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Shell model half-lives for r-process N = 82 nuclei

Authors
  • Cuenca-Garcıa, J.J.
  • Martınez-Pinedo, G.
  • Langanke, K.
  • Nowacki, F.
  • Borzov, I.N.
Publication Date
Jan 01, 2007
Source
HAL
Keywords
Language
English
License
Unknown
External links

Abstract

We have performed shell model calculations of the half-lives and neutron-branching probabilities of the r-process waiting-point nuclei at the magic neutron number N = 82. These new calculations use a larger model space than previous shell model studies and an improved residual interaction which is adjusted to recent spectroscopic data around A = 130. Our shell model results give a good account of all experimentally known half-lives and $Q_\beta^-$ values for the N = 82 r-process waiting-point nuclei. Our half-life predictions for the N = 82 nuclei with Z = 42-46 agree well with recent estimates based in the energy-density functional method.

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