Follow-Ups on Great Achievements: New MRTOF-MS Projects at RIKEN-RIBF

ORAL

Abstract

The exotic isotopes of 249-253Md [1] and many other rare species like 210-214Ac/Ra [2] and intermediate-mass nuclei [3] and about 70 other isotopes have successfully been measured using a multi-reflection time-of-flight spectrograph (MRTOF-MS) at the super-heavy element (SHE)-mass facility of RIKEN-KEK [4]. After successful completion of the first SHE-Mass campaign, the setup has been redesigned for higher efficiencies. It has been relocated (with GARIS-II) to be behind the RRC accelerator with the new aim to measure the masses of 284Nh and 288Mc. Further MRTOF-MS devices are being developed to perform mass measurements of the most exotic species produced at RIKEN and will be placed in various locations as behind RIKEN's zero-degree spectrometer for symbiotic operation with other experiments. In this contribution, an overview of the future plans for low-energy precision mass measurements will be provided.

[1] Y. Ito et al., Phys. Rev. Lett. 120, 102501 (2018)
[2] M. Rosenbusch et al., Phys. Rev. C 97, 064306 (2018)
[3] S. Kimura et al., IJMS 430, 134 (2018)
[4] P. Schury et al., Nucl. Instr. Meth. B 335, 39 (2014)

*Japan Society for the Promotion of Science KAKENHI (Grants No. 2200823, No. 24224008, No. 24740142, No. 15H02096, No. 15K05116, 17H01081, and 17H06090)

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Presenters

  • Marco Rosenbusch

    • RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
    • RIKEN

Authors

  • Marco Rosenbusch

    • RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
    • RIKEN

  • Hiromitsu Haba

    • RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
    • RIKEN

  • Yoshikazu Hirayama

    • Wako Nuclear Science Center (WNSC), Institute of Particle and Nuclear Studies (IPNS), High Energy Accelerator Research Organization (KEK), Wako, Saitama 351-0198, Japan
    • KEK

  • Satoshi Ishizawa

    • RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
    • RIKEN

  • Y. Ito

    • Advanced Science Research Center, Japan Atomic Energy Agency, Ibaraki 319-1195, Japan
    • JAEA

  • Daiya Kaji

    • RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
    • RIKEN

  • S. Kimura

    • RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
    • RIKEN

  • H. Koura

    • Advanced Science Research Center, Japan Atomic Energy Agency, Ibaraki 319-1195, Japan

  • Hiroari Miyatake

    • Wako Nuclear Science Center (WNSC), Institute of Particle and Nuclear Studies (IPNS), High Energy Accelerator Research Organization (KEK), Wako, Saitama 351-0198, Japan
    • KEK

  • J. Y. Moon

    • Institute for Basic Science (IBS), 70, Yuseong-daero 1689-gil, Yusung-gu, Daejeon 305-811, Korea
    • RISP, IBS

  • Kouji Morimoto

    • RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
    • RIKEN

  • Shunji Nishimura

    • RIKEN
    • RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan

  • Toshitaka Niwase

    • RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
    • RIKEN
    • Kyushu University

  • Peter Schury

    • Wako Nuclear Science Center (WNSC), Institute of Particle and Nuclear Studies (IPNS), High Energy Accelerator Research Organization (KEK), Wako, Saitama 351-0198, Japan
    • KEK

  • Aiko Takamine

    • RIKEN Nishina Center
    • RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
    • RIKEN

  • Taiki Tanaka

    • RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
    • RIKEN

  • H. Ueno

    • RIKEN Nishina Center, RIKEN
    • RIKEN Nishina Center
    • RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan

  • Michiharu Wada

    • Wako Nuclear Science Center (WNSC), Institute of Particle and Nuclear Studies (IPNS), High Energy Accelerator Research Organization (KEK), Wako, Saitama 351-0198, Japan
    • KEK

  • Yutaka Watanabe

    • Wako Nuclear Science Center (WNSC), Institute of Particle and Nuclear Studies (IPNS), High Energy Accelerator Research Organization (KEK), Wako, Saitama 351-0198, Japan
    • KEK

  • Hermann Wollnik

    • New Mexico State University, Las Cruces, NM 88001, USA
    • New Mexico State University