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Shell evolution towards doubly-magic 78Ni studied by the beta-gamma spectroscopy

Research Project

Project/Area Number 25800130
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionThe University of Tokyo

Principal Investigator

NIIKURA Megumi  東京大学, 理学(系)研究科(研究院), 助教 (50644720)

Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords実験原子核物理 / 原子核構造 / ベータ崩壊 / ガンマ線核分光
Outline of Final Research Achievements

Spectroscopic studies were carried out on neutron-rich Zn isotopes to explore the single-particle structure of the most neutron-rich doubly-magic nucleus, Ni-78. The experiment was performed at RI Beam Factory (RIBF) in RIKEN using two different method: beta-gamma spectroscopy and in-beam gamma-ray spectroscopy. Excited level schemes of Zn-79,80,81 were constructed for the first time. From the different selectivity of the decay/reaction, single-particle states are identified and the shell-evolution of this neutron-rich nuclei were discussed.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (11 results)

All 2014 2013

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (9 results)

  • [Journal Article] β-Decay Half-Lives of 76, 77Co, 79, 80Ni and 81Cu Experimental Indication of a Doubly Magic 78Ni2014

    • Author(s)
      Z.Y. Xu, S. Nishimura, G. Lorusso, F. Browne, P. Doornenbal, G. Gey, H.-S. Jung, Z. Li, M. Niikura, P.-A. Soderstrom, T. Sumikama, J. Taprogge, Zs. Vajta, H. Watanabe, J. Wu, A. Yagi, K. Yoshinaga, H. Baba, S. Franchoo, H. Nishibata 他
    • Journal Title

      Phys. Rev. Lett.

      Volume: 113 Issue: 3 Pages: 032505-032505

    • DOI

      10.1103/physrevlett.113.032505

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Systematic study of β-decay half-lives in the vicinity of 78Ni2013

    • Author(s)
      Z. Y. Xu et al.
    • Journal Title

      JPS Conf. proc

      Volume: 1

    • DOI

      10.7566/jpscp.1.013035

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] Structure of neutron- rich Zn isotope2014

    • Author(s)
      Megumi Niikura
    • Organizer
      APS-JPS Joint meeting (HAW14)
    • Place of Presentation
      Waikoloa, Hawaii (USA)
    • Year and Date
      2014-10-07 – 2014-10-11
    • Related Report
      2014 Annual Research Report
  • [Presentation] Neutron monopole drift towards 78Ni2014

    • Author(s)
      Megumi Niikura
    • Organizer
      3rd SUNFLOWER workshop
    • Place of Presentation
      the University of Tokyo, Tokyo, Japan
    • Year and Date
      2014-09-15 – 2014-09-16
    • Related Report
      2014 Annual Research Report
  • [Presentation] Study on neutron-rich Zn isotopes via β-γ spectroscopy2014

    • Author(s)
      Megumi Niikura
    • Organizer
      2nd ARIS Conference
    • Place of Presentation
      the University of Tokyo, Tokyo, Japan
    • Year and Date
      2014-06-01 – 2014-06-06
    • Related Report
      2014 Annual Research Report
  • [Presentation] Shell-evolution towards 78Ni2014

    • Author(s)
      Megumi Niikura
    • Organizer
      3rd EURICA workshop
    • Place of Presentation
      RIKEN Nishina Center, Wako, Saitama, Japan
    • Year and Date
      2014-04-10 – 2014-04-11
    • Related Report
      2014 Annual Research Report
  • [Presentation] beta-decay spectroscopy at RIBF2014

    • Author(s)
      新倉潤
    • Organizer
      7th SSRI workshop
    • Place of Presentation
      理化学研究所(埼玉県)
    • Related Report
      2013 Research-status Report
  • [Presentation] Study on neutron-rich Zn isotopes via beta-gamma spectroscopy2014

    • Author(s)
      M. Niikura
    • Organizer
      2nd ARIS conference
    • Place of Presentation
      東京大学(東京都)
    • Related Report
      2013 Research-status Report
  • [Presentation] Study of proton shell evolution towards 78Ni2013

    • Author(s)
      M. Niikura
    • Organizer
      SUNFLOWER workshop
    • Place of Presentation
      Darmstadt, Germany
    • Related Report
      2013 Research-status Report
  • [Presentation] Beta-decay spectroscopy in the vicinity of 78Ni2013

    • Author(s)
      M. Niikura
    • Organizer
      LIA symposium
    • Place of Presentation
      Paris, France
    • Related Report
      2013 Research-status Report
  • [Presentation] ベータガンマ核分光による中性子過剰な78Ni近傍核の構造研究2013

    • Author(s)
      新倉潤
    • Organizer
      日本物理学会 秋季大会
    • Place of Presentation
      高知大学(高知県)
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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