Electron Capture and Beta-Decay Rates for the Collapse of O+Ne+Mg Cores

We present a new set of electron (e) capture and beta -decay rates that improves previous calculations by Takahara et al. and Oda et al. by: (a) incorporation of recent charge-exchange and beta -decay data, (b) contributions of forbidden transitions, and (c) inclusion of e super(-) screening correct...

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Published inEPJ Web of conferences Vol. 66; pp. 7011 - 1-07011-4
Main Authors Hua Lam, Yi, Martínez-Pinedo, Gabriel, Langanke, Karlheinz, Jones, Samuel, Hirschi, Raphael, Zegers, Remco G. T., Alex Brown, B.
Format Journal Article
LanguageEnglish
Published EDP Sciences 2014
Subjects
Beta decay
Capture (nuclear)
Collapse
Electron capture
Forbidden transitions
Inclusions
Mathematical models
Screening
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Summary:We present a new set of electron (e) capture and beta -decay rates that improves previous calculations by Takahara et al. and Oda et al. by: (a) incorporation of recent charge-exchange and beta -decay data, (b) contributions of forbidden transitions, and (c) inclusion of e super(-) screening corrections. The experimental nuclear input is supplemented by theoretical data based on large-scale shell model calculations in the full sd-shell space using the USDB interaction. The impact of these new rates on the late-stage stellar evolution of 8.8M sub([middot in circle]) star is demonstrated.
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ISSN:2100-014X
2100-014X
DOI:10.1051/epjconf/20146607011