Microscopic calculation of the rates of electron captures which induce the collapse of O+Ne+Mg cores

Details Microscopic calculation of the rates of electron captures which induce the collapse of O+Ne+Mg cores Microscopic calculation of the rates of electron captures which induce the collapse of O+Ne+Mg cores

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989nupha.504..167t&link_type=abstract

Nuclear Physics A, Volume 504, Issue 1, p. 167-192.

Physics

Nuclear Physics

26

Scientific paper

The rates of electron captures which induce the collapse of the stellar cores composed of 16O, 20Ne and 24Mg are calculated microscopically using the shell model wave functions of Wildenthal. Since these are the best wave functions available for sd-shell nuclei, the capture rates calculated in this paper are at present the most reliable ones. Our electron capture rates differ up to an order of magnitude from those previously calculated with the gross theory and FFN. The difference of the capture rates is analyzed and the effects on the evolution of the O + Ne + Mg core are discussed. In the appendix, we tabulate the capture rates as well as the associated neutrino energy loss rates and γ-ray heating rates in the form available for the calculation of the evolution of the O + Ne + Mg core.

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