Eur. Phys. J. A (2005) 24: 193-198
https://doi.org/10.1140/epja/i2004-10146-1

Original Article

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

^* e-mail: pedro@pedro.iem.csic.es

Received: 28 December 2004
Accepted: 21 March 2005
Published online: 12 April 2005

Abstract

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.