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Study of the nuclear structure of 25O through charge-exchange reactions with an active target

Research Project

Project/Area Number 18F18795
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section外国
Review Section Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

櫻井 博儀  国立研究開発法人理化学研究所, 仁科加速器科学研究センター, センター長 (70251395)

Co-Investigator(Kenkyū-buntansha) MAUSS BENOIT  国立研究開発法人理化学研究所, 仁科加速器科学研究センター, 外国人特別研究員
Project Period (FY) 2018-11-09 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2020: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2019: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2018: ¥600,000 (Direct Cost: ¥600,000)
Keywords魔法数 / RIビーム / 放射性同位体 / 荷電交換反応 / Time projection chamber / アクティブ標的 / シリコン検出器 / タンデム加速器 / 不安定核 / 核構造 / active target / Time Projection Chamber / 欠損質量分光
Outline of Annual Research Achievements

原子核は、核子数が「魔法数」を満したとき安定化する。魔法数は核構造を統べる最も基本的な秩序である。近年の研究により、放射性同位体は地球上の長寿命核とは異なる魔法数に従うことがわかってきた。本研究では、新魔法数が作る新秩序を理解するために、新魔法数16に対応するギャップ・エネルギーを定量的に評価することを目指し、非束縛核25Oの共鳴状態を重陽子標的の荷電交換反応により探索する。荷電交換後の陽子を精度よく測定するために、Time Projection Chamber (TPC)という軌跡測定用ガス検出器を開発する。
19年度の研究開発において、TPCの有感領域を透過する高エネルギー重陽子を検出することが、検出効率を向上するうえで重要であることが明らかになった。2020年度は、この問題を解決するために、有感領域を透過する重陽子を検出するシリコン半導体検出器テレスコープを開発した。シリコン検出器テレスコープの設置治具、信号読み出しケーブル、真空フランジ等を設計・製作した。シリコン検出器テレスコープの性能評価を理化学研究所RIBFにおいて標準アルファ線源を用いて行った。当初2020年7月に九州大学タンデム加速器施設において、重陽子ビームを用いた性能評価実験を行う予定であったが、コロナ感染症拡大の影響により延期となり、任期中に終えることができなかった。本実験は、任期終了後の2021年1月に実施した。

Research Progress Status

令和2年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和2年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (19 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (2 results) Journal Article (8 results) (of which Int'l Joint Research: 8 results,  Open Access: 4 results,  Peer Reviewed: 4 results) Presentation (9 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results)

  • [Int'l Joint Research] 中国科学院(中国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] 中国科学院(中国)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Inelastic decays from the isobaric analog resonances in 97Zr2020

    • Author(s)
      R. Tsunoda, N. Imai, M. Dozono, S. Michimasa, N. Kitamura, B. Mauss, N. Shimiu, D. Suzuki, T. Teranishi
    • Journal Title

      CNS Annual Report

      Volume: 99 Pages: 7-8

    • Related Report
      2020 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Upgrade of the silicon telescope array TiNA or missing mass spectroscopy at OEDO2020

    • Author(s)
      B. Mauss, J.W. Hwang, D. Suzuki, N. Ma, N. Imai, M. Dozono, S. Michimasa, T. Sumikama, S. Ota, C. Iwamoto, N. Iwasa, and F. Endo
    • Journal Title

      CNS Annual Report

      Volume: 99 Pages: 13-14

    • Related Report
      2020 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Evaluation of ion backflow in active target CAT-M using high intensity beam2020

    • Author(s)
      E. Endo, S. Ota, B. Mauss, R. Kojima, K. Inaba, D. Suzuki, R. Tsunoda, S. Hayakawa, and Y. Hijikata
    • Journal Title

      CNS Annual Report

      Volume: 99 Pages: 49-50

    • Related Report
      2020 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Commissioning of the ACtive TARget and Time Projection Chamber (ACTAR TPC)2019

    • Author(s)
      Mauss B.、Morfouace P.、Roger T.、Pancin J.、Grinyer G.F.、 et al.
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

      Volume: 940 Pages: 498-504

    • DOI

      10.1016/j.nima.2019.06.067

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Validation of the energy-loss response of α particles in iC4H10 with ACTARSim2019

    • Author(s)
      Konczykowski P.、Fernandez-Dominguez B.、Alvarez-Pol H.、Caamano M.、Grinyer G.F.、Laffoley A.T.、Mauss B.、Pancin J.、Perez-Loureiro D.、Roger T.
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

      Volume: 927 Pages: 125-132

    • DOI

      10.1016/j.nima.2019.02.013

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] MICROMEGAS calibration for ACTAR TPC2018

    • Author(s)
      Mauss B.、Roger T.、Pancin J.、Damoy S.、Grinyer G. F.
    • Journal Title

      EPJ Web of Conferences

      Volume: 174 Pages: 01010-01010

    • DOI

      10.1051/epjconf/201817401010

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Demonstrator Detection System for the Active Target and Time Projection Chamber (ACTAR TPC) project2018

    • Author(s)
      Roger T.、Pancin J.、Grinyer G.F.、Mauss B.、 et al
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

      Volume: 895 Pages: 126-134

    • DOI

      10.1016/j.nima.2018.04.003

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Metal-core pad-plane development for ACTAR TPC2018

    • Author(s)
      Giovinazzo J.、Pibernat J.、Goigoux T.、de Oliveira R.、Grinyer G.F.、Huss C.、Mauss B.、Pancin J.、Pedroza J.L.、Rebii A.、Roger T.、Rosier P.、Saillant F.、Wittwer G.
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

      Volume: 892 Pages: 114-121

    • DOI

      10.1016/j.nima.2018.03.007

    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Search for alpha cluster states in 10B from resonant elastic scattering2021

    • Author(s)
      B. Mauss
    • Organizer
      International mini-workshop on "Physics in resonant reaction induced by low energy RI beam
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] The silicon telescope array TiNA for astrophysical reactions at the RIKEN2020

    • Author(s)
      B. Mauss, J.W. Hwang, D. Suzuki, N. Ma, M. Dozono, N. Imai, C. Iwamoto, N. Iwasa, S. Michimasa, S. Ota, T. Sumikama, T. Teranishi
    • Organizer
      日本物理学会秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Evaluation of ion back flow in active target CAT-M under high intensity heavy ion beam irradiation2020

    • Author(s)
      F. Endo, S. Ota, B. Mauss, R. Kojima, K. Inaba, D. Suzuki, R. Tsunoda, S. Hayakawa, Y. Hijikata
    • Organizer
      日本物理学会秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Ion back flow measurement for CAT-M using high intensity beam2020

    • Author(s)
      Fumitaka Endo, Benoit Mauss, et al.
    • Organizer
      The Physical Society of Japan 75th Annual meeting
    • Related Report
      2019 Annual Research Report
  • [Presentation] Proton elastic scattering of unstable nuclei 132Sn in inverse kinematics2020

    • Author(s)
      Tomoya Harada, Juzo Zenihiro, Benoit Mauss, et al.
    • Organizer
      The Physical Society of Japan 75th Annual meeting
    • Related Report
      2019 Annual Research Report
  • [Presentation] Experimental constrain on the nup-process reaction path2019

    • Author(s)
      Benoit Mauss
    • Organizer
      OEDO Collaboration Workshop
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] The TiNA array, development and status2019

    • Author(s)
      Benoit Mauss
    • Organizer
      The Physical Society of Japan Autumn Meeting
    • Related Report
      2019 Annual Research Report
  • [Presentation] The ACTAR TPC, commissioning, first experiments and perspectives2019

    • Author(s)
      Benoit Mauss
    • Organizer
      Workshop on RI-beam Spectroscopy by Innovative Gaseous Active Target
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Commissioning of the ACtive TARget and Time Projection Chamber (ACTAR TPC)2019

    • Author(s)
      B. Mauss
    • Organizer
      日本物理学会 第74回年次大会
    • Related Report
      2018 Annual Research Report

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Published: 2018-11-12   Modified: 2024-03-26  

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