Beta decay rates of nuclei with 65 < A < 75 for pre-supernova and supernova evolution

Details Beta decay rates of nuclei with 65 < A < 75 for pre-supernova and supernova evolution Beta decay rates of nuclei with 65 < A < 75 for pre-supernova and supernova evolution

Mar 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007prama..68..423m&link_type=abstract

Pramana, vol. 68, Issue 3, p.423

Physics

1

Beta Decay Rates, Supernova Evolution, Spectral Distribution Method.

Scientific paper

The half-lives are calculated for the β^- decay process for nuclei in the mass range ˜65--75 relevant for the core of a massive star at the late burning stage of stellar evolution and the collapse that leads to supernova explosion. These half-lives and rates are calculated by expressing the β^- Gamow--Teller decay strengths in terms of smoothed bivariate strength densities. These strength densities are constructed in the framework of spectral averaging theory for two-body nuclear Hamiltonian in a large nuclear shell model space. The method has a natural extension to electron captures as well as weak interaction rates for r and rp-processes.

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