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Title

QRPA calculations of stellar weak-interaction rates

AuthorsSarriguren, Pedro
Issue Date2017
PublisherJagiellonian University
CitationActa Physica Polonica B 48(3): 287-292 (2017)
AbstractWeak-decay rates under various stellar density and temperature conditions are studied in several mass regions including neutron-deficient mediummass waiting-point nuclei involved in the rp-process, neutron-rich mediummass isotopes involved in the r-process, and pf-shell nuclei of special importance as constituents in presupernova formations. Weak rates are relevant to understand the late stages of the stellar evolution, as well as the nucleosynthesis of heavy nuclei. The nuclear structure involved in the weakdecay processes is described within a microscopic deformed quasiparticle random-phase approximation (QRPA) based on a selfconsistent mean field obtained from Skyrme Hartree–Fock + BCS calculations. This approach reproduces reasonably well both the experimental β-decay half-lives and the Gamow–Teller strength distributions measured under terrestrial conditions.
Description6 pág.; 3 gráf.. --Presented at the Zakopane Conference on Nuclear Physics “Extremes of the Nuclear Landscape”, Zakopane, Poland, August 28–September 4, 2016 .-- Open Access funded by Creative Commons Atribution Licence 4.0
Publisher version (URL)http://doi.org/10.5506/APhysPolB.48.287
URIhttp://hdl.handle.net/10261/155959
DOIhttp://dx.doi.org/10.5506/APhysPolB.48.287
E-ISSN1509-5770
Appears in Collections:(CFMAC-IEM) Artículos
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