759 articles – 7540 references  [version française]
HAL: in2p3-00744447, version 1

Detailed view  Export this paper
Physical Review C 86 (2012) 035805
Stellar electron-capture rates on nuclei based on a microscopic Skyrme functional
A. F. Fantina, E. Khan1, G. Colò, N. Paar, D. Vretenar

We compute electron-capture rates for 54,56Fe and Ge isotopes using a self-consistent microscopic approach. The single-nucleon basis and the occupation factors in the target nucleus are calculated in the finite-temperature Skyrme Hartree-Fock model, and the Jπ=0±, 1±, 2± charge-exchange transitions are determined in the finite-temperature random-phase approximation (RPA). The scheme is self-consistent; i.e., both the Hartree-Fock and the RPA equations are based on the same Skyrme functional. Several interactions are used in order to provide a theoretical uncertainty on the electron-capture rates for different astrophysical conditions. Comparing electron-capture rates obtained either with different Skyrme sets or with different available models indicates that differences up to one to two orders of magnitude can arise.
1:  IPNO - Institut de Physique Nucléaire d'Orsay
Physics/Astrophysics/Solar and Stellar Astrophysics

Sciences of the Universe/Astrophysics/Solar and Stellar Astrophysics

Physics/Nuclear Theory