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Experimental verification of hyperfine interactions using highly charged ions in a low magnetic field

Research Project

Project/Area Number 22K13990
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Kimura Naoki  国立研究開発法人理化学研究所, 開拓研究本部, 研究員 (80846238)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywords多価イオン / 極低温静電型イオン蓄積リング / 超微細相互作用 / 超微細構造 / 超微細誘起遷移 / 孤立多価イオン / 極低温静電イオン蓄積リング / 準安定状態寿命 / 遷移確率 / 時間分解レーザー分光 / 準安定状態寿命測定 / 電子ビームイオントラップ / 疑似ゼーマンフリー分光 / プラズマアシストレーザー分光 / 静電型イオン蓄積 / 準安定状態
Outline of Research at the Start

電子と原子核の間の磁気的相互作用に起因する『超微細(構造)誘起遷移』は、原子-原子核の異なる階層間を繋ぐ興味深い研究対象である。
基礎的な物理現象であるにもかかわらず、その遷移寿命の実験値と理論計算には有意な差があることが複数の研究で報告されており、その原因は現状不明である。
本研究では、外部摂動、特に磁場による影響を排除したクリーンな環境下で、多価イオンの準安定状態寿命を測定し、超微細(構造)相互作用を研究する。

Outline of Final Research Achievements

We performed ion-beam storage experiments using the RIKEN cryogenic electrostatic ion-beam storage ring (RICE) toward experimental verification of the hyperfine interaction of highly charged ions. In the proof-of-principle experiment, we achieved the long-time storage (~1 sec) of the Ne-like Cl7+ ion beam. We also succeeded in observing extreme ultraviolet emissions from the stored ion beam.
In addition, we performed spectroscopic experiments for highly charged ions using a compact electron beam ion trap that can operate in a low magnetic-free field.

Academic Significance and Societal Importance of the Research Achievements

多価イオンは、相対性理論や量子電磁力学の影響を大きく受ける特異な原子である。その原子構造及びダイナミクスは、基礎物理を研究するための非常に良い題材として広く知られている。また近年、マルチメッセンジャー天文学、核融合プラズマ、短波長光源開発など、多種多様な応用用途が見つかり、その研究需要は尽きる気配が無い。多価イオンを空間捕捉する実験の先行研究を概観すると、多くの実験が磁場中に多価イオンを閉じ込める方式を取っている。多価イオンを磁場のない環境に長時間捕捉することに成功した本研究成果は、磁場中で観測が困難な準位構造やダイナミクスの研究に繋がり、大きな意義を持つ。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (30 results)

All 2024 2023 2022 Other

All Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 3 results) Presentation (22 results) (of which Int'l Joint Research: 9 results,  Invited: 7 results) Remarks (1 results)

  • [Journal Article] (第24回若手奨励賞受賞研究)新しい分光法の開拓を通じた多電子重元素多価イオンの原子構造とダイナミクスの研究2024

    • Author(s)
      木村 直樹
    • Journal Title

      Journal of Atomic Collision Research

      Volume: 21 Issue: 1 Pages: R002

    • DOI

      10.50847/collision.21.R002

    • ISSN
      2436-1070
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Injection of metallic elements into an electron-beam ion trap using an electron impact metal vapor source2023

    • Author(s)
      Kimura Naoki、Kiyama Genichi、Ito Daiki、Nakamura Nobuyuki
    • Journal Title

      Journal of Physics B: Atomic, Molecular and Optical Physics

      Volume: 56 Issue: 18 Pages: 185001-185001

    • DOI

      10.1088/1361-6455/acf354

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Anomalous plasma ionization balance induced by 5s and 4f metastable states2023

    • Author(s)
      Kimura Naoki、Priti、Numadate Naoki、Kodama Ryunosuke、Nakamura Nobuyuki
    • Journal Title

      Physical Review A

      Volume: 108 Issue: 3 Pages: 032818-032818

    • DOI

      10.1103/physreva.108.032818

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Simultaneous observation of noble gases and highly charged ions in an electron beam ion trap for accurate wavelength calibration of optical transitions2023

    • Author(s)
      Kimura Naoki、Nakamura Nobuyuki
    • Journal Title

      Journal of Physics B: Atomic, Molecular and Optical Physics

      Volume: 56 Issue: 22 Pages: 225001-225001

    • DOI

      10.1088/1361-6455/ad0400

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hyperfine-structure-resolved laser spectroscopy of many-electron highly charged ions2023

    • Author(s)
      Kimura Naoki、Priti、Kono Yasutaka、Pipatpakorn Pativate、Soutome Keigo、Numadate Naoki、Kuma Susumu、Azuma Toshiyuki、Nakamura Nobuyuki
    • Journal Title

      Communications Physics

      Volume: 6 Issue: 1 Pages: 8-8

    • DOI

      10.1038/s42005-023-01127-x

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Electric-quadrupole transition-rate measurement of a highly charged ion in an electron-beam ion trap using pulsed laser excitation from a metastable state2023

    • Author(s)
      Kimura Naoki、Priti、Kuma Susumu、Azuma Toshiyuki、Nakamura Nobuyuki
    • Journal Title

      Physical Review A

      Volume: 107 Issue: 2 Pages: 022805-022805

    • DOI

      10.1103/physreva.107.022805

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Photodetachment Spectroscopy of Highly Excited \(\text{C}_{2}^{ - }\) and Their Temporal Evolution in the Ion Storage Ring RICE2022

    • Author(s)
      Iizawa Masatomi、Kuma Susumu、Kimura Naoki、Chartkunchand Kiattichart、Harayama Sakumi、Azuma Toshiyuki、Nakano Yuji
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 91 Issue: 8 Pages: 084302-084302

    • DOI

      10.7566/jpsj.91.084302

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 5sおよび4f準安定状態が引き起こす特異なプラズマイオン化平衡2024

    • Author(s)
      木村直樹, Priti, 沼舘直樹, 児玉龍之介, 中村信行
    • Organizer
      日本物理学会2024年春季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Be様多価イオンAr14+の時間分解レーザー分光2024

    • Author(s)
      木村直樹, 宮由輝, 伊藤大貴, Priti, 加藤太治, 馬場正昭, 久間晋, 東俊行, 中村信行
    • Organizer
      日本物理学会2024年春季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Exploring hyperfine structures of many-electron ions using laser spectroscopy2023

    • Author(s)
      Priti, Naoki Kimura, Yasutaka Kono, Keigo Soutome, Pipatpakorn Pativate, Naoki Numadate, Susumu Kuma, Toshiyuki Azuma, Nobuyuki Nakamura
    • Organizer
      The 21st meeting on Atomic Processes in Plasmas
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Plasma-assisted laser spectroscopy of highly charged ions: Application of the study on collisional processes in a laboratory plasma2023

    • Author(s)
      Naoki Kimura
    • Organizer
      28th International Symposium on Ion-Atom Collisions (ISIAC 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Hyperfine-induced transition in highly charged Ne-like ions studied with the cryogenic electrostatic ion storage ring RICE2023

    • Author(s)
      Naoki Kimura, Sakumi Harayama, Chartkunchand Kiattichar, Susumu Kuma, Yuji Nakano, Toshiyuki Azuma
    • Organizer
      XXXIII International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Continuous injection of metallic elements into an electron-beam ion trap using an electron-beam evaporator2023

    • Author(s)
      Naoki Kimura, Genichi Kiyama, Daiki Ito, Nobuyuki Nakamura
    • Organizer
      XXXIII International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Observation of radiative vibrational cooling of N2O+ ions using a cryogenic electrostatic ion storage ring: contribution of Fermi resonance2023

    • Author(s)
      Sakumi Harayama, S. Kuma, N. Kimura, K. C. Chartkunchand, Y. Nakano, T. Yamaguchi, T. Azuma
    • Organizer
      XXXIII International Conference on Photonic, Electronic and Atomic Collisions (ICPEAC2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [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 VII2023

    • Author(s)
      原山朔弥, 木村直樹, 久間晋, Kiattichart Chartkunchand, 馬場正昭, 山口貴之, 中野祐司, 東俊行
    • Organizer
      日本物理学会第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 極低温静電型イオン蓄積リングRICEを用いたNe様多価イオンの超微細誘起遷移の研究2023

    • Author(s)
      木村直樹, 原山朔弥, Kiattichart Chartkunchand, 久間晋, 中野祐司, 東俊行
    • Organizer
      日本物理学会第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Hyperfine interaction of highly charged ions studied with magnetic-field-free ion storage devices2023

    • Author(s)
      Naoki Kimura
    • Organizer
      International Conference on Hyperfine Interactions and their Applications (HYPERFINE2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 新しい分光法の開拓を通じた 多電子重元素多価イオンの原子構造とダイナミクスの研究2023

    • Author(s)
      木村直樹
    • Organizer
      原子衝突学会第48回年会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Be様多価イオンAr14+のプラズマアシストレーザー分光2023

    • Author(s)
      宮由輝, 木村直樹, 伊藤大貴, Priti, 馬場正昭, 久間晋, 東俊行, 中村信行
    • Organizer
      原子衝突学会第48回年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 極低温イオン蓄積リングを用いた直線3原子分子イオンN2O+のフェルミ共鳴準位を介する輻射振動冷却過程の測定II2023

    • Author(s)
      原山朔弥, 木村直樹, 久間晋, Kiattichart Chartkunchand, 馬場正昭, 山口貴之, 中野祐司, 東 俊行
    • Organizer
      原子衝突学会第48回年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 真空紫外域におけるタングステン多価イオン発光線の探索2023

    • Author(s)
      伊藤大貴, 稲留康太, 木村直樹, Priti, 中村 信行
    • Organizer
      原子衝突学会第48回年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] プラズマアシストレーザー分光を用いた電気四重極遷移の寿命測定2023

    • Author(s)
      木村直樹、Priti、久間晋、東俊行、中村信行
    • Organizer
      日本物理学会2023年春季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Hyperfine-structure-resolved laser spectroscopy of highly charged ions in a compact EBIT2022

    • Author(s)
      Naoki Kimura
    • Organizer
      The 14th International Symposium on Electron Beam Ion Sources and Traps (EBIST2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Lifetime measurement of the microsecond-order electric-quadrupole transition: Application of plasma-assisted laser spectroscopy2022

    • Author(s)
      Naoki Kimura, Priti, Susumu Kuma, Toshiyuki Azuma, Nobuyuki Nakamura
    • Organizer
      20th International Conference on the Physics of Highly Charged Ions (HCI2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Naoki Kimura, Genichi Kiyama, Priti, Michiharu Wada, Toshiyuki Azuma, Nobuyuki Nakamura2022

    • Author(s)
      Hyperfine splitting of the clock candidate transition in 93Nb10+
    • Organizer
      20th International Conference on the Physics of Highly Charged Ions (HCI2022)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 多電子多価イオン超微細相互作用の実験研究~どう観るか?なぜ観るか?~2022

    • Author(s)
      木村直樹、Priti、久間晋、東俊行、中村信行
    • Organizer
      原子衝突学会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 電子衝撃加熱蒸着源による 電子ビームイオントラップへの金属試料導入2022

    • Author(s)
      木山 源一、木村 直樹、伊藤 大貴、池田大和、緒方海都、東俊行、中村 信行
    • Organizer
      原子衝突学会
    • Related Report
      2022 Research-status Report
  • [Presentation] Nb多価イオンの高分解能可視分光2022

    • Author(s)
      木村直樹、木山源一、Priti、和田道治、東俊行、中村信行
    • Organizer
      日本物理学会2022年秋季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] プラズマアシストレーザー分光を用いた多電子多価イオンの構造研究2022

    • Author(s)
      木村直樹、Priti、久間晋、東俊行、中村信行
    • Organizer
      核融合科学研究所「原子分子過程研究の最先端と先進的プラズマ分光計測」研究会
    • Related Report
      2022 Research-status Report
  • [Remarks] 多価イオンの新分光法を実証-多電子重元素多価イオンの超微細構造を観測-

    • URL

      https://www.riken.jp/press/2023/20230124_1/index.html

    • Related Report
      2022 Research-status Report

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Published: 2022-04-19   Modified: 2025-01-30  

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