Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2013, Vol. 24 ›› Issue (5): 050518 doi: 10.13538/j.1001-8042/nst.2013.05.018

Special Issue: Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2012)

• Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2012) • Previous Articles     Next Articles

New Geiger-Nuttall law of odd-Z nuclei and long-lived island beyond the stable line  

REN Yuejiao   REN Zhongzhou*     

  1. Department of Physics, Nanjing University, Nanjing 210093, China
  • Received:2013-06-27
  • Contact: REN Zhongzhou E-mail:zren@nju.edu.cn
  • Supported by:

    Supported by National Natural ScienceFoundation of China (NSFC) projects (Nos.11035001,11120101005 and 11175085) and the Priority AcademicDevelopment of Jiangsu Higher education Institutions.

     

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REN Yuejiao, REN Zhongzhou. New Geiger-Nuttall law of odd-Z nuclei and long-lived island beyond the stable line  .Nuclear Science and Techniques, 2013, 24(5): 050518     doi: 10.13538/j.1001-8042/nst.2013.05.018
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Abstract:

Recently, we analyze the α-decay data of even-Z nuclei and propose the new Geiger-Nuttall law where the effects of the quantum numbers of α-core relative motion are naturally embedded in the law [?Physical Review C 85, 044608 (2012)].In this paper, we firstly test whether the new law without any change of parameters can be applied to the α-decays of odd-Z nuclei which are more complicated than those of even-even nuclei. Then the nuclear shell effect around N=126 is analyzed for very proton-rich nuclei with Z=85–92 based on the data of α-decay energies and half-lives. A long-lived island beyond the stable line is proposed where the half-lives of nuclei on this island are abnormally long. The mechanism of the appearance of the island and its significance to other mass ranges are discussed.

Key words: New Geiger-Nuttall law, α-decay, Odd-Z nuclei, Long-lived island