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Electron scattering from unstable nucleus with 3-dimensional trajectory analysis

Research Project

Project/Area Number 17H04835
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionTohoku University

Principal Investigator

Tsukada Kyo  東北大学, 電子光理学研究センター, 助教 (10422073)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥25,740,000 (Direct Cost: ¥19,800,000、Indirect Cost: ¥5,940,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2018: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥19,630,000 (Direct Cost: ¥15,100,000、Indirect Cost: ¥4,530,000)
Keywords電子散乱 / 不安定核 / 原子核 / 不安定原子核 / 核構造
Outline of Final Research Achievements

By remodeling the forward detector of the electron spectrometer in the SCRIT electron scattering facility, it became possible to reconstruct the scattered electron trajectory three-dimensionally. Moreover, by using the three-dimensional drive type three-dimensional magnetic field measuring device manufactured in this research project, a magnetic field map in the spectrometer magnet was created and the momentum resolution of the spectrometer was improved. Furthermore, the performance of the spectrometer was evaluated from the width of the elastic scattering peak found in the momentum spectrum of the scattered electrons by using the newly manufactured carbon thin film target. In particular, we succeeded in separating and observing the peak of the first excited state (4.4 MeV) of carbon next to the elastic scattering peak. This is completely ready for the experiment with the coming unstable nuclear target.

Academic Significance and Societal Importance of the Research Achievements

電子散乱は物質の構造を調べる上で強力な手法である。これは原子核構造に対しても同様で、1950年代にその有用性が示されて以来、原子核の基本的な性質の多くが電子散乱によって明らかにされてきた。近年世界中で活発な研究が行われている、短寿命・不安定核の性質を電子散乱で調べることを可能にするのがSCRIT法である。本研究課題では、SCRIT実験にて使用する電子スペクトロメータを要求性能を満たすように改良・発展させるもので、ほぼ成功裏に完了した。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (15 results)

All 2020 2019 2018 2017

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (12 results) (of which Int'l Joint Research: 6 results,  Invited: 4 results)

  • [Journal Article] Electron scattering from 208Pb and 132Xe ions at the SCRIT facility2019

    • Author(s)
      Kyo Tsukada, Kousuke Adachi, Akitomo Enokizono, Takahiro Fujita, Masahiro Hara, Toshitada Hori, Mitsuki Hori, Shin-ichi Ichikawa, Keita Kasama, Kazuyoshi Kurita, Kazuki Namba, Tetsuya Ohnishi, Toshimi Suda, Tadaaki Tamae, Mamoru Togasaki, Masanori Wakasugi, Masamitsu Watanabe & Kouhei Yamada
    • Journal Title

      Hyperfine Interactions

      Volume: 102

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The SCRIT Electron Scattering Facility at RIKEN: The World's First Electron Femtoscope for Short-Lived Unstable Nuclei2018

    • Author(s)
      Enokizono A.、Ohnishi T.、Tsukada K.
    • Journal Title

      Nuclear Physics News

      Volume: 28 Issue: 2 Pages: 18-22

    • DOI

      10.1080/10619127.2018.1427951

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] First Elastic Electron Scattering from 132Xe at the SCRIT Facility2017

    • Author(s)
      K. Tsukada, A. Enokizono, T. Ohnishi, K. Adachi, T. Fujita, M. Hara, M. Hori, T. Hori, S. Ichikawa, K. Kurita, K. Matsuda, T. Suda, T. Tamae, M. Togasaki, M. Wakasugi, M. Watanabe, and K. Yamada
    • Journal Title

      Phys. Rev. Lett.

      Volume: 118 Issue: 26 Pages: 262501-262501

    • DOI

      10.1103/physrevlett.118.262501

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] 炭素標的を用いたSCRIT実験用電子スペクトロメータの性能評価2020

    • Author(s)
      塚田暁
    • Organizer
      日本物理学会第75回年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Present status and prospects of the SCRIT electron scattering facility2019

    • Author(s)
      K. Tsukada
    • Organizer
      The 9th International Symposium on Nuclear Symmetry Energy (NuSYM2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Present status of SCRIT electron scattering facility2019

    • Author(s)
      K. Tsukada
    • Organizer
      The 14th Asia-Pacific Physics Conference (APPC2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 電子・不安定核散乱実験用ドリフトチェンバーの開発と性能評価2019

    • Author(s)
      塚田暁、青柳泰平、笠間桂太、須田利美、高山祥汰、玉江忠明、南波和希、本多佑記、和宇慶ひかり、市川進一、大西哲也、榎園昭智、原雅弘、堀利匡、若杉昌徳、渡邉正満、栗田和好、佐藤蒼、中野萌絵
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] SCRIT実験に用いる電子スペクトロメーターの精密磁場測定2019

    • Author(s)
      和宇慶ひかり、青柳 泰平、笠間 桂太、須田 利美、髙山 祥汰、 玉江 忠明、塚田 暁、南波 和希、本多 佑記、市川 進一、榎園 昭智、大西 哲哉、原 雅弘、 堀 利匡、若杉 昌徳、渡邊 正満、栗田 和好、佐藤 蒼、中野 萌絵
    • Organizer
      日本物理学会第74回年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Present status of the SCRIT electron scattering facility2018

    • Author(s)
      K. Tsukada, Y. Honda, K. Kasama, K. Namba, T. Suda, S. Takayama, T. Tamae, K. Tsukada, H. Wauke, A. Enokizono, M. Hara, T. Hori, S. Ichikawa, T. Ohnishi, M. Wakasugi, M. Watanabe, K. Kurita, M. Nakano, S. Sato, R. Ogawara
    • Organizer
      fifth joint meeting of the Division of Nuclear Physics of the APS the JPS
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Present status of the electron scattering experiments at the SCRIT facility2018

    • Author(s)
      K. Tsukada for the SCRIT collaboration
    • Organizer
      ECT*研究会 “Probing exotic structure of short-lived nuclei by electron scattering”
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Electron scattering from 208Pb and 13Xe ions at the SCRIT facility2018

    • Author(s)
      K. Tsukada for the SCRIT collaboration
    • Organizer
      The 7th International Conference on Trapped Charged Particles and Fundamental Physics (TCP2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] The SCRIT electron scattering facility: Toward the world’s first study of unstable nuclei by electron scattering2018

    • Author(s)
      塚田暁
    • Organizer
      PRL60周年シンポジウム、日本物理学会2018年秋季大会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] SCRIT電子スぺクトロメーター性能向上に向けた飛程検出器の開発2018

    • Author(s)
      高山祥太、青柳泰平、笠間桂太、須田利美、玉江忠明、塚田暁、本多佑記
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] SCRIT実験:安定核標的による成果と今後2017

    • Author(s)
      塚田暁、市川進一、 内田信昭、榎園昭智、大西哲哉、笠間桂太、栗田和好、笹村薪之介、須田利美、玉江忠明、戸ケ崎衛、南波和希、原雅弘、堀利匡、堀充希、本多佑記、若杉昌徳、 渡邊正満
    • Organizer
      日本物理学会秋季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] First result from SCRIT electron scattering facility with 132Xe target2017

    • Author(s)
      K. Tsukada
    • Organizer
      The 10th International Conference on Nuclear Physics at Storage Rings
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2017-04-28   Modified: 2021-02-19  

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