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arXiv · nucl-th/9809082

Supernova electron capture rates on odd-odd nuclei

K. Langanke·G. Martinez-Pinedo
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Abstract

At densities between 10^8 and 10^10} g/cm^3 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, {54,56,58}Mn and {56,58,60}Co, 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.

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K. Langanke, G. Martinez-Pinedo. 1998-09-25. Supernova electron capture rates on odd-odd nuclei. https://doi.org/10.1016/s0370-2693(99)00363-9

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