Interatomic coulombic decay and its cascade in the many excited atoms

• Project/Area Number: 16K05016
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Quantum beam science
• Research Institution: Kyoto University
• Principal Investigator: Kiyonobu Nagaya 京都大学, 理学研究科, 助教 (30273436)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2016: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: 自由電子レーザー / クラスター / 原子間クーロン緩和

Outline of Final Research Achievements

We have studied the dynamics of collective decay of many excited atoms in the clusters/molecules. Clusters/molecules were irradiated by intense laser pulses to produce many excited atoms in the nano-scale space, and electronic and structural changes were traced by time-resolved spectroscopy. We constructed the experimental setup for pump-probe experiments using x-ray free electron laser (FEL) pulses to observe the electronic and structural change in the clusters and molecules with high temporal resolution. We have confirmed the ultrafast dynamics occurring within sub-pico second timescale after the irradiation of intense laser pulses. We revealed the importance of collective decay process for the understanding of the ultrafast dynamics triggered by intense lasers.

Academic Significance and Societal Importance of the Research Achievements

様々な高強度・短パルスレーザーの開発は、これを用いる研究の高度化にとどまらず、レーザー利用の日常化と技術革新を通して我々の生活に変化をもたらしてきた。物質への強力なレーザー照射によって引き起こされる過程は、物質の高励起状態が関わる複雑な過程であり、その素過程を理解することは新しい非平衡系物理の開拓という意味での基礎的科学として興味深いだけでなく、レーザー利用の高度化にもつながる重要な研究である。理論的な取扱が非自明あるいは困難な場合が現れるため、実験的な知見の蓄積が重要な役割を担っており、将来的には理論研究との協力により理解を深めることできる。

Research Products

• [Journal Article] Radiation-Induced Chemical Dynamics in Ar Clusters Exposed to Strong X-Ray Pulses (2018)
  • Author(s): Kumagai Yoshiaki、Jurek Zoltan、Xu Weiqing、Fukuzawa Hironobu、Motomura Koji、Iablonskyi Denys、Nagaya Kiyonobu, 他19名
  • Journal Title: Physical Review Letters Volume: 120 Issue: 22 Pages: 223201-223201
  • DOI: 10.1103/physrevlett.120.223201
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Following the Birth of a Nanoplasma Produced by an Ultrashort Hard-X-Ray Laser in Xenon Clusters (2018)
  • Author(s): Kumagai Yoshiaki, Fukuzawa Hironobu, Motomura Koji, Iablonskyi Denys, Nagaya Kiyonobu, Wada Shin-ichi, Ito Yuta, Takanashi Tsukasa, Sakakibara Yuta, Katayama Tetsuo, Togashi Tadashi, Tono Kensuke, Yabashi Makina, Golubev Nikolay V., Gokhberg Kirill, Cederbaum Lorenz S., Kuleff Alexander I., Ueda Kiyoshi (全34名)
  • Journal Title: Physical Review X Volume: 8 Issue: 3 Pages: 031034-031034
  • DOI: 10.1103/physrevx.8.031034
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Advances in instrumentation for gas-phase spectroscopy and diffraction with short-wavelength free electron lasers (2018)
  • Author(s): Fukuzawa Hironobu、Nagaya Kiyonobu、Ueda Kiyoshi
  • Journal Title: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Volume: 907 Pages: 116-131
  • DOI: 10.1016/j.nima.2018.03.017
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Ultrafast Coulomb explosion of a diiodomethane molecule induced by an X-ray free-electron laser pulse (2017)
  • Author(s): Tsukasa Takanashi, Kosuke Nakamura, Edwin Kukk, Koji Motomura, Hironobu Fukuzawa, Kiyonobu Nagaya, (他28名), Hirohiko Kono, Kiyoshi Ueda
  • Journal Title: Phys. Chem. Chem. Phys. Volume: 19 Issue: 30 Pages: 19707-19721
  • DOI: 10.1039/c7cp01669g
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Molecular Dynamics of XFEL-Induced Photo-Dissociation, Revealed by Ion-Ion Coincidence Measurements (2017)
  • Author(s): Edwin Kukk, Koji Motomura, Hironobu Fukuzawa, Kiyonobu Nagaya, and Kiyoshi Ueda
  • Journal Title: Applied Sciences Volume: 7 Issue: 5 Pages: 531-531
  • DOI: 10.3390/app7050531
  • NAID: 120006491843
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Time-Resolved Measurement of Interatomic Coulombic Decay Induced by Two-Photon Double Excitation of Ne2 (2017)
  • Author(s): T. Takanashi, N. V. Golubev, C. Callegari, H. Fukuzawa, K. Motomura, D. Iablonskyi, Y. Kumagai, S. Mondal, T. Tachibana, K. Nagaya, T. Nishiyama, K. Matsunami, P. Johnsson, P. Piseri, G. Sansone, A. Dubrouil, M. Reduzzi, P. Carpeggiani, C. Vozzi, M. Devetta, M. Negro et al.
  • Journal Title: Physical Review Letters Volume: 118 Issue: 3 Pages: 033202-033202
  • DOI: 10.1103/physrevlett.118.033202
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Slow Interatomic Coulombic Decay of Multiply Excited Neon Clusters (2016)
  • Author(s): D. Iablonskyi, K. Nagaya, H. Fukuzawa, K. Motomura, Y. Kumagai, S. Mondal, T. Tachibana, T. Takanashi, T. Nishiyama, K. Matsunami, P. Johnsson, P. Piseri, G. Sansone, A. Dubrouil, M. Reduzzi, P. Carpeggiani, C. Vozzi, M. Devetta, M. Negro, F. Calegari, A. Trabattoni, M. C. Castrovilli et al.
  • Journal Title: Physical Review Letters Volume: 117 Issue: 27 Pages: 276806-276806
  • DOI: 10.1103/physrevlett.117.276806
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] 5.Interatomic Coulombic Decay Cascades in Multiply Excited Neon Clusters (2016)
  • Author(s): K. Nagaya, D. Iablonskyi, N. V. Golubev, K. Matsunami, H. Fukuzawa, K. Motomura, T. Nishiyama, T. Sakai, T. Tachibana, S. Mondal, S. Wada, K. C. Prince, C. Callegari, C. Miron, N. Saito, M. Yabashi, Ph. V. Demekhin, L. S. Cederbaum, A. I. Kuleff, M. Yao and K. Ueda
  • Journal Title: Nat. Comm. Volume: 7 Issue: 1 Pages: 13477-13477
  • DOI: 10.1038/ncomms13477
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Femtosecond Charge and Molecular Dynamics of I-containing organic molecules Induced by Intense X-Ray Free-Electron Laser Pulses (2016)
  • Author(s): K.Nagaya, K.Motomura, E.Kukk, Y.Takahashi, K.Yamazaki, S.Ohmura, H.Fukuzawa, S.Wada, S.Mondal, T.Tachibana, Y.Ito, R.Koga, T.Sakai, K.Matsunami, K.Nakamura, M.Kanno, A.Rudenko, C.Nicolas, X-J.Liu, C.Miron, Y.Zhang, Y.Jiang, J.Chen, M.Anand, D.E.Kim, K.Tono, M.Yabashi, M.Yao, H.Kono, K.Ueda
  • Journal Title: Faraday Discussions Volume: 194 Pages: 537-562
  • DOI: 10.1039/c6fd00085a
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] 電子スペクトル計測による軟 X 線 FEL 誘起ナノプラズの生成・崩壊過程の観測 (2019)
  • Author(s): 仁王頭明伸、他26名
  • Organizer: 第32回放射光学会年会・放射光化学合同シンポジウム
• [Presentation] 軟X線FELを用いたXeクラスターの逐次イオン化によるナノプラズマ生成ダイナミクス (2019)
  • Author(s): 横野直道、他26名
  • Organizer: 日本物理学会2018年秋季大会
• [Presentation] 軟X線FELによるキセノンクラスターの多重イオン化におけるイオン化抑制とナノプラズマ生成 (2018)
  • Author(s): 仁王頭明伸、他26名
  • Organizer: 第31回放射光学会年会・放射光化学合同シンポジウム
• [Presentation] Tracing the laser induced ultrafast destruction of giant Xe clusters by time resolved x-ray diffraction measurements (2018)
  • Author(s): Kiyonobu Nagaya
  • Organizer: Conference on Laser Synchrotron Radiation Combination Experiment (LSC 2018)
  • Int'l Joint Research / Invited
• [Presentation] XFELを利用したXeクラスターの時分割X線回折 (2018)
  • Author(s): 仁王頭明伸，西山俊幸，（他30名），永谷清信，上田潔
  • Organizer: 第31回放射光学会年会・放射光化学合同シンポジウム
• [Presentation] 軟X線FELによるキセノンクラスターの多重イオン化におけるイオン化抑制とナノプラズマ生成 (2018)
  • Author(s): 仁王頭明伸，横野直道，西山俊幸，（他22名），永谷清信，上田潔
  • Organizer: 第31回放射光学会年会・放射光化学合同シンポジウム
• [Presentation] SACLAのシングルショットX線回折による単一Xeクラスターの形状解析 (2017)
  • Author(s): 西山俊幸
  • Organizer: 第30回放射光学会年会・放射光化学合同シンポジウム
  • Place of Presentation: 神戸芸術センター （兵庫県神戸市）
  • Year and Date: 2017-01-07
• [Presentation] Ultrafast dynamics of atomic clusters proved by XFEL (2017)
  • Author(s): Kiyonobu Nagaya
  • Organizer: 30th International Conference on Photonic Electronic and Atomic Collisions (ICPEAC XXX)
  • Int'l Joint Research / Invited
• [Presentation] Ultrafast structure change of laser induced nano-plasma traced by time-resolved x-ray diffraction (2017)
  • Author(s): Kiyonobu Nagaya
  • Organizer: 14th International Conference on Multiphoton processes
  • Int'l Joint Research / Invited
• [Presentation] Dynamics in XFEL induced nano-plasma (2017)
  • Author(s): Kiyonobu Nagaya
  • Organizer: Physical Chemistry Colloquium 2017@Sendai
  • Int'l Joint Research
• [Presentation] 時分割X線回折で探る巨大Xeクラスターの超高速構造変化 (2017)
  • Author(s): 西山俊幸，仁王頭明伸，（他30名），永谷清信，上田潔
  • Organizer: 第11回 分子科学討論会
• [Presentation] XFELを用いたXeクラスターの時分割X線回折 (2017)
  • Author(s): 西山俊幸，仁王頭明伸，（他30名），永谷清信，上田潔
  • Organizer: 日本物理学会2017年秋季大会
• [Presentation] Femtosecond time-resolved observation of nanoplasma formation at SACLA (2016)
  • Author(s): 永谷清信
  • Organizer: Satellite workshop of 5th Japanese-German University Presidents’ Conference
  • Place of Presentation: Karlsruhe Institute of Technology, Germany
  • Year and Date: 2016-09-29
  • Int'l Joint Research
• [Presentation] Ultrafast charge and nuclear dynamics of XFEL irradiated 5-iodouracil molecule studied by ion momentum spectroscopy combined with numerical simulations (2016)
  • Author(s): 永谷清信
  • Organizer: 39th International Conference on Vacuum Ultraviolet and X-ray Physics (VUVX2016)
  • Place of Presentation: ETH Zurich, Switzerland Paul Scherrer Institute Charlotte Heer
  • Year and Date: 2016-07-03
  • Int'l Joint Research
• [Presentation] Tracing of ultrafast dynamics of polyatomic molecules at SACLA (2016)
  • Author(s): 永谷清信
  • Organizer: HeKKSAGOn Pre-meeting in Heidelberg
  • Place of Presentation: Heidelberg University, Germany
  • Int'l Joint Research