Updated on 2025/07/12

写真b

 
NAKANO Yuji
 
*Items subject to periodic update by Rikkyo University (The rest are reprinted from information registered on researchmap.)
Affiliation*
College of Science Department of Physics
Graduate School of Science Doctoral Program in Physics
Graduate School of Science Master's Program in Physics
Title*
Professor
Degree
博士（理学） （ 首都大学東京 ）
Campus Career*
  • 4 2024 - Present 
    College of Science   Department of Physics   Professor
  • 4 2024 - Present 
    Graduate School of Science   Master's Program in Physics   Professor
  • 4 2024 - Present 
    Graduate School of Science   Doctoral Program in Physics   Professor
  • 4 2017 - 3 2024 
    College of Science   Department of Physics   Associate Professor
  • 4 2017 - 3 2024 
    Graduate School of Science   Master's Program in Physics   Associate Professor
  • 4 2017 - 3 2024 
    Graduate School of Science   Doctoral Program in Physics   Associate Professor

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Research Areas

  • Natural Science / Astronomy

  • Energy Engineering / Quantum beam science

  • Natural Science / Space and planetary sciences

  • Natural Science / Semiconductors, optical properties of condensed matter and atomic physics

Research History

  • 4 2024 - Present 
    立教大学, 理学部 物理学科, 教授

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  • 4 2017 - Present 
    RIKKYO UNIVERSITY   College of Science Department of Physics   Associate Professor

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  • 4 2017 - Present 
    RIKKYO UNIVERSITY   Graduate School of Science Field of Study: Physics   Associate Professor

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  • 4 2017 - Present 
    RIKKYO UNIVERSITY   Graduate School of Science Field of Study: Physics   Associate Professor

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  • 4 2016 - 3 2017 
    RIKEN   AMO Physics Laboratory   Senior Research Scientist

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  • 4 2010 - 3 2016 
    RIKEN   AMO Physics Laboratory   Research Scientist

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  • 4 2009 - 3 2010 
    Tokyo Metropolitan University   Department of Physics   Special researcher of the Japan Society for the Promotion of Science

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  • 11 2009 - 2 2010 
    Max-Planck Institute for Nuclear Physics   JSPS Fellow

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Education

  • 4 2006 - 3 2009 
    Tokyo Metropolitan University   Graduate School, Division of Science and Engineering

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    Country： Japan

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  • 4 2004 - 3 2006 
    Tokyo Metroplitan University   Graduate School, Division of Natural Science

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    Country： Japan

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  • 4 2000 - 3 2004 
    Rikkyo University   Faculty of Science

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    Country： Japan

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Committee Memberships

  • 4 2023 - 3 2025 
    日本物理学会   会誌編集委員

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  • 4 2021 - 3 2022 
    原子衝突学会   編集担当幹事・運営委員

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  • 4 2016 - 3 2018 
    原子衝突学会   庶務担当幹事・運営委員

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  • 4 2016 - 3 2018 
    日本物理学会   領域運営委員

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    Committee type：Academic society

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Awards

  • 3 2018  
    The Physical Society of Japan  Young Scientist Award 

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    Award type：International academic award (Japan or overseas)  Country：Japan

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  • 8 2010  
    The Young Scientist Award of the Society for Atomic Collision Research 

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    Award type：Award from Japanese society, conference, symposium, etc.  Country：Japan

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Papers

  • Doubly resonant coherent excitation in the x-ray regime: 1s−3d transition in H-like Ar17+ Peer-reviewed

    Alena Ananyeva, Angela Bräuning-Demian, Yuji Nakano, Ken-ichiro Komaki, Yoichi Nakai, YOKO SHIINA, Eiichi Takada, Takeshi Murakami, Alexey Stysin, Toshiyuki Azuma

    Physical Review A   2 5 2024

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1103/physreva.109.053101

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  • Generation of collimated far-ultraviolet (FUV) light using the laser-produced metal plasma Peer-reviewed

    H. Ohnishi, S. Tamaki, Y. Shiina, Y. Nakano

    Journal of Applied Physics134 ( 1 )   6 7 2023

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    Authorship：Last author,　Corresponding author   Publishing type：Research paper (scientific journal)   Publisher：AIP Publishing  

    Laser-produced plasma is a promising compact light source applicable in a broad range of wavelengths. We performed a spectroscopic analysis and plasma characterization of the laser-produced plasma of Al, Fe, Cu, and Inconel alloy (Ni/Cr/Fe) to explore their potential applications in the far-ultraviolet (FUV) region where these methods are yet widely exploited. The emission spectrum from each target exhibited a characteristic spectral profile over the wavelength range from 120 to 250 nm. These results were well reproduced by spectral simulations, providing detailed information on the plasma. We also developed a dedicated parabolic mirror that successfully collimated the plasma radiation into beam with an intensity enhanced by a factor of ∼35. Our study demonstrated the generation of collimated FUV radiation with an intensity of a 107 photons/pulse/1% bandwidth as a potent laboratory-size light source for various applications.

    DOI： 10.1063/5.0151307

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  • Photodetachment Spectroscopy of Highly Excited \(\text{C}_{2}^{ - }\) and Their Temporal Evolution in the Ion Storage Ring RICE

    Masatomi Iizawa, Susumu Kuma, Naoki Kimura, Kiattichart Chartkunchand, Sakumi Harayama, Toshiyuki Azuma, Yuji Nakano

    Journal of the Physical Society of Japan91 ( 8 )   15 8 2022

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    Authorship：Last author,　Corresponding author   Publishing type：Research paper (scientific journal)   Publisher：Physical Society of Japan  

    DOI： 10.7566/JPSJ.91.084302

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  • Status of the Laser Spectroscopy and Merged-beam Experiments at RICE Peer-reviewed

    Y. Nakano, R. Igosawa, S. Iida, S. Okada, M. Lindley, S. Menk, R. Nagaoka, T. Hashimoto, S. Yamada, T. Yamaguchi, S. Kuma, T. Azuma

    JPS Conf. Ser.35   011006   15 6 2021

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    Authorship：Lead author   Publishing type：Research paper (international conference proceedings)   Publisher：Journal of the Physical Society of Japan  

    DOI： 10.7566/jpscp.35.011006

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  • Photodissociation spectroscopy of N2O+ in the ion storage ring RICE Peer-reviewed

    R. Igosawa, A. Hirota, N. Kimura, S. Kuma, K. C. Chartkunchand, P. M. Mishra, M. Lindley, T. Yamaguchi, Y. Nakano, T. Azuma

    The Journal of Chemical Physics153 ( 18 ) 184305 - 184305   14 11 2020

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    Publishing type：Research paper (scientific journal)   Publisher：AIP Publishing  

    DOI： 10.1063/5.0027805

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  • Radiative cooling dynamics of isolated N2O+ ions in a cryogenic electrostatic ion storage ring Peer-reviewed

    A. Hirota, R. Igosawa, N. Kimura, S. Kuma, K. C. Chartkunchand, P. M. Mishra, M. Lindley, T. Yamaguchi, Y. Nakano, T. Azuma

    Physical Review A102 ( 2 )   26 8 2020

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    Publishing type：Research paper (scientific journal)   Publisher：American Physical Society (APS)  

    DOI： 10.1103/physreva.102.023119

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    Other Link： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevA.102.023119/fulltext

  • Vibrational and rotational cooling dynamics of the triatomic molecular ion N<inf>2</inf>O<sup>+</sup>stored in RICE

    R. Igosawa, R. Igosawa, A. Hirota, A. Hirota, T. Yamaguchi, M. Lindley, K. Chartkunchand, Y. Nakano, S. Kuma, T. Azuma, T. Azuma

    Journal of Physics: Conference Series1412 ( 23 )   11 6 2020

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    Publishing type：Research paper (international conference proceedings)  

    DOI： 10.1088/1742-6596/1412/23/232002

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  • Towards investigations of pre-cooled ions stored in the RICE storage ring via action spectroscopy

    K. C. Chartkunchand, S. Menk, A. Hirota, A. Hirota, R. Igosawa, R. Igosawa, S. Kuma, Y. Nakano, Y. Nakano, T. Azuma, T. Azuma

    Journal of Physics: Conference Series1412 ( 23 )   11 6 2020

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    Publishing type：Research paper (international conference proceedings)  

    DOI： 10.1088/1742-6596/1412/23/232003

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  • Photodetachment of negative ion beams for the ion-neutral merged-beam experiments at RICE Peer-reviewed

    M Iizawa, S Iida, S Kuma, T Azuma, Y Nakano

    Journal of Physics: Conference Series1412   122006 - 122006   1 2020

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    Publishing type：Research paper (scientific journal)   Publisher：IOP Publishing  

    DOI： 10.1088/1742-6596/1412/12/122006

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    Other Link： https://iopscience.iop.org/article/10.1088/1742-6596/1412/12/122006

  • A cryogenic linear ion trap beamline for providing keV ion bunches Peer-reviewed

    Menk, S., Bertier, P., Enomoto, Y., Masunaga, T., Majima, T., Nakano, Y., Azuma, T.

    Review of Scientific Instruments89 ( 11 ) 113110 - 113110   2018

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1063/1.5051044

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  • Design and commissioning of the RIKEN cryogenic electrostatic ring (RICE) Peer-reviewed

    Nakano, Y., Enomoto, Y., Masunaga, T., Menk, S., Bertier, P., Azuma, T.

    Review of Scientific Instruments88 ( 3 ) 033110 - 033110   2017

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    Authorship：Lead author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：AIP Publishing LLC  

    DOI： 10.1063/1.4978454

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  • Enhancing the energy resolution of resonant coherent excitation using the cooled U89+ beam extracted from the ESR

    Y. Nakano, A. Ananyeva, S. Menk, A. Bräuning-Demian, H. Bräuning, C. Kleffner, Th Stöhlker, T. Azuma

    Journal of Physics: Conference Series635 ( 3 )   7 9 2015

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Institute of Physics Publishing  

    DOI： 10.1088/1742-6596/635/3/032016

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  • Development and commissioning of RIken Cryogenic Electrostatic ring (RICE)

    Y. Enomoto, Y. Nakano, T. Masunaga, T. Azuma

    Journal of Physics: Conference Series635 ( 2 ) 022028   9 2015

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    Language：English   Publishing type：Research paper (international conference proceedings)  

    DOI： 10.1088/1742-6596/635/2/022028

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  • Metastable Ar17+ (2s) production by Stark-assisted resonant coherent excitation Peer-reviewed

    Y. Nakano, A. A. Sokolik, A. V. Stysin, Y. Nakai, K. Komaki, E. Takada, T. Murakami, T. Azuma

    Journal of Physics B48 ( 14 ) 144026 - 144026   7 2015

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1088/0953-4075/48/14/144026

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  • Stark effect in resonant coherent excitation of 2s electron of Li-like Fe23+ ions channeling in a Si crystal

    Y. Nakai, Y. Nakano, T. Ikeda, Y. Kanai, T. Kambara, N. Fukunishi, C. Kondo, T. Azuma, K. Komaki, Y. Yamazaki

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS315   94 - 98   11 2013

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.nimb.2013.05.072

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  • X-ray and Auger electron study of highly charged ions using resonant coherent excitation

    Y. Nakano, A. Hatakeyama, Y. Nakai, K. Komaki, E. Takada, T. Murakami, T. Azuma

    NIFS Proceedings91   87 - 92   10 2013

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    Language：English   Publishing type：Research paper (scientific journal)  

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  • Effects of fine-structure depolarization studied by resonant coherent excitation of H-like Ar17+

    Y. Nakano, A. Hatakeyama, Y. Nakai, K. Komaki, E. Takada, T. Murakami, T. Azuma

    PHYSICA SCRIPTAT156   014061 - 014061   9 2013

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1088/0031-8949/2013/T156/014061

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  • Resonant coherent excitation of the lithiumlike uranium ion: A scheme for heavy-ion spectroscopy Peer-reviewed

    Y. Nakano, Y. Takano, T. Ikeda, Y. Kanai, S. Suda, T. Azuma, H. Bräuning, A. Bräuning-Demian, D. Dauvergne, Th. Stöhlker, Y. Yamazaki

    Physical Review A - Atomic, Molecular, and Optical Physics87 ( 6 ) 060501 - 060501   7 6 2013

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1103/PhysRevA.87.060501

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  • Resonant coherent excitation of the lithiumlike uranium ion: A scheme for heavy-ion spectroscopy Peer-reviewed

    Y. Nakano, Y. Takano, T. Ikeda, Y. Kanai, S. Suda, T. Azuma, H. Braeuning, A. Braeuning-Demian, D. Dauvergne, Th. Stoehlker, Y. Yamazaki

    PHYSICAL REVIEW A87 ( 6 )   6 2013

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1103/PhysRevA.87.060501

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  • Selective production of the doubly excited 2p(2) (D-1) state in He-like Ar16+ ions by resonant coherent excitation Peer-reviewed

    Y. Nakano, S. Suda, A. Hatakeyama, Y. Nakai, K. Komaki, E. Takada, T. Murakami, T. Azuma

    PHYSICAL REVIEW A85 ( 2 ) 020701 - 020701   2 2012

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1103/PhysRevA.85.020701

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  • Resonant coherent excitation of 191.1 MeV/u U89+ ions planar-channeled in a silicon crystal Peer-reviewed

    A. Bräuning-Demian, A. Ananyevna, T. Azuma, H. Bräuning, D. Dauvergne, Y. Kanai, Y. Nakano, T. Shindo, S. Suda, Y. Yamazaki

    Journal of Physics: Conference Series388 ( 8 )   2012

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Institute of Physics Publishing  

    DOI： 10.1088/1742-6596/388/8/082036

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  • Convoy electron emission following ionization of highly-charged ions excited by resonant coherent excitation Peer-reviewed

    S. Suda, Y. Nakano, K. Metoki, T. Shindo, S. Ohtsuki, T. Azuma, A. Hatakeyama, K. Komaki, Y. Nakai, E. Takada, T. Murakami

    Journal of Physics: Conference Series388 ( 13 )   2012

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Institute of Physics Publishing  

    DOI： 10.1088/1742-6596/388/13/132013

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  • Observation of intrashell radiative decay of Li-like uranium (2p(3/2)-2s(1/2)) using silicon drift detectors

    Y. Nakano, Y. Takano, T. Shindo, T. Ikeda, Y. Kanai, S. Suda, T. Azuma, H. Braeuning, A. Braeuning-Demian, Th Stoehlker, D. Dauvergne, Y. Yamazaki

    PHYSICA SCRIPTAT144   014010 - 014010   6 2011

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1088/0031-8949/2011/T144/014010

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  • Electron emission from fast heavy ions associated with resonant coherent excitation

    S. Suda, Y. Nakano, K. Metoki, T. Azuma, Y. Takano, A. Hatakeyama, Y. Nakai, K. Komaki, E. Takada, T. Murakami

    PHYSICA SCRIPTAT144   014044 - 014044   6 2011

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1088/0031-8949/2011/T144/014044

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  • Observation of intrashell radiative decay of Li-like uranium (2p 3/2-2s1/2) using silicon drift detectors Peer-reviewed

    Y. Nakano, Y. Takano, T. Shindo, T. Ikeda, Y. Kanai, S. Suda, T. Azuma, H. Bräuning, A. Bräuning-Demian, Th Stöhlker, D. Dauvergne, Y. Yamazaki

    Physica Scripta TT144   2011

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    Language：English   Publishing type：Research paper (international conference proceedings)  

    DOI： 10.1088/0031-8949/2011/T144/014010

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  • Alignment of fast heavy ions using periodic crystal fields

    Y. Nakano, K. Metoki, T. Azuma, A. Hatakeyama, Y. Nakai, K. Komaki, Y. Yamazaki, E. Takada, T. Murakami

    Journal of Physics: Conference Series194 ( 13 )   24 12 2009

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Institute of Physics Publishing  

    DOI： 10.1088/1742-6596/194/13/132036

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  • 結晶周期場による高速重イオンの内部状態操作

    中野祐司

        25 3 2009

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    Language：English   Publishing type：Doctoral thesis  

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  • Polarization Control in Three-Dimensional Resonant Coherent Excitation Peer-reviewed

    Y. Nakano, C. Kondo, A. Hatakeyama, Y. Nakai, T. Azuma, K. Komaki, Y. Yamazaki, E. Takada, T. Murakami

    PHYSICAL REVIEW LETTERS102 ( 8 ) 085502 - 085502   2 2009

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1103/PhysRevLett.102.085502

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  • Resonant coherent excitation of Li-like Ar15+ Ions in a Thin Si crystal

    Y. Nakano, T. Inoue, T. Azuma, A. Hatakeyama, Y. Nakai, K. Komaki, Y. Yamazaki, E. Takada, T. Murakami

    Journal of Physics: Conference Series163 ( Hci 2008 ) 012094 - 012094   2009

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Physics Publishing  

    DOI： 10.1088/1742-6596/163/1/012094

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  • Dressed Atoms in Flight through a Periodic Crystal Field: X-VUV Double Resonance Peer-reviewed

    Y. Nakai, Y. Nakano, T. Azuma, A. Hatakeyama, C. Kondo, K. Komaki, Y. Yamazaki, E. Takada, T. Murakami

    Physical Review Letters101 ( 11 ) 113201   9 2008

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1103/PhysRevLett.101.113201

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  • {Doubly-resonant coherent excitation of HCI planar channeled in a Si crystal}

    Nakano, Y, Masugi, S, Muranaka, T, Azuma, T, Kondo, C, Hatakeyama, A, Komaki, K, Yamazaki, Y, Takada, E, Murakami, T

    Journal of Physics: Conference Series58   359 - 359   3 2007

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    Language：English  

    DOI： 10.1088/1742-6596/58/1/081

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  • Trajectory dependent resonant coherent excitation of planar-channeled ions in a thin Si crystal

    C. Kondo, S. Masugi, T. Muranaka, A. Ishikawa, Y. Nakano, T. Azuma, A. Hatakeyama, K. Komaki, Y. Nakai, Y. Yamazaki, E. Takada, T. Murakami

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS256 ( 1 ) 157 - 161   3 2007

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.nimb.2006.11.115

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  • Three-dimensional resonant coherent excitation of nonchanneling ions in a crystal Peer-reviewed

    C. Kondo, S. Masugi, Y. Nakano, A. Hatakeyama, T. Azuma, K. Komaki, Y. Yamazaki, T. Murakami, E. Takada

    PHYSICAL REVIEW LETTERS97 ( 13 ) 135503 - 135503   9 2006

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1103/PhysRevLett.97.135503

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Misc.

  • {6.2.3 Interaction between Heavy Ion Beams at Several Hundreds MeV/u and Crystal Targets --Three-dimensional Resonant Coherent Excitation--} Invited Peer-reviewed

      68 ( 8 ) 517 - 517   8 2019

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

    DOI： 10.3769/radioisotopes.68.517

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  • {6.2.2 Several 100 MeV/u Heavy Ions and a Crystal Target I--Two Dimensional Resonant Coherent Excitation--} Invited Peer-reviewed

      68 ( 8 ) 501 - 501   8 2019

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

    DOI： 10.3769/radioisotopes.68.501

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  • コヒーレント共鳴励起による多価イオンの精密分光 Invited Peer-reviewed

    中野祐司, 東俊行

    原子衝突学会誌13 ( 6 ) 117 - 117   2016

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)  

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  • 極低温静電型イオン蓄積リングの開発 III

    榎本嘉範, 中野祐司, 増永拓也, 木崎達也, 木崎達也, MENK S., BERTIER P., BERTIER P., 東俊行, 東俊行

    日本物理学会講演概要集(CD-ROM)70 ( 1 )   2015

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  • イオン蓄積リングRICEにおける長時間イオン閉じ込め

    中野祐司, 榎本嘉範, 増永拓也, 東俊行, 東俊行

    原子衝突学会年会講演概要集40th   2015

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  • 9aAT-7 Production of metastable heavy ion beam using Stark effect in 2D resonant coherent excitation

    Azuma T., Nakano Y., Inoue K., Nakai Y., Komaki K., Takada E., Murakami T.

    Meeting abstracts of the Physical Society of Japan69 ( 2 ) 79 - 79   22 8 2014

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    Language：Japanese   Publisher：The Physical Society of Japan (JPS)  

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  • 29pCH-13 Formation of highly-excited states by a double resonance technique in resonant coherent excitation

    Inoue K., Nakano Y., Azuma T., Nakai Y., Hatakeyama A., Komaki K., Takada E., Murakami T.

    Meeting abstracts of the Physical Society of Japan69 ( 1 ) 211 - 211   5 3 2014

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    Language：Japanese   Publisher：The Physical Society of Japan (JPS)  

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  • Resonant Coherent Excitation of Hydrogenlike Fe25+ in a Ge crystal

    Y. Nakano, K. Inoue, C. Watanabe, T. Masunaga, A. Hatakeyama, Y. Nakai, K. Komaki, E. Takada, T. Murakami, T. Azuma

    XXVIII INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC AND ATOMIC COLLISIONS (ICPEAC)488   2014

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  • 28pED-9 Resonant coherent excitation of 460MeV/u Fe^<25+> in Ge crystal

    Inoue K., Nakano Y., Azuma T., Masunaga T., Watanabe C., Hatakeyama A., Nakai Y., Komaki K., Takada E., Murakami T.

    Meeting abstracts of the Physical Society of Japan68 ( 1 ) 231 - 231   26 3 2013

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    Language：Japanese   Publisher：The Physical Society of Japan (JPS)  

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  • 極低温静電型イオン蓄積リングの技術的詳細

    榎本嘉範, 中野祐司, 東俊行

    原子衝突学会年会講演概要集38th   2013

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  • 極低温イオン蓄積リングの入射ビームライン開発及び中性ビーム合流計画

    中野祐司, 榎本嘉範, 東俊行, 東俊行

    原子衝突学会年会講演概要集38th   2013

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  • 26pAB-13 Observation of anisotropy of Ly-α1, Ly-α2 X-rays emitted from hydrogen-like heavy ions using resonant coherent excitation

    Azuma T., Nakano Y., Nakai Y., Hatakeyama A., Komaki K., Takada E., Murakami T.

    Meeting abstracts of the Physical Society of Japan67 ( 1 ) 217 - 217   5 3 2012

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    Language：Japanese   Publisher：The Physical Society of Japan (JPS)  

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  • 極低温静電型イオン蓄積リングの開発

    榎本嘉範, 中野祐司, 東俊行

    日本物理学会講演概要集67 ( 2 )   2012

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  • 極低温静電型イオン蓄積リングの開発

    中野祐司, 榎本嘉範, 東俊行

    原子衝突学会年会講演概要集37th   2012

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  • 23aEA-11 Electron Emission from Fast Ions Associated with Resonant Coherent Excitation V

    Suda S., Nakano Y., Metoki K., Shindo T., Ohtsuki S., Morimoto W., Takahashi S., Takano Y., Hatakeyama A., Nakai Y., Azuma T., Komaki K., Takada, Murakami T.

    Meeting abstracts of the Physical Society of Japan66 ( 2 ) 166 - 166   24 8 2011

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  • 23aEA-10 High-resolution Spectroscopy of Li-like U^<89+> using Resonant Coherent Excitation II

    Nakano T., Suda S., Shindo T., Takano Y., Ananyeva A., Kanai Y., Ikeda T., Azuma T., Brauning H, Brauning-Demian A., Dauvergne D., Stohlker Th., Yamazaki Y.

    Meeting abstracts of the Physical Society of Japan66 ( 2 ) 166 - 166   24 8 2011

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  • 27pRB-10 Development of an ultra low-temperature electrostatic ion storage ring

    Morimoto W., Nakano Y., Azuma T.

    Meeting abstracts of the Physical Society of Japan66 ( 1 ) 214 - 214   3 3 2011

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  • 極低温静電イオン蓄積リングの開発 II-(b)

    森本航, 榎本嘉範, 中野祐司, 東俊行, 東俊行

    日本物理学会講演概要集66 ( 2 )   2011

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  • 極低温静電イオン蓄積リングの開発 II-(a)

    榎本嘉範, 中野祐司, 森本航, 東俊行, 東俊行

    日本物理学会講演概要集66 ( 2 )   2011

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  • 極低温静電型イオン蓄積リングの開発

    森本航, 中野祐司, 榎本嘉範, 東俊行, 東俊行

    原子衝突研究協会年会講演概要集36th   2011

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  • 22pTC-14 Electron Emission from Fast Ions Associated with Resonant Coherent Excitation III

    Suda S., Nakano Y., Metoki K., Shindo T., Ohtsuki S., Takano Y., Hatakeyama A., Nakai Y., Azuma T., Komaki K., Yamazaki Y., Takada E., Murakami T.

    Meeting abstracts of the Physical Society of Japan65 ( 1 ) 204 - 204   1 3 2010

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  • 22pTC-15 Intra-shell transition of Li-like uranium by resonant coherent excitation

    Takano Y., Nakano Y., Brauning-Demian A., Kanai Y., Brauning H., Azuma T., Ikeda T., Suda S., Shindo T., Dauvergne D., Schuch R., Stohlker Th., Yamazaki Y.

    Meeting abstracts of the Physical Society of Japan65 ( 1 ) 204 - 204   1 3 2010

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  • ３次元コヒーレント共鳴励起を用いた Ｘ線-VUV領域の２重共鳴と磁気サブレベルコントロール Invited Peer-reviewed

    中野祐司

    原子衝突学会誌7 ( 5 ) 5 - 5   2010

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  • {周期場を使ったX線領域の原子状態制御} Invited Peer-reviewed

    中野祐司, 東俊行

    日本物理学会誌65 ( 7 ) 516 - 516   2010

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  • Double K-shell excitation of He-like Ar16+ and Li-like Ar15+ ions using periodic crystal fields

    Y. Nakano, K. Metoki, T. Azuma, A. Hatakeyama, Y. Nakai, Y. Takano, K. Komaki, Y. Yamazaki, E. Takada, T. Murakami

    Journal of Physics: Conference Series194 ( 13 )   24 12 2009

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    Language：English   Publisher：Institute of Physics Publishing  

    DOI： 10.1088/1742-6596/194/13/132042

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  • Initial state dependence of convoy electrons emitted from the excited ions by resonant coherent excitation

    T. Azuma, Y. Nakano, K. Metoki, A. Hatakeyama, Y. Nakai, K. Komaki, Y. Yamazaki, E. Takada, T. Murakami

    Journal of Physics: Conference Series194 ( 13 )   24 12 2009

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    DOI： 10.1088/1742-6596/194/13/132034

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  • 27aZB-1 Electron Emission from Fast Ions associated with Resonant Coherent Excitation I

    Suda S., Nakano Y., Metoki K., Azuma T., Takano Y., Hatakeyama A., Komaki K., Nakai Y., Yamazaki Y., Takada E., Murakami T.

    Meeting abstracts of the Physical Society of Japan64 ( 2 ) 83 - 83   18 8 2009

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  • 27aZB-2 Electron Emission from Fast Ions after Resonant Coherent Excitation II

    Nakano Y., Metoki K., Suda S., Azuma T., Takano Y., Hatakeyama A., Komaki K., Nakai Y., Yamazaki Y., Takada E., Murakami T.

    Meeting abstracts of the Physical Society of Japan64 ( 2 ) 83 - 83   18 8 2009

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  • 28aSK-5 Observation of 3-dimensional Resonant Coherent Excitation through Convoy Electron Emission

    Metoki K., Nakano Y., Terada M., Takano Y., Hatakeyama A., Nakai Y., Azuma T., Komaki K., Yamazaki Y., Takada E., Murakami T.

    Meeting abstracts of the Physical Society of Japan64 ( 1 ) 153 - 153   3 3 2009

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  • 23aZF-8 Double resonance spectroscopy of Fe^<24+> by 3D-RCE

    Metoki K., Nakano Y., Takano Y., Hatakeyama A., Nakai Y., Azuma T., Komaki K., Yamazaki Y., Takada E., Murakami T.

    Meeting abstracts of the Physical Society of Japan63 ( 2 ) 150 - 150   25 8 2008

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  • 23aZF-9 High resolution spectroscopy of Li-like uranium by resonant coherent excitation

    Takano Y., Nakano Y., Metoki K., Ikeda T., Kanai Y., Azuma T., Dauvergne D., Schuch R., Brauning H., Stohlker Th., Yamazaki Y.

    Meeting abstracts of the Physical Society of Japan63 ( 2 ) 150 - 150   25 8 2008

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  • 23pRA-3 Hollow atoms produced through resonant coherent excitation

    Nakano Y., Metoki K., Inoue T., Azuma T., Takano Y., Hatakeyama A., Komaki K., Nakai Y., Yamazaki Y., Takada E., Murakami T.

    Meeting abstracts of the Physical Society of Japan63 ( 1 ) 152 - 152   29 2 2008

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  • 23aRB-8 Observation of 3-dimensional Resonant Coherent Excitation using a variety of arrays of crystal planes

    Azuma T., Metoki K., Inoue T., Nakano Y., Takano Y., Hatakeyamae A., Komaki K., Nakai Y., Yamazaki Y., Takada E., Murakami T.

    Meeting abstracts of the Physical Society of Japan63 ( 1 ) 145 - 145   29 2 2008

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  • 21aXH-1 3D resonant coherent excitation by a crystal field III

    Nakano Y., Kondo C., Azuma T., Hatakeyama A., Komaki K., Nakai Y., Yamazaki Y., Takada E., Murakami T.

    Meeting abstracts of the Physical Society of Japan62 ( 1 ) 165 - 165   28 2 2007

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  • 26pWD-2 Resonant Coherent Excitation of Li-like Fe ions under Channeling Condition : Coincidence Measurement with Energy Deposit

    Nakai Y., Nakano Y., Ikeda T., Kanai Y., Kambara T., Fukunishi N., Kondo C., Azuma T., Komaki K., Yamazaki Y.

    Meeting abstracts of the Physical Society of Japan61 ( 2 ) 125 - 125   18 8 2006

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  • 25aRB-6 Observation of dressed state formation in a crystal

    Nakano Y., Kondo C., Azuma T., Hatakeyama A., Komaki K., Nakai Y., Yamazaki Y., Takada E., Murakami T.

    Meeting abstracts of the Physical Society of Japan61 ( 2 ) 109 - 109   18 8 2006

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  • 26pWD-1 Double resonance utilizing 3D resonant coherent excitation

    Azuma T., Nakano Y., Kondo C., Hatakeyama A., Komaki K., Nakai Y., Yamazaki Y., Takada E., Murakami T.

    Meeting abstracts of the Physical Society of Japan61 ( 2 ) 125 - 125   18 8 2006

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  • 30pXD-1 3D resonant coherent excitation of swift heavy ions by a crystal field

    Azuma T., Nakano Y., Kondo C., Hatakeyama A., Komaki K., Nakai Y., Yamazaki Y., Takada E., Murakami T.

    Meeting abstracts of the Physical Society of Japan61 ( 1 ) 964 - 964   4 3 2006

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  • 30aTB-11 3D resonant coherent excitation by a crystal field I

    Nakano Y., Ebisu K., Azuma T., Kondo C., Hatakeyama A., Komaki K., Nakai Y., Yamazaki Y., Takada E., Murakami T.

    Meeting abstracts of the Physical Society of Japan61 ( 1 ) 182 - 182   4 3 2006

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  • 25pYJ-4 3D Resonant Coherent Excitation in Non-Channeling Conditions I

    Nakano Yuji, Masugi S., Azuma T., Kondo C., Hatakeyama A., Komaki K., Yamazaki Y., Takada E., Murakami T.

    Meeting abstracts of the Physical Society of Japan60 ( 1 ) 160 - 160   4 3 2005

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  • 25pYJ-5 3D resonant coherent excitation in non-channeling conditions II

    Kondo C., Masugi S., Nakano Y., Azuma T., Hatakeyama A., Komaki K., Yamazaki Y., Takada E., Murakami K

    Meeting abstracts of the Physical Society of Japan60 ( 1 ) 161 - 161   4 3 2005

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  • 15pTE-2 Resonant coherent excitation of relativistic highly charged ions XII

    Azuma T, Muranaka T, Masugi S, Nakano Y, Kondo C, Hatakeyama A, Komaki K, Yamazaki Y, Takada E, Murakami T

    Meeting abstracts of the Physical Society of Japan59 ( 2 ) 140 - 140   25 8 2004

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  • 13aTG-6 Channeling of relativistic highly charged ions using ultra-thin crystals

    Masugi S, Nakano Y, Ishikawa A, Muranaka T, Azuma T, Kondo C, Hatakeyama A, Komaki K, Yamazaki Y, Takada E, Murakami T

    Meeting abstracts of the Physical Society of Japan59 ( 2 ) 106 - 106   25 8 2004

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  • 13aTG-7 Resonant Coherent Excitation of relativistic highly charged ions in ultra-thin crystal

    Kondo C, Masugi S, Nakano Y, Muranaka T, Azuma T, Hatakeyama A, Komaki K, Yamazaki Y, Takada E, Murakami K

    Meeting abstracts of the Physical Society of Japan59 ( 2 ) 107 - 107   25 8 2004

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Research Projects

  • Atomic physics using coherent resonance excitation of high energy heavy ions by crystal fields

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Fund for the Promotion of Joint International Research (Fostering Joint International Research (B)) 

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    10 2022 - 3 2026

    Grant number：22KK0037

    Grant amount：\19890000 （ Direct Cost: \15300000 、 Indirect Cost：\4590000 ）

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  • Experimental study of gas phase chemical reaction by advanced beam technologies

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research 

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    11 2020 - 3 2025

    Grant number：20H05848

    Grant amount：\229450000 （ Direct Cost: \176500000 、 Indirect Cost：\52950000 ）

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  • Next Generation Astrochemistry: Transformative Action Based on Understandings of Microscopic Chemical Processes

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research 

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    11 2020 - 3 2025

    Grant number：20H05844

    Grant amount：\92430000 （ Direct Cost: \71100000 、 Indirect Cost：\21330000 ）

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  • Nano-superfluidity study in a qunatum droplet beam

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research 

    Kuma Susumu

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    4 2020 - 3 2024

    Grant number：20H04464

    Grant amount：\17940000 （ Direct Cost: \13800000 、 Indirect Cost：\4140000 ）

    The purpose of this study is to explore the nanoscale superfluidity using helium droplets as a quantum droplet beam. We found that the nanoscale molecular hydrogen clusters shows the microscopic superfluid properties probed by spectroscopy of embedded molecules inside. Further studies which were performed to characterize the properties of the droplet beam showed that molecular ions produced in the droplets were found in metastable states, which are not the lowest energy states observed in the isolated gas phase.

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  • Innovative approach to the study of atomic and molecular dynamics using superconducting molecular sensors

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research 

    Okada Shinji

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    4 2018 - 3 2021

    Grant number：18H03714

    Grant type：Competitive

    We have established a new high-resolution mass spectrometry method for low-energy molecules using an array of superconducting transition-edge-sensor (TES) microcalorimeters as a superconducting "molecular" detector. The TES detector was successfully operated without thermal radiation windows in front of the superconducting sensors by introducing cylindrical thermal radiation shields and meshes cooled by a GM refrigerator. This enabled the world's first successful direct detection of neutral molecules and their mass measurement by a TES detector. Incorporating this system into a low-temperature electrostatic ion storage ring enables unparalleled atomic and molecular collision experiments. The merging collision experiments of stored ions and neutral molecules using the simultaneously developed neutral beam source are expected to make a great leap forward in the study of ion-molecule reactions in the low-temperature and dilute space environment.

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  • Low-temperature drift tube experiments on the photoisomerization of interstellar molecules

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research 

    NAKANO Yuji

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    6 2018 - 3 2020

    Grant number：18K18790

    Grant amount：\6370000 （ Direct Cost: \4900000 、 Indirect Cost：\1470000 ）

    We focused on the photoisomerization process driven by ultraviolet light in the vicinity of high-temperature astronomical objects. We aimed to clarify the mechanism that determines the abundance and ratio of molecular isomers in the interstellar space. To investigate the reaction dynamics experimentally, we have developed deep ultraviolet light with a wavelength of 100-200 nm using a laser-plasma light source, as well as a technique for separating isomers of molecular ions using ion mobility analysis. We succeeded in obtaining the deep ultraviolet light at a newly developed beamline and proceeded with spectral analysis using theoretical calculation by the atomic structure calculation code FAC. Regarding isomer separation, we attained the stable transfer of molecular ions into the analyzing tube used molecular ions produced at an electron-impact or an electrospray ion source.

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  • Low-temperature drift tube experiments on the photoisomerization of interstellar molecules

    Grants-in-Aid for Scientific Research 

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    4 2018 - 3 2019

    Grant type：Competitive

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  • Cryogenic storage-ring experiments on the formation of interstellar hydrocarbon molecules

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research 

    NAKANO Yuji

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    4 2017 - 3 2019

    Grant number：17H02993

    Authorship：Principal investigator  Grant type：Competitive

    The purpose of this study is to reproduce the low-energy ion-neutral collision process in the interstellar space in the cryogenic ion storage ring RICE and to experimentally investigate the reaction cross-section and branching ratio depending on the collision velocity and quantum state. We stored a molecular ion beam in the RICE and diagnosed their time evolution of internal state by laser spectroscopy. Besides, the newly developed optical cavity increased the neutralization efficiency of the negative ion beam by ten times. We have completed most of the experimental developments, are ready to carry out the ion-neutral merged-beam experiment.

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  • Interdisciplinary science explored by cryogenic electrostatic storage ring: from astrochemistry to radiation biology

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research 

    Toshiyuki Azuma

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    4 2014 - 3 2018

    Grant number：26220607

    Grant type：Competitive

    Using a cryogenic electrostatic ion storage ring device, it has become possible to accumulate atomic and molecular ions for a long period of 1000 seconds or more under an environment of extremely low temperature and high vacuum. By introducing a tunable UV laser to accumulated isolated molecular ions, we observed the detailed rotational and rotational spectra of them, which enabled us to explore cooling dynamics over a long period of time. We also succeeded in generating fast pulsed beams of large molecular and cluster ions for their accumulation, and neutral particles for collisions with accumulated ions.

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  • Real-time observation of radiative cooling of isolated molecular ions in RICE

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research 

    Yuji Nakano

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    4 2016 - 3 2017

    Grant number：16K13859

    Authorship：Principal investigator  Grant type：Competitive

    An in-ring predissociation spectroscopy of N2O+ molecular ions, A2Σ+←X2Π2/3 (000)-(200), has been carried out in the RIKEN Cryogenic Electrostatic ring (RICE). With the use of a dedicated detection system, rotational spectra of N2O+ were observed at different storage periods of from 250 microseconds to about 1 second. The real-time observation of rotational population distribution was successfully attained, and the change of rotational temperature was measured by comparing the experimental result to numerical simulations using the pgopher code.

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  • Laboratory experiments on the synthesis of interstellar C-H and O-H series molecules

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research 

    Yuji Nakano

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    4 2014 - 3 2016

    Grant number：26287141

    Authorship：Principal investigator  Grant type：Competitive

    A laboratory research on the interstellar ion-neutral reaction was carried out with the aid of a newly developed electrostatic ion storage ring. The RIKEN Cryogenic Electrostatic ring (RICE) was successfully commissioned for this experiment, and a neutral beam generation is being ready for injection to the RICE. The research will be expansively continued as an approved JSPS project 17H02993 (FY2017-2019).

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  • Low-energy ion-neutral collision by merged beam experiment

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research 

    Yuji Nakano

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    4 2011 - 3 2014

    Grant number：23740311

    Authorship：Principal investigator  Grant type：Competitive

    A new experimental development for low-energy ion-neutral reaction has been carried out. The research aims to study the ion-neutral reaction dynamics in upper atmosphere and interstellar spaces. The low-energy collision experiment will be realized by merging a molecular ion beam and neutral beam in a cryogenic ion storage ring RICE at RIKEN. The following apparatus/technique has been developed; 1. generation and transport of negative ion beam, 2. neutralization of the negative ion beam, and 3. injection and storage of moleclar ion beam in RICE. Before the final year, the project was finished and reconstructed to be another KAKENHI project.

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  • 高速中性粒子ビームを利用した超低速原子分子反応

    日本学術振興会  科学研究費助成事業 

    中野祐司

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    4 2010 - 3 2011

    Grant number：22840050

    Authorship：Principal investigator  Grant type：Competitive

    本研究では,低温原子分子反応の実験的観測を通した宇宙の分子進化過程の解明,及び超低エネルギー衝突における量子的な反応ダイナミクスの解明を目指して『高速中性粒子ビーム源』の開発を行っている.具体的には,一価の負イオンビームに対してレーザーを照射して光電子脱離を誘起し,中性粒子ビームを生成する計画を進行中である.
    平成23年度は研究計画の第2年目(最終年)となる予定であったが,本研究は4月27日をもって科学研究費補助金-若手研究(B)へ採択され,より発展した研究計画として引き継がれることとなった.本年度はセシウムスパッターイオン源から引き出した負イオンビームの輸送軌道シミュレーションを行うとともに,実際のイオンビームに光脱離用レーザー(Nd:YAGレーザー,波長532nm)を照射して中性ビームを生成し,ビームプロファイルの測定・最適化等を行う計画となっている.現在まで,軌道シミュレーション,及び負イオンビーム源,Nd:YAGレーザーの調整が終了しており,中性ビーム生成に向けた準備がほぼ整った状態である.このような基盤技術,設備の構築により,極低温領域における原子分子衝突実験の実現へ大きく前進した.

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  • 周期場を用いた光を使わないコヒーレント量子操作

    日本学術振興会  科学研究費助成事業 

    中野 祐司

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    2008 - 2009

    Grant number：08J10694

    Grant amount：\1200000 （ Direct Cost: \1200000 ）

    シリコン結晶などの固体の中では原子が規則的に並んでおり、結晶内には空間的な周期霞場が形成されている.このような結晶標的に入射された高速のイオンは,規則的に並んだ原子面を横切ることで周期的な振動電磁場を感じ,光励起と同様に,イオンの内部状態は共鳴的に励起される(コヒーレント共鳴励起:RCE).本研究は3次元コヒーレント共鳴励起による量子制御ダイナミクスの解明,および原子分光,寿命測定への応用を目標として掲げている.
    第2年度となる平成22年度は,新たなテクニックとなったコンボイ電子の観測を主柱としてこれまでの成果をより発展させることを目的とし,放医研のHIMACで60時間×4回の加速器実験を行なった.さらに,本研究の将来展望として見通していた,結晶場によるウランの精密分光に向けたテスト実験をドイツ,GSI(重イオン研究所)にて開始した.詳細は以下のとおりである.
    [1]オージェ電子の観測(放医研HIMAC,平成21年4月,7月)
    RCEによってAr16+イオンの二重励起状態を生成し,前方に放出される電子の運動量スペクトルを観測したところ,コンボイ電子の両側に2つのサブピークが観測された.これはそれぞれ前方,後方に2.3keVで放出されたオージェ電子とアサインでき,二重励起の生成を実験的に確証した.
    [2]アラインされたイオンのコンプトンプロファイルの観測(放医研HIMAC,平成21年9月,12月)
    RCEにおける偏光制御テクニック(Y.Nakano et al., Phys.Rev, Lett.102, 085502(2009).)を利用し,進行方向にアラインされたイオンから放出されるコンボイ電子の測定を試みた.理論で予測されている逆カスプ型の電子運動量スペクトルを実際に観測するために,50keV電子を検出するアバランシェ・フォトダイオード(APD)を利用したセットアップを新たに開発した.現在データを解析するとともに,ハンガリーの理論グループのシミュレーションと合わせた考察を行なっている.
    [3]ウランの精密分光(ドイツGSI,平成21年9月)
    最も重い安定元素であるウラン(原子番号92)の精密分光を目指し,ドイツ・GSIに新たな実験装置を立ち上げた.195MeV/uのLi様U^<89>イオンにおいて,1s^22s→1s^22p_<3/2>遷移のRCEを観測することに成功し,最新の結晶分光器と同等の分解能を出せることを実証した.今後,蓄積リングを利用した電子冷却等を活用することで更に精度が向上すると考えられ,次期加速器計画FAIRにおいても優れた成果が期待される.

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