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Alpha decays of neutron deficient isotopes in the region N [<GREATER-THAN OR EQUIVALENT TO>] 82 [<GREATER-THAN OR EQUIVALENT TO>] Z

  • Buck, B.
  • Merchant, A.C.
  • Perez, S.M.
Publication Date
Oct 01, 1996
DOI: 10.1103/PhysRevC.54.2063
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We compare α-decay half-life calculations, using parameter values unchanged from previous work, with 88 recent measurements of neutron deficient isotopes in the region N≳82≳Z. The results generally reproduce the data to within a factor of 3 or better. Exceptions to this statement occur for decays which do not proceed by s-wave transitions, and also where no α-branching ratio has been measured. In the former cases we calculate the L values for the transitions needed to bring their half-lives into agreement with the experimental values, and for the latter we predict branching ratio values based on the mismatches between the calculated α half-lives and the measured total half-lives. Amongst the 88 reported decays there are no cases which cannot be accommodated satisfactorily within this framework. For completeness we also calculate proton emission half-lives and find excellent agreement with the two observations in Ta156 reported in the same experimental survey. © 1996 The American Physical Society.

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