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

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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Contributor : Béatrice Forrler <>
Submitted on : Tuesday, October 23, 2007 - 3:29:17 PM
Last modification on : Friday, May 8, 2020 - 1:10:32 AM

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J.J. Cuenca-Garcıa, G. Martınez-Pinedo, K. Langanke, F. Nowacki, I.N. Borzov. Shell model half-lives for r-process N = 82 nuclei. European Physical Journal A, EDP Sciences, 2007, 34, pp.99-105. ⟨10.1140/epja/i2007-10477-3⟩. ⟨in2p3-00181355⟩



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