1998/09/25 by K. Langanke, G. Martínez-Pinedo, G. Martinez-Pinedo · 1 citation
Physics and Astronomy · #Atomic and Molecular Physics #Neutrino Physics Research #Nuclear physics research studies #astro-ph #nucl-th
paper · pdf · doi:10.1016/s0370-2693(99)00363-9
published as Phys.Lett. B453 (1999) 187-193 · 5 pages, 3 figures, RevTeX 3.1, submitted to Phys. Lett. B
arxiv created 1998/09/25 · openalex publication_date 1999/05/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
At densities between 108 and 1010 g/cm3 electron capture in a presupernova collapse is believed to mainly occur on odd-odd nuclei. We have derived the rates for six of the most important electron capturing nuclei, 54,56,58Mn and 56,58,60Co, based on calculations of the Gamow-Teller strength distributions for the ground states and first excited states. These calculations have been performed by shell model diagonalization in the pf shell using a recently modified version of the KB3 interaction. The shell model rates are noticeably smaller than the presently adopted rates as the latter have been derived by placing the Gamow-Teller (GT) resonance at too low excitation energies.