1998/01/08 by D. J. Dean, K. Langanke, L. Chatterjee +2 · 1 citation
Physics and Astronomy · #nucl-th
paper · pdf · doi:10.1103/physrevc.58.536
published as Phys.Rev.C58:536-544,1998
arxiv created 1998/01/08 · arxiv updated 2009/12/01
We present Gamow-Teller strength distributions from shell model Monte Carlo studies of fp-shell nuclei that may play an important role in the pre-collapse evolution of supernovae. We then use these strength distributions to calculate the electron-capture cross sections and rates in the zero-momentum transfer limit. We also discuss the thermal behavior of the cross sections. We find large differences in these cross sections and rates when compared to the naive single-particle estimates. These differences need to be taken into account for improved modeling of the early stages of type II supernova evolution.