Alpha-decay Half-lives and Fission Barriers for Superheavy Nuclei Predicted by a Nuclear Mass Formula

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We estimate &amp;amp;amp;amp;alpha;-decay half-lives from Q<SUB>&amp;amp;amp;amp;alpha;</SUB> values with phenomenological formulas. The parameter values of the formulas are adjusted by using experimental half-lives and Q values of the Evaluated Nuclear Structure Data File (ENSDF) for a wide nuclidic region. The half-lives T<SUB>&amp;amp;amp;amp;alpha;</SUB> for unknown nuclei are estimated by this phenomenological formula with the use of Q<SUB>&amp;amp;amp;amp;alpha;</SUB> values taken from KUTY mass formula. In addition to the half-lives, we estimate spontaneous fission barriers calculated by the method to obtain the shell energies of KUTY formula. In the superheavy region, the barrier heights of the nuclei near the nucleus <SUP>304</SUP> 122 are about 8 MeV and their widths are fairly wide. Therefore these spontaneous-fission half-lives are expected to be very long. On the other hand, there are some neutron-deficient nuclei whose spontaneous-fission half-lives expected to be rather short because their fission barrier heights are small and the widths of them are narrow.

収録刊行物

  • Journal of Nuclear and Radiochemical Sciences

    Journal of Nuclear and Radiochemical Sciences 3(1), 201-203, 2002-06-01

    日本放射化学会

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各種コード

  • NII論文ID(NAID)
    10013978649
  • NII書誌ID(NCID)
    AA11948402
  • 本文言語コード
    ENG
  • 資料種別
    REV
  • ISSN
    13454749
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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