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

Research Project

Project/Area Number 18K18790
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 17:Earth and planetary science and related fields
Research InstitutionRikkyo University

Principal Investigator

NAKANO Yuji  立教大学, 理学部, 准教授 (20586036)

Co-Investigator(Kenkyū-buntansha) 高谷 一成  独立行政法人労働者健康安全機構労働安全衛生総合研究所, 作業環境研究グループ, 任期付研究員 (20804298)
植田 寛和  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力科学研究所 先端基礎研究センター, 任期付研究員 (20705248)
Project Period (FY) 2018-06-29 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Keywords光異性化 / レーザープラズマ / 深紫外光 / イオンモビリティ / 異性体 / 惑星状星雲 / 光電離領域 / イオン移動度 / 星間分子 / エレクトロスプレー / FAC
Outline of Final Research Achievements

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.

Academic Significance and Societal Importance of the Research Achievements

同組成で形が異なる分子(例えばHCOとHOC)は互いに異なった振る舞いを示すため、これらを区別することは重要である。近年宇宙観測においても深紫外光によって分子の光異性化が起こっていることが示唆されている。一方で異性体同士は質量が同じため通常の質量分析法で分離することはできない。本研究では、波長可変の深紫外光源と、異性体分離という2本立ての技術開発を実現したものであり、宇宙科学に限らず、物理、化学分野での実験研究を通じた学問的、社会的な貢献が期待できるものである。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (25 results)

All 2020 2019 2018 Other

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (21 results) (of which Int'l Joint Research: 7 results) Remarks (2 results)

  • [Journal Article] Comparison of isomeric C3H7O+ ion mobilities using fragment ions from 2-butanol and tert-butanol in He and Ne2020

    • Author(s)
      Takaya Kazunari、Hasegawa Yuya、Koizumi Tetsuo
    • Journal Title

      Chemical Physics Letters

      Volume: 739 Pages: 137045-137045

    • DOI

      10.1016/j.cplett.2019.137045

    • Related Report
      2019 Annual Research Report
  • [Journal Article] A cryogenic linear ion trap beamline for providing keV ion bunches2018

    • Author(s)
      Menk S.、Bertier P.、Enomoto Y.、Masunaga T.、Majima T.、Nakano Y.、Azuma T.
    • Journal Title

      Review of Scientific Instruments

      Volume: 89 Issue: 11 Pages: 113110-113110

    • DOI

      10.1063/1.5051044

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Rotational state distribution of molecularly chemisorbed H2 on Pd(210)2019

    • Author(s)
      H. Ueta, Y. Sasakwa, D. Ivanov, S. Ohno and K. Fukutani
    • Organizer
      21st International Vacuum Congress, Malm_
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Rotational-state distribution and ortho-para conversion of molecularly chemisorbed H2 on Pd(210)2019

    • Author(s)
      H. Ueta, Y. Sasakwa, D. Ivanov, S. Ohno, S. Ogura and K. Fukutani
    • Organizer
      4th International Workshop on Scattering of Atoms and Molecules from Surfaces, Madrid, Spain
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Pd(210)表面における分子状化学吸着水素の回転状態分布と核スピン転換2019

    • Author(s)
      植田寛和,笹川祐矢,Ivanov Dmitry,大野哲,小倉正平,福谷克之
    • Organizer
      日本表面真空学会学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Pd(210)表面における水素分子のオルト-パラ転換研究2019

    • Author(s)
      植田寛和,笹川祐矢,Ivanov Dmitry,大野哲,小倉正平,福谷克之
    • Organizer
      ハイドロジェノミクス研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Photodetachment of negative ion beams for the ion-neutral merged-beam experiments at RICE2019

    • Author(s)
      M Iizawa, S Iida, S Kuma, T Azuma and Y Nakano
    • Organizer
      RIKEN Summer School 2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] 合流ビーム実験に向けた中性ビーム源の開発 IV2019

    • Author(s)
      飯澤正登実,飯田進平,大阿久貴博,河上剛,東俊行,中野祐司
    • Organizer
      日本物理学会 第75回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 極低温静電型イオン蓄積リングRICE での分光実験に向けたCaH+イオンビームの生成2019

    • Author(s)
      木村直樹,廣田彩音,飯澤正登実,久間晋,田沼肇,城丸春夫,山口貴之,中野祐司,東俊行
    • Organizer
      日本物理学会 第75回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 低温移動度分析を用いた異性体分別技術の開発2019

    • Author(s)
      椎名陽子,江淵欣久,羽尾真礼,安原杏香,中野祐司
    • Organizer
      原子衝突学会第44回年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 低温移動度分析を用いた異性体分子の分別2019

    • Author(s)
      椎名陽子,中野祐司
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 合流ビーム実験に向けた中性ビーム源の開発 III2019

    • Author(s)
      飯澤正登実,飯田進平,大阿久貴博,河上剛,東俊行,中野祐司
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 合流ビーム実験に向けた中性ビーム源の開発2019

    • Author(s)
      大阿久貴博,河上剛,飯澤正登実,飯田進平,東俊行,中野祐司
    • Organizer
      原子衝突学会第44回年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Photodetachment of negative ion beams for the ion-neutral merged-beam experiments at RICE2019

    • Author(s)
      M Iizawa, S Iida, S Kuma, T Azuma and Y Nakano
    • Organizer
      31st International Conference on Photonic, Electronic, and Atomic Collisions
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of a cryogenic ion mobility spectrometer for an isomer-selected photoexcitation and reaction studies2019

    • Author(s)
      Yuji Nakano, Yoko Shiina, Kazunari Takaya,Hirokazu Ueta and Takato Hirayama
    • Organizer
      31st International Conference on Photonic, Electronic, and Atomic Collisions
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] An experimental study of the UV-induced photo-isomerization of interstellar molecules2018

    • Author(s)
      Yuji Nakano
    • Organizer
      International workshop on Interstellar Matter 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Status of the cryogenic ion storage ring RICE2018

    • Author(s)
      Y. Nakano,R Igosawa,S Iida,S Okada,M Lindly,S Menk,R. Nagaoka,T. Hashimoto,S. Yamada,T. Yamaguchi,S. Kuma,T Azuma
    • Organizer
      19th International Conference Physics of Highly Charged Ions
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] An experimental study of the gas-phase ion-neutral reaction by merged-beam collisions2018

    • Author(s)
      R. Nagaoka,S Iida,M. Iizawa,S. Kuma,T Azuma,Y. Nakano
    • Organizer
      International workshop on Interstellar Matter 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [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
    • Related Report
      2018 Research-status Report
  • [Presentation] 移動管とレーザープラズマ光源を使った星間分子の光異性化の研究2018

    • Author(s)
      根本 拓海,飯田 進平,高谷 一成,植田 寛和,平山 孝人,中野 祐司
    • Organizer
      第7回イオン移動度研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] 極低温静電型イオン蓄積リングRICEを用いたN2O+の輻射振動冷却2018

    • Author(s)
      伊五澤涼, 中野祐司, 久間晋, 東俊行, 山口貴之
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 合流ビーム実験に向けた中性ビーム源の開発 II2018

    • Author(s)
      飯澤正登実,飯田進平,小泉航,東俊行, 中野祐司
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Research-status Report
  • [Presentation] デュオプラズマトロンイオン源を用いた分子イオンビームの生成2018

    • Author(s)
      長岡諒祐, 小田中隼人, 濵島慶子, 飯澤正登実, 中野祐司
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Research-status Report
  • [Remarks] 研究室ウェブサイト

    • URL

      https://www2.rikkyo.ac.jp/web/nakano/

    • Related Report
      2019 Annual Research Report
  • [Remarks] 立教大学理学部 中野研究室

    • URL

      https://www2.rikkyo.ac.jp/web/nakano/

    • Related Report
      2018 Research-status Report

URL: 

Published: 2018-07-25   Modified: 2021-02-19  

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