Beta-decay half-lives at finite temperatures with the Skyrme-QRPA

F. Minato, K. Hagino

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Using finite temperature quasi-particle random phase approximation (FTQRPA) on the basis of finite temperature Skyrme-Hartree-Fock = BCS method, we study β̄decay half-lives for even-even neutron magic nuclei with N=82 in a finite temperature environment. We find that the β ̄decay half-life first decreases as the temperature increases for all the nuclei we study, although the thermal effect is found to be small at temperatures relevant to r-process nucleosynthesis. Our calculations indicate that the half-life begins to increase at high temperatures for open shell nuclei. We discuss this behavior in connection to the pairing phase transition.

Original languageEnglish
Title of host publication10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10
Pages207-212
Number of pages6
DOIs
Publication statusPublished - 2010 Sep 21
Event10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10 - Osaka, Japan
Duration: 2010 Mar 82010 Mar 10

Publication series

NameAIP Conference Proceedings
Volume1269
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10
CountryJapan
CityOsaka
Period10/3/810/3/10

Keywords

  • Finite temperature
  • Quasi particle random phase approximation
  • βdecay

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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