Half-lives of N = 126 Isotones and the r-Process

Details Half-lives of N = 126 Isotones and the r-Process Half-lives of N = 126 Isotones and the r-Process

Aug 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1269..339s&link_type=abstract

THE 10TH INTERNATIONAL SYMPOSIUM ON ORIGIN OF MATTER AND EVOLUTION OF GALAXIES: OMEG-2010. AIP Conference Proceedings, Volume 1

Physics

Radioactive Decay Periods, Beta-Decay, Shell Model (Nuclear), Nucleosynthesis, Lifetimes, Relation With Nuclear Matrix Elements And Nuclear Structure, Shell Model, Cosmic Ray Nucleosynthesis

Scientific paper

Beta decays of N = 126 isotones are studied by shell model calculations. Both the Gamow-Teller (GT) and first-forbidden (FF) transitions are taken into account to evaluate the half-lives of the isotones (Z = 64-72) with the use of shell model interactions based on G-matrix. The FF transitions are found to be important to reduce the half-lives by twice to several times of those obtained by the GT contributions only. Possible implications of the short half-lives of the waiting point nuclei on the r-process nucleosynthesis during the supernova explosions are discussed.

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