Gamow-Teller strength distributions in fp-shell nuclei

1997/07/29 by P. B. Radha, D. J. Dean, S. E. Koonin +2 · 1 citation
Physics and Astronomy · #nucl-th

paper · pdf · doi:10.1103/physrevc.56.3079

published as Phys.Rev.C56:3079-3086,1997

arxiv created 1997/07/29 · arxiv updated 2009/12/01

Abstract

We use the shell model Monte Carlo method to calculate complete 0f1p-shell response functions for Gamow-Teller (GT) operators and obtain the corresponding strength distributions using a Maximum Entropy technique. The approach is validated against direct diagonalization for 48Ti. Calculated GT strength distributions agree well with data from (n,p) and (p,n) reactions for nuclei with A=48-64. We also calculate the temperature evolution of the GT+ distributions for representative nuclei and find that the GT+ distributions broaden and the centroids shift to lower energies with increasing temperature.

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