Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2009-09-16
Phys.Rev.C80:055801,2009
Physics
Nuclear Physics
Nuclear Theory
31 pages, 13 figures, submitted to Physical Review C
Scientific paper
10.1103/PhysRevC.80.055801
A fully self-consistent microscopic framework for evaluation of nuclear weak-interaction rates at finite temperature is introduced, based on Skyrme functionals. The single-nucleon basis and the corresponding thermal occupation factors of the initial nuclear state are determined in the finite-temperature Skyrme Hartree-Fock model, and charge-exchange transitions to excited states are computed using the finite-temperature RPA. Effective interactions are implemented self-consistently: both the finite-temperature single-nucleon Hartree-Fock equations and the matrix equations of RPA are based on the same Skyrme energy density functional. Using a representative set of Skyrme functionals, the model is applied in the calculation of stellar electron-capture cross sections for selected nuclei in the iron mass group and for neutron-rich Ge isotopes.
Colò Gianluca
Khan Elias
Paar Nils
Vretenar Dario
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