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Lifetime measurements of highly charged radioactive ions in storage rings

Research Project

Project/Area Number 17H01123
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionSaitama University

Principal Investigator

Yamaguchi Takayuki  埼玉大学, 理工学研究科, 准教授 (10375595)

Co-Investigator(Kenkyū-buntansha) 山口 由高  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, 技師 (40415328)
洲嵜 ふみ  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, 研究職 (70779727)
長江 大輔  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, 協力研究員 (60455285)
Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥44,200,000 (Direct Cost: ¥34,000,000、Indirect Cost: ¥10,200,000)
Fiscal Year 2020: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2019: ¥14,560,000 (Direct Cost: ¥11,200,000、Indirect Cost: ¥3,360,000)
Fiscal Year 2018: ¥14,820,000 (Direct Cost: ¥11,400,000、Indirect Cost: ¥3,420,000)
Fiscal Year 2017: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
Keywords実験核物理 / 蓄積リング / 多価イオン / RIビーム
Outline of Final Research Achievements

This program aims at a new development which enables in-flight decay measurements of highly charged exotic ions, by exploiting recently built heavy-ion storage ring, Rare-RI Ring, at the RI Beam Factory in RIKEN. Major developments achieved so far are following: a compact high-sensitive Schottky detector which non-destructively detects single ions stored in the storage ring, a new beam circulation monitor which measures high-energy secondary electrons emitted from a thin foil, and a long scintillating fiber detector installed along the ring circumference for decaying daughter detection.

Academic Significance and Societal Importance of the Research Achievements

開発した検出器群によって、多価イオン状態で崩壊するエキゾチック原子核の寿命を飛行中に測定することができる。原子核の寿命は軌道電子の有無によって劇的に変化することがある(例えばγ崩壊と内部転換電子崩壊が競合する場合)。このような条件は星の中にあると考えられるため鉄からウランまでの重元素合成過程の理解に鍵となる情報となる。開発したショットキー検出器で短時間に単一粒子(親核)を非破壊的に測定し、蓄積リング周長に配置したファイバー検出器によって娘核を測定する。本研究のバックグラウンドがない効率的な測定は他の装置では不可能である。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (40 results)

All 2021 2020 2019 2018 2017 Other

All Int'l Joint Research (4 results) Journal Article (19 results) (of which Int'l Joint Research: 19 results,  Peer Reviewed: 19 results,  Open Access: 4 results) Presentation (17 results) (of which Int'l Joint Research: 7 results,  Invited: 8 results)

  • [Int'l Joint Research] GSI/Max-Planck Institute/Giessen Univ.(ドイツ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] IMP/Beihang Univ.(中国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] GSI/Max-Planck Institute/Giessen Univ(ドイツ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] IMP/Beihang Univ(中国)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Development and operation of a time-of-flight detector to confirm particle storage at the Rare-RI Ring2021

    • Author(s)
      D. Nagae et al.
    • Journal Title

      Nuclear Inst. and Methods in Physics Research, A

      Volume: 986 Pages: 164713-164713

    • DOI

      10.1016/j.nima.2020.164713

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Experimental Challenges of the First Mass Measurement Campaign at the Rare-RI Ring2020

    • Author(s)
      S. Naimi et al.
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 1643 Issue: 1 Pages: 012058-012058

    • DOI

      10.1088/1742-6596/1643/1/012058

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mass measurements for the Tz = -2 fp-shell nuclei 40Ti, 44Cr, 46Mn, 48Fe, 50Co, and 52Ni2020

    • Author(s)
      C. Y. Fu, Y. H. Zhang M. Wang, X. H. Zhou, Yu. A. Litvinov, K. Blaum, H. S. Xu, X. Xu, P. Shuai, Y. H. Lam, R. J. Chen, X. L. Yan, X. C. Chen, J. J. He, S. Kubono, M. Z. Sun, X. L. Tu, Y. M. Xing, Q. Zeng, X. Zhou, W. L. Zhan, S. Litvinov, G. Audi, T. Uesaka, T. Yamaguchi, A. Ozawa, B. H. Sun, Y. Sun, F. R. Xu,
    • Journal Title

      Phys. Rev. C

      Volume: 102 Issue: 5 Pages: 054311-054311

    • DOI

      10.1103/physrevc.102.054311

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Nuclear physics research at heavy ion accelerators: Precision studies with stored and cooled exotic nuclei2020

    • Author(s)
      Yu.A. Litvinov, Th. Stoehlker, X.W. Ma, Y.H. Zhang, T. Yamaguchi,
    • Journal Title

      J. Phys. Conf. Ser.

      Volume: 1401 Issue: 1 Pages: 012001-012001

    • DOI

      10.1088/1742-6596/1401/1/012001

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Efficiency and timing performance of time-of-flight detector utilizing thin foils and crossed static electric and magnetic fields for mass measurements with Rare-RI Ring facility2020

    • Author(s)
      S. Suzuki, A. Ozawa, D. Kamioka, Y. Abe, M. Amano, H. Arakawa, Z. Ge, K. Hiraishi, Y. Ichikawa, K. Inomata, A. Kitagawa, T. Kobayashi, Hg. Li, T. Matsumoto, T. Moriguchi, M. Mukai, D. Nagae, S. Naimi, S. Omika, S. Sato, Y. Tajiri, K. Wakayama, T. Yamaguchi
    • Journal Title

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

      Volume: 965 Pages: 163807-163807

    • DOI

      10.1016/j.nima.2020.163807

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Improving the resolving power of Isochronous Mass Spectrometry by employing an in-ring mechanical slit2020

    • Author(s)
      J.H. Liu, X. Xu, P. Zhang, P. Shuai, X.L. Yan, Y.H. Zhang, M. Wang, Yu.A. Litvinov, H.S. Xu, K. Blaum, et al.
    • Journal Title

      Nucl. Instrum. Methods Phys. Res. B

      Volume: 463 Pages: 138-142

    • DOI

      10.1016/j.nimb.2019.06.007

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Development of a new in-ring beam monitor in the Rare-RI Ring2019

    • Author(s)
      S. Omika, T. Yamaguchi, N. Tadano, Y. Abe, M. Amano, Z. Ge, D. Kamioka, T. Moriguchi, D. Nagae, S. Naimi, A. Ozawa, F. Suzaki, S. Suzuki, T. Suzuki, T. Uesaka, M. Wakasugi, K. Wakayama, Y. Yamaguchi
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

      Volume: 463 Pages: 241-243

    • DOI

      10.1016/j.nimb.2019.05.029

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Scheme of high-resolution identification and selection of secondary ions for mass measurements with the Rare-RI Ring2019

    • Author(s)
      Z. Ge, T. Uesaka, S. Naimi, D. Nagae, Y. Abe, S. Omika, F. Suzaki, T. Yamaguchi, Y. Yamaguchi, M. Wakusugi, H. Li, K. Wakayama, H. Arakawa, K. Inomata, K. Nishimuro, T. Kobayashi, A. Ozawa, S. Hosoi, Y. Inada, S. Suzuki, T. Moriguchi, M. Mukai, M. Amano, D. Kamioka, Y. Yano,
    • Journal Title

      Hyp. Int.

      Volume: 240 Issue: 1

    • DOI

      10.1007/s10751-019-1599-2

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Masses of ground and isomeric states of 101In and configuration-dependent shell evolution in odd-A indium isotopes2019

    • Author(s)
      X. Xu, J. H. Liu, C. X. Yuan, Y. M. Xing, M. Wang, Y. H. Zhang, X. H. Zhou, Yu. A. Litvinov, K. Blaum, R. J. Chen, et al.
    • Journal Title

      Phys. Rev. C

      Volume: 100 Issue: 5 Pages: 051303-051303

    • DOI

      10.1103/physrevc.100.051303

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The development of in-ring reaction measurements at the HIRFL-CSR2019

    • Author(s)
      J.T. Zhang, K. Yue, H.X. Li, X.L. Tu, C.J. Shao, P. Ma, B. Mei, X.C. Chen, Y.Y. Yang, X.Q. Liu, Y.M. Xing K.H. Fang, Z.Y. Sun, M. Wang Yu. A. Litvinov, T. Yamaguchi, P. Egelhof, Y.H. Zhang, X.H. Zhou,
    • Journal Title

      Nucl. Instrum. Methods Phys. Res. A

      Volume: 948 Pages: 162848-162848

    • DOI

      10.1016/j.nima.2019.162848

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] New test of modulated electron capture decay of hydrogen-like 142Pm ions: Precision measurement of purely exponential decay2019

    • Author(s)
      F.C. Ozturk, B. Akkus, D. Atanasov, H. Beyer, F. Bosch, D. Boutin, C. Brandau, P. Buehler, R.B. Cakirli, R.J. Chen, et al.
    • Journal Title

      Phys. Lett. B

      Volume: 797 Pages: 134800-134800

    • DOI

      10.1016/j.physletb.2019.134800

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Masses of neutron-rich 52-54Sc and 54,56Ti nuclides: The N = 32 subshell closure in scandium2019

    • Author(s)
      X. Xu, M. Wang, K. Blaum, J. D. Holt, Yu. A. Litvinov, A. Schwenk, J. Simonis, S. R. Stroberg, Y. H. Zhang, H. S. Xu, et l.
    • Journal Title

      Phys. Rev. C

      Volume: 99 Issue: 6 Pages: 064303-064303

    • DOI

      10.1103/physrevc.99.064303

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Mass measurements of neutron-deficient Y, Zr, and Nb isotopes and their impact on rp and νp nucleosynthesis processes2018

    • Author(s)
      Y.M. Xing, K.A. Li, Y.H. Zhang, X.H. Zhou, M. Wang, Yu.A. Litvinov, K. Blaum, S. Wanajo, S. Kubono, G. Martinez-Pinedo, et al.
    • Journal Title

      Phys. Lett. B

      Volume: 781 Pages: 358-363

    • DOI

      10.1016/j.physletb.2018.04.009

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Masses of the Tz = -3/2 nuclei 27P and 29S2018

    • Author(s)
      C. Y. Fu, Y. H. Zhang, X. H. Zhou, M. Wang, Yu. A. Litvinov, K. Blaum, H. S. Xu, X. Xu, P. Shuai, Y. H. Lam, et al.
    • Journal Title

      Phys. Rev. C

      Volume: 98 Issue: 1 Pages: 014315-014315

    • DOI

      10.1103/physrevc.98.014315

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Isochronous mass measurements of Tz = -1 fp-shell nuclei from projectile fragmentation of 58Ni2018

    • Author(s)
      Y. H. Zhang, P. Zhang, X. H. Zhou, M. Wang, Yu. A. Litvinov, H. S. Xu, X. Xu, P. Shuai, Y. H. Lam, R. J. Chen, et al.
    • Journal Title

      Phys. Rev. C

      Volume: 98 Issue: 1 Pages: 014319-014319

    • DOI

      10.1103/physrevc.98.014319

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Application of isochronous mass spectrometry for the study of angular momentum population in projectile fragmentation reactions2017

    • Author(s)
      X. L. Tu, A. Kelic-Heil, Yu. A. Litvinov, Zs. Podolyak, Y. H. Zhang, W. J. Huang, H. S. Xu, K. Blaum, F. Bosch, R. J. Chen, et al.
    • Journal Title

      Phys. Rev. C

      Volume: 95 Issue: 1 Pages: 014610-014610

    • DOI

      10.1103/physrevc.95.014610

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] High-precision QEC values of super allowed 0+ -> 0+ b-emitters 46Cr, 50Fe, and 54Ni2017

    • Author(s)
      P. Zhang, X. Xu, P. Shuai, R.J. Chen, X.L. Yan, Y.H. Zhang, M. Wang, Yu.A. Litvinov, K. Blaum, H.S. Xu, et al.
    • Journal Title

      Phys. Lett. B

      Volume: 767 Pages: 20-24

    • DOI

      10.1016/j.physletb.2017.01.039

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Nuclear-matter radius studies from 58Ni(α,α) experiments at the GSI Experimental Storage Ring with the EXL facility2017

    • Author(s)
      J. C. Zamora, T. Aumann, S. Bagchi, S. Boenig, M. Csatlos, I. Dillmann, C. Dimopoulou, P. Egelhof, V. Eremin, T. Furuno, et al.
    • Journal Title

      Phys. Rev. C

      Volume: 96 Issue: 3 Pages: 034617-034617

    • DOI

      10.1103/physrevc.96.034617

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Half-life measurement of short-lived 94mRu44+ using isochronous mass spectrometry2017

    • Author(s)
      Q. Zeng, M. Wang, X. H. Zhou, Y. H. Zhang, X. L. Tu, X. C. Chen, X. Xu, Yu. A. Litvinov, H. S. Xu, K. Blaum, et al.
    • Journal Title

      Phys. Rev. C

      Volume: 96 Issue: 3 Pages: 031303-031303

    • DOI

      10.1103/physrevc.96.031303

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 稀少RIリングのためのプラスチックシンチレータを用いた位置検出器の開発2020

    • Author(s)
      濱川大貴
    • Organizer
      日本物理学会2020年秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 稀少RIリングにおける周回周期の測定のためのデルタ線検出器の性能評価2020

    • Author(s)
      梶木大輔
    • Organizer
      日本物理学会2020年秋季大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] New experimental plan and detector R&D at the Rare-RI Ring facility2019

    • Author(s)
      T. Yamaguchi
    • Organizer
      China-Japan Collaboration Workshop on "Nuclear Mass and Life for Unraveling Mysteries of R-process”
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ILIMA status report and phase-0 program2019

    • Author(s)
      T. Yamaguchi
    • Organizer
      Nuster Week 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [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II2019

    • Author(s)
      廣田彩音
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 稀少RIリングのためのファイバーシンチレーション検出器の開発2019

    • Author(s)
      稲田康人
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 稀少RIリングのための薄膜を利用した位置検出器の開発2019

    • Author(s)
      細井駿
    • Organizer
      日本物理学会2019年秋季大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 極低温静電型イオン蓄積リングRICEによるN2O+の振動冷却測定2019

    • Author(s)
      廣田彩音
    • Organizer
      2019年原子衝突学会44回年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Status of RIKEN Ring2019

    • Author(s)
      T. Yamaguchi
    • Organizer
      NucAR collaboration meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Rare-RI Ring project in RIKEN and a proposal at CSRe2018

    • Author(s)
      T. Yamaguchi
    • Organizer
      Symposium on Precision Physics Experiments with Stored Highly Charged Ions at Low Energies
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Precision mass spectrometry of stored exotic nuclei2018

    • Author(s)
      T. Yamaguchi
    • Organizer
      重力波マルチメッセンジャー研究会「重力波観測時代のrプロセスと不安定核」
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 稀少RIリングを用いたウラン核分裂片の質量測定実験のデータ解析2018

    • Author(s)
      大甕舜一朗
    • Organizer
      日本物理学会第73回年次大会(東京理科大学野田キャンパス)
    • Related Report
      2017 Annual Research Report
  • [Presentation] Storage-ring mass spectrometry of exotic nuclei2017

    • Author(s)
      T. Yamaguchi
    • Organizer
      International symposium on RI beam physics in the 21st century: 10th anniversary of RIBF
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ILIMA project: isomeric beams, lifetimes and masses at the FAIR storage rings2017

    • Author(s)
      T. Yamaguchi
    • Organizer
      10th International Conference on Nuclear Physics at Storage Rings
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ILIMA status report2017

    • Author(s)
      T. Yamaguchi
    • Organizer
      NUSTAR week 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 稀少RIリングの質量測定の現状2017

    • Author(s)
      大甕舜一朗
    • Organizer
      日本物理学会2017年秋季大会(宇都宮大学峰キャンパス)
    • Related Report
      2017 Annual Research Report
  • [Presentation] Storage-ring mass spectrometry at GSI/FAIR2017

    • Author(s)
      山口貴之
    • Organizer
      日本物理学会2017年秋季大会(宇都宮大学峰キャンパス)
    • Related Report
      2017 Annual Research Report

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Published: 2017-04-28   Modified: 2022-01-27  

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