Half-lives of rp-process waiting point nuclei
Instituto de Estructura de la Materia, Consejo Superior de Investigaciones Cientıficas, Serrano 123, E-28006, Madrid, Spain
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Accepted: 21 March 2005
Published online: 12 April 2005
We give results of microscopic calculations for the half-lives of various proton-rich nuclei in the mass region A = 60-90, which are involved in the astrophysical rp-process, and which are needed as input parameters of numerical simulations in Nuclear Astrophysics. The microscopic formalism consists of a deformed QRPA approach that involves a self-consistent quasiparticle deformed Skyrme Hartree-Fock basis and residual spin-isospin separable forces in both the particle-hole and particle-particle channels. The strength of the particle-hole residual interaction is chosen to be consistent with the Skyrme effective force and mean-field basis, while that of the particle-particle is globally fixed to κ = 0.07 MeV after a judicious choice from comparison to experimental half-lives. We study and discuss the sensitivity of the half-lives to deformation and residual interactions.
PACS: 21.60.Jz Hartree-Fock and random-phase approximations – / 23.40.Hc Relation with nuclear matrix elements and nuclear structure – / 26.30.+k Nucleosynthesis in novae, supernovae and other explosive environments –
© Società Italiana di Fisica and Springer-Verlag, 2005