The Skyrme-TQRPA calculations of electron capture on hot nuclei in pre-supernova environment

Abstract

We combine the thermal QRPA approach with the Skyrme energy density functional theory (Skyrme-TQRPA) for modelling the process of electron capture on nuclei in supernova environment. For a sample nucleus, ${}^{56}$Fe, the Skyrme-TQRPA approach is applied to analyze thermal effects on the strength function of GT${}_{+}$ transitions which dominate electron capture at $E_e\le 30$~MeV. Several Skyrme interactions are used in order to verify the sensitivity of the obtained results to the Skyrme force parameters. Finite-temperature cross sections are calculated and the results are compared with those of the other model calculations.

4 figures. arXiv admin note: text overlap with arXiv:1602.07869

References in corpus (6)

• Theory of Core-Collapse Supernovae
• Stellar electron-capture rates calculated with the finite-temperature relativistic random-phase approximation
• Stellar electron-capture rates in pf-shell nuclei from quasiparticle random-phase approximation calculations
• Modification of the Brink-Axel Hypothesis for High Temperature Nuclear Weak Interactions
• Inelastic neutrino scattering off hot nuclei in supernova environments
• Neutrino absorption by hot nuclei in supernova environments

Cited by in corpus (2)

• Unblocking of stellar electron capture for neutron-rich $N=50$ nuclei at finite temperature
• Thermal quasiparticle random-phase approximation calculations of stellar electron capture rates with the Skyrme effective interaction