Shell-model half-lives for the N=82 nuclei and their implications for the r-process

Details Shell-model half-lives for the N=82 nuclei and their implications for the r-process Shell-model half-lives for the N=82 nuclei and their implications for the r-process

1999-07-20

arxiv.org/abs/astro-ph/9907274v1

Phys.Rev.Lett. 83 (1999) 4502-4505

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.83.4502

We have performed large-scale shell-model calculations of the half-lives and neutron-branching probabilties of the r-process waiting point nuclei at the magic neutron number N=82. We find good agreement with the measured half-lives of 129Ag and 130Cd. Our shell-model half-lives are noticeably shorter than those currently adopted in r-process simulations. Our calculation suggests that 130Cd is not produced in beta-flow equilibrium with the other N=82 isotones on the r-process path.

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