Electron capture on iron group nuclei

Details Electron capture on iron group nuclei Electron capture on iron group nuclei

1998-01-08

arxiv.org/abs/nucl-th/9801012v1

Phys.Rev.C58:536-544,1998

Physics

Nuclear Physics

Nuclear Theory

Scientific paper

10.1103/PhysRevC.58.536

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.

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