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

• Project/Area Number: 16K13859
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Atomic/Molecular/Quantum electronics
• Research Institution: Rikkyo University (2017); Institute of Physical and Chemical Research (2016)
• Principal Investigator: NAKANO Yuji 立教大学, 理学部, 准教授 (20586036)
• Co-Investigator(Renkei-kenkyūsha): KUMA Susumu 理化学研究所, 東原子分子物理研究室, 研究員 (50600045)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: イオン蓄積リング / 輻射冷却 / 回転分光 / 前期解離 / 前期解離分光 / レーザー分光

Outline of Final Research Achievements

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.

Research Products

• [Journal Article] Design and commissioning of the RIKEN cryogenic electrostatic ring (RICE) (2016)
  • Author(s): Y. Nakano et al.
  • Journal Title: Review of Scientific Instruments Volume: 88 Issue: 3 Pages: 033110-033110
  • DOI: 10.1063/1.4978454
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] コヒーレント共鳴励起による多価イオンの精密分光 (2016)
  • Author(s): 中野祐司、東俊行
  • Journal Title: 原子衝突学会誌 しょうとつ Volume: 13 Pages: 117-125
  • Peer Reviewed
• [Presentation] 超伝導カロリメータを用いた低温下の星間分子計測実験(1) (2018)
  • Author(s): 山田真也, 岡田信二, 東俊行, 久間晋, 中野俊男, D.A. Bennett, W.B. Doriese, J.W.Fowler, J. Hays-Wehle, G. Hilton, G.C. O'Neil, C.D. Reintsema, D.R. Schmidt, D.S. Swetz, J.N. Ullom, 橋本直, 早川亮大, 一戸悠人, 石崎欣尚, 中野祐司, 竜野秀行, 野田博文, 上田周太朗
  • Organizer: 日本天文学会2018年春季年会
• [Presentation] 合流ビーム実験による低速イオン・中性衝突実験 (2018)
  • Author(s): 飯田進平，中野祐司
  • Organizer: 第7回イオン移動度研究会
• [Presentation] 合流ビーム実験に向けた中性ビーム源の開発 (2018)
  • Author(s): 飯田進平, 東俊行, 中野祐司
  • Organizer: 日本物理学会 第73回年次大会
• [Presentation] Development of RICE (2017)
  • Author(s): Yuji Nakano
  • Organizer: 7th International workshop on electrostatic storage devices
  • Int'l Joint Research / Invited
• [Presentation] Cryogenic ion storage ring RICE for atomic and molecular physics (2017)
  • Author(s): Yuji Nakano
  • Organizer: The 10th International Conference on Nuclear Physics at Storage Rings (STORI’17)
  • Int'l Joint Research / Invited
• [Presentation] Transition-edge-sensor microcalorimeters for mass spectrometric identification of neutral molecules (2017)
  • Author(s): S. Okada
  • Organizer: International workshop on low temperature detector (LTD17)
  • Int'l Joint Research
• [Presentation] Cryogenic detector for mass spectrometric identification of neutral molecules towards atomic and molecular collision experiments (2017)
  • Author(s): S. Okada
  • Organizer: International conference on exotic atoms and related topics (EXA2017)
  • Int'l Joint Research
• [Presentation] 極低温型イオン蓄積リングRICEを用いたN2O+の回転スペクトル測定 (2017)
  • Author(s): 伊五澤涼，山口貴之，中野祐司，久間晋，東俊行
  • Organizer: 原子衝突学会第42回年会
• [Presentation] 多素子超伝導遷移端マイクロカロリメータの中性分子質量分析応用 (2017)
  • Author(s): 岡田 信二, 東 俊行, D.A. Bennett, W.B. Doriese, J.W. Fowler, 橋本 直, 早川 亮大, J. Hays-Wehle, G. Hilton, 一戸 悠人, 石崎 欣尚, 久間 晋, 中野 俊男, 中野 祐司, 野田 博文, G.C. O’Neil, C.D. Reintsema, D.R. Schmidt, D.S. Swetz, 竜野 秀行, 上田 周太朗, J.N. Ullom, 山田 真也
  • Organizer: 原子衝突学会第42回年会
• [Presentation] 合流ビーム実験に向けた中性原子の開発 (2017)
  • Author(s): 飯田進平, 根本拓海, 菅沢卓也，林遼平，長岡諒祐，大森徹也，江淵欣久，中野祐司
  • Organizer: 原子衝突学会第42回年会
• [Presentation] Commissioning of a new cryogenic ion storage ring RICE (2017)
  • Author(s): Y. Nakano, Y. Enomoto, T. Masunaga, S. Menk, P. Bertier, and T. Azuma
  • Organizer: 30th International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC XXX)
  • Int'l Joint Research
• [Presentation] 極低温静電型イオン蓄積リングRICE中で輻射冷却されたN2O+の回転分光 (2017)
  • Author(s): 伊五澤涼, 山口貴之, 中野祐司, 久間晋, 東俊行
  • Organizer: 日本物理学会2017年秋季大会
• [Presentation] 分子検出に向けた多素子TESマイクロカロリメータの性能評価 (2017)
  • Author(s): 岡田信二, 東俊行, D.A. Bennett, W.B. Doriese, J.W. Fowler, 橋本直, 早川亮大, J. Hays-Wehle, G. Hilton, 一戸悠人, 石崎欣尚, 久間晋, 中野俊男, 中野祐司, 野田博文, G.C. O’Neil, C.D. Reintsema, D.R. Schmidt, D.S. Swetz, 竜野秀行, 上田周太朗, J.N. Ullom, 山田真也
  • Organizer: 日本物理学会2017年秋季大会
• [Presentation] イオン蓄積リングRICEにおける回転分光 (2017)
  • Author(s): 中野祐司、Matthew Lindley, 久間晋、東俊行
  • Organizer: 日本物理学会第72回年次大会
  • Place of Presentation: 大阪大学
• [Presentation] Recent results from the RIKEN electrostatic storage ring project (2016)
  • Author(s): Yuji Nakano
  • Organizer: International Workshop on Research Opportunities at Cryogenic Electrostatic Storage Rings
  • Place of Presentation: Heidelberg, Germany
  • Int'l Joint Research / Invited
• [Presentation] A laboratory experiment of interstellar molecular reactions at RIKEN Cryogenic Electrostatic ring (RICE) (2016)
  • Author(s): Yuji Nakano
  • Organizer: Workshop on interstelar matter 2016
  • Place of Presentation: 北海道大学 低温科学研究所
  • Int'l Joint Research
• [Presentation] イオン蓄積リングRICEにおけるN2O+イオンの回転分光 (2016)
  • Author(s): 中野祐司、Matthew Lindley, 久間晋、東俊行
  • Organizer: 原子衝突学会第41回年会
  • Place of Presentation: 富山大学
• [Presentation] Resonant coherent excitation of the “electron-cooled” U89+ beam from ESR (2016)
  • Author(s): Yuji Nakano,1 A. Bräuning-Demian,2 A. Ananyeva,2, 3 S. Menk,1 H. Bräuning,2 C. Kleffner,2 Th. Stöhlker,2, 4, 5 and T. Azuma1, 6
  • Organizer: 原子衝突学会第41回年会
  • Place of Presentation: 富山大学
• [Remarks] 立教大学理学部 中野研究室
  • URL: http://www2.rikkyo.ac.jp/web/nakano/