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arXiv · 1110.3886

Beta Decays of Isotones with Neutron Magic Number of N=126 and R-process Nucleosynthesis

Toshio Suzuki·Takashi Yoshida·Toshitaka Kajino·Takaharu Otsuka
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Abstract

Beta decays of the isotones with N=126 are studied by shell model calculations taking into account both the Gamow-Teller (GT) and first-forbidden (FF) transitions. The FF transitions are found to be important to reduce the half-lives, by nearly twice to several times, from those 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. A slight shift of the third peak of the element abundances in the r-process toward higher mass region is found.

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Toshio Suzuki, Takashi Yoshida, Toshitaka Kajino, Takaharu Otsuka. 2011-10-18. Beta Decays of Isotones with Neutron Magic Number of N=126 and R-process Nucleosynthesis. https://doi.org/10.1103/physrevc.85.015802

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