charged Muonic Ar Atoms Verified by Electronic K X Rays. Physical Review Letters. 2025
Yoshiki Miya, Naoki Kimura, Daiki Ito, Priti, Masaaki Baba, Susumu Kuma, Toshiyuki Azuma, Nobuyuki Nakamura. Laser spectroscopy of the QED-sensitive transition in Ar 14 +. New Journal of Physics. 2025
X. M. Tong, K. Tőkési, D. Kato, T. Okumura, S. Okada, T. Azuma. Orbital Collapse in Exotic Atoms and Its Effect on Dynamics. Physical Review Letters. 2025
Sakumi Harayama, Susumu Kuma, Naoki Kimura, Kiattichart Chartkunchand, Masaaki Baba, Tatsuhiro Murakami, Toshiyuki Takayanagi, Kiyoshi Yagi, Takayuki Yamaguchi, Yuji Nakano, et al. Fermi resonance in the radiative vibrational cooling dynamics of N2O+. Physical Review A. 2025
Gonçalo Baptista, Shikha Rathi, Michael Roosa, Quentin Senetaire, Jonas Sommerfeldt, Toshiyuki Azuma, Daniel Becker, Francois Butin, Ofir Eizenberg, Joseph Fowler, et al. Towards Precision Spectroscopy of Antiprotonic Atoms for Probing Strong-field QED. Proceedings of International Conference on Exotic Atoms and Related Topics and Conference on Low Energy Antiprotons - PoS(EXA-LEAP2024). 2025. 085-085
"Incident and exit charge state dependence of secondary electron emission from a carbon foil by the passage of swift oxygen and carbon ions"
"Ionization of Solids by Heavy Particle"(edited by R. A. Baragiora, Plenum Press, New York) 1993
"Pulse Radiolysis in Irradiated Systems"
edited by Y. Tabata, CRC Uniscience Series, 1989 1989
Education (4)：
- 1988 The University of Tokyo
- 1988 The University of Tokyo Graduate School, Division of Engineering
- 1983 The University of Tokyo The Faculty of Engineering
- 1983 The University of Tokyo Faculty of Engineering
Professional career (1)：
(BLANK) (The University of Tokyo)
Work history (6)：
2000 - 2004 Tokyo Metropolitan University
1998 - 2000 University of Tsukuba
1998 - 2000 University of Tsukuba, Associate Professor
