研究概要

主要論文

• 1. Alena Ananyeva, Angela Bräuning-Demian, Yuji Nakano, Ken-ichiro Komaki, Yoichi Nakai, Yoko Shiina, Eiichi Takada, Takashi Murakami, Alexey V. Stysin, and Toshiyuki Azuma.:
  "Doubly resonant coherent excitation in the x-ray regime: 1s−3d transition in H-like Ar17+"
  Phys. Rev. A 109, 053101 (2024)
• 2. Arisa Iguchi, Amandeep Singh, Stefan Bergmeister, Andrew A. Azhagesan, Kenta Mizuse, Asuka Fujii, Hajime Tanuma, Toshiyuki Azuma, Paul Scheier, Susumu Kuma, and Andrey F. Vilesov.:
  "Isolation and Infrared Spectroscopic Characterization of Hemibonded Water Dimer Cation in Superfluid Helium Nanodroplets"
  J. Phys. Chem. Lett. 14, 36, 8199–8204 (2023)
• 3. Takuma Okumura, Toshiyuki Azuma, Douglas A. Bennett, I-Huan Chiu, William B. Doriese, Malcolm S. Durkin, Joseph W. Fowler, Johnathon D. Gard, Tadashi Hashimoto, Ryota Hayakawa, Gene C. Hilton, Yuto Ichinohe, Paul Indelicato, Tadaaki Isobe, Sohtaro Kanda, Miho Katsuragawa, Naritoshi Kawamura, Yasushi Kino, Kairi Mine, Yasuhiro Miyake, Kelsey M. Morgan, Kazuhiko Ninomiya, Hirofumi Noda, Galen C. O’Neil, Shinji Okada, Kenichi Okutsu, Nancy Paul, Carl D. Reintsema, Dan R. Schmidt, Koichiro.:
  "Proof-of-Principle Experiment for Testing Strong-Field Quantum Electrodynamics with Exotic Atoms: High Precision X-Ray Spectroscopy of Muonic Neon"
  Phys. Rev. Lett. 130, 173001 (2023)
• 4. Naoki Kimura, Priti, Yasutaka Kono, Pativate Pipatpakorn, Keigo Soutome, Naoki Numadate, Susumu Kuma, Toshiyuki Azuma & Nobuyuki Nakamura.:
  "Hyperfine-structure-resolved laser spectroscopy of many-electron highly charged ions"
  Commun. Phys. 6, 8 (2023)
• 5. Masatomi Iizawa, Susumu Kuma, Naoki Kimura, Kiattichart Chartkunchand, Sakumi Harayama, Toshiyuki Azuma, and Yuji Nakano.:
  "Photodetachment Spectroscopy of Highly Excited C2– and Their Temporal Evolution in the Ion Storage Ring RICE"
  J. Phys. Soc. Jpn. 91, 084302 (2022)
• 6. S. Iida, S. Kuma, M. Kuriyama, T. Furukawa, M. Kusunoki, H. Tanuma, K. Hansen, H. Shiromaru, and T. Azuma.:
  "IR-photon quenching of delayed electron detachment from hot pentacene anions"
  Phys. Rev. A 104, 043114 (2021)
• 7. T. Okumura, T. Azuma, D. A. Bennett, P. Caradonna, I. Chiu, W. B. Doriese, M. S. Durkin, J. W. Fowler, J. D. Gard, T. Hashimoto, R. Hayakawa, G. C. Hilton, Y. Ichinohe, P. Indelicato, T. Isobe, S. Kanda, D. Kato, M. Katsuragawa, N. Kawamura, Y. Kino, M. K. Kubo, K. Mine, Y. Miyake, K. M. Morgan, K. Ninomiya, H. Noda, G. C. O’Neil, S. Okada, K. Okutsu, T. Osawa, N. Paul, C. D. Reintsema, D. R. Schmidt, K. Shimomura, P. Strasser, H. Suda, D. S. Swetz, T. Takahashi, S. Takeda, S. Takeshita, M. Tampo, H. Tatsuno, X. M. Tong, Y. Ueno, J. N. Ullom, S. Watanabe, and S. Yamada.:
  "Deexcitation Dynamics of Muonic Atoms Revealed by High-Precision Spectroscopy of Electronic K X rays"
  Phys. Rev. Lett. 127, 053001 (2021)
• 8. Nancy Paul, Guojie Bian, Toshiyuki Azuma, Shinji Okada, and Paul Indelicato.:
  "Testing Quantum Electrodynamics with Exotic Atoms"
  Phys. Rev. Lett. 126, 173001 (2021)
• 9. R. Igosawa, A. Hirota, N. Kimura, S. Kuma, K. C. Chartkunchand, P. M. Mishra, M. Lindley, T. Yamaguchi, Y. Nakano, and T. Azuma.:
  "Photodissociation spectroscopy of N2O+ in the ion storage ring RICE"
  J. Chem. Phys. 153, 184305 (2020)
• 10. A. Hirota, R. Igosawa, N. Kimura, S. Kuma, K. C. Chartkunchand, P. M. Mishra, M. Lindley, T. Yamaguchi, Y. Nakano, and T. Azuma.:
  "Radiative cooling dynamics of isolated N2O+ ions in a cryogenic electrostatic ion storage ring"
  Phys. Rev. A 102, 023119 (2020)

研究成果（プレスリリース）

• 

  2025年2月22日
  水素分子の超流動の確認に成功

• 

  2023年5月10日
  量子電磁力学をエキゾチック原子で検証

• 

  2023年1月24日
  多価イオンの新分光法を実証

• 

  2021年7月26日
  最先端超伝導検出器で探るミュオン原子形成過程の全貌

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