Calculation of stellar electron-capture cross sections on nuclei based on microscopic Skyrme functionals (CROSBI ID 157162)
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Podaci o odgovornosti
Paar, Nils ; Colo, Gianluca ; Khan, Elias ; Vretenar, Dario
engleski
Calculation of stellar electron-capture cross sections on nuclei based on microscopic Skyrme functionals
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 tested in the calculation of stellar electron-capture cross sections for selected nuclei in the iron mass group and for neutron-rich Ge isotopes.
weak interaction; electron capture; supernova
projekt UKF 17/08
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nije evidentirano
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