Strongly screening electron capture rates of chromium isotopes in presupernova

Abstract

Taking into account the effect of electron screening on the electron energy and electron capture threshold energy, by using the method of Shell-Model Monte Carlo and Random Phase Approximation theory, we investigate the strong electron screening capture rates of chromium isotopes according to the linear response theory screening model. The strong screening rates can decrease by about 40.43\% (e.g., for ${}^{60}$Cr at $T_9=3.44,Y_e=0.43$). Our conclusions may be helpful to the researches of supernova explosion and numerical simulation.

arXiv comment9 pages, 2 figures,Accepted for publication in Astronomy and Astrophysics (RAA)

References in corpus (6)

• Shell model calculations of stellar weak interaction rates: I. Gamow-Teller distributions and spectra of nuclei in the mass range A=45-65
• Improved estimate of electron capture rates on nuclei during stellar core collapse
• Electron capture on iron group nuclei
• Electron capture of strongly screening nuclides ${}^{56}$Fe, ${}^{56}$Co, ${}^{56}$Ni , ${}^{56}$Mn ,${}^{56}$Cr and ${}^{56}$V in presupernova
• Electron capture of iron group nuclei in magnetars
• Gamow-Teller strength distributions and neutrino energy loss rates due to chromium isotopes in stellar matter

Cited by in corpus (4)

• The Dipole Magnetic Field and Spin-down Evolutions of The High Braking Index Pulsar PSR J1640-4631
• A short review of the pulsar magnetic inclination angles (II)
• A Magnetic-Monopole-Based Mechanism to the formation of the Hot Big Bang Modeled Universe
• A unified model of supernova driven by magnetic monopoles