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2013 Fiscal Year Final Research Report

New isotope production of neutron-deficient actinide nucleus with N =126

Research Project

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Project/Area Number 23740214
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionInstitute of Physical and Chemical Research (2012-2013)
Japan Atomic Energy Agency (2011)

Principal Investigator

WAKABAYASHI Yasuo  独立行政法人理化学研究所, 仁科加速器研究センター, 基礎科学特別研究員 (80447359)

Project Period (FY) 2011 – 2013
Keywords新同位体 / 核構造 / 核反応
Research Abstract

In this study to evaluate new region arrised from the stability of N = 126 closed shell, the production experiments of new isotopes with Z >= 92 and close to N = 126 shell closure were performed.
The experiments were carried out at RIKEN using RILAC and GARIS. We used fusion reactions to produce new isotopes. During the three year study period, the new transitions for 217(Z=92,N=125) were observed, and two new isotopes of 215U(Z=92,N=123) and 216U(Z=92,N=124) which were the most lightest uranium isotope were produced. These results are the first observation in the world.

  • Research Products

    (4 results)

All 2014 2013 2012

All Journal Article (3 results) (of which Peer Reviewed: 2 results) Presentation (1 results)

  • [Journal Article] New isotope candidates, ^<215>U and ^<216>U2014

    • Author(s)
      Y. Wakabayashi, K. Morimoto, D. Kaji, H. Haba, M. Takeyama, S. Yamaki, K. Tanaka, K. Nishio, M. Asai, M. Huang, J. Kanaya, M. Murakami, A. Yoneda, K. Fujita, Y. Narikiyo, T. Tanaka, S. Yamamoto, and K. Morita
    • Journal Title

      RIKEN Accelerator Progress Report

      Volume: (ページ未定(2014年発行予定)) Pages: 47

    • Peer Reviewed
  • [Journal Article] New α-decay transitions of ^<217>U2013

    • Author(s)
      Y. Wakabayashi, K. Nishio, S. Mitsuoka, K. Morita, K. Morimoto, D. Kaji, H. Haba, T. Sumita, A. Yoneda, and Y. Gono
    • Journal Title

      RIKEN Accelerator Progress Report

      Volume: 46 Pages: 3

    • URL

      http://www.nishina.riken.jp/researcher/APR/Document/ProgressReport_vol_46.pdf

  • [Journal Article] Attempt to synthesize a new neutron-deficient isotope, ^<216>U2012

    • Author(s)
      Y. Wakabayashi, K. Nishio, S. Mitsuoka, K. Morita, K. Morimoto, D. Kaji, H. Haba, T. Sumita, A. Yoneda, and Y. Gono
    • Journal Title

      RIKEN Accelerator Progress Report

      Volume: 45 Pages: 19

    • URL

      http://www.nishina.riken.jp/researcher/APR/Document/ProgressReport_vol_45.pdf

    • Peer Reviewed
  • [Presentation] 中性子魔法数126 領域の中性子欠損したアクチノイド原子核の新同位体合成2013

    • Author(s)
      若林泰生、西尾勝久、光岡真一、森本幸司、加治大哉、羽場宏光、西中一朗、牧井宏之、住田貴之、米田晃、森田浩介
    • Organizer
      日本物理学会2013年秋季大会
    • Place of Presentation
      高知大学
    • Year and Date
      2013-09-22

URL: 

Published: 2015-06-25  

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