Weak interaction rates for Kr and Sr waiting-point nuclei under rp-process conditions

Details Weak interaction rates for Kr and Sr waiting-point nuclei under rp-process conditions Weak interaction rates for Kr and Sr waiting-point nuclei under rp-process conditions

2009-10-06

arxiv.org/abs/0910.1021v1

Phys.Lett.B680:438-442,2009

Physics

Nuclear Physics

Nuclear Theory

7 pages, 6 figures

Scientific paper

10.1016/j.physletb.2009.09.046

Weak interaction rates are studied in neutron deficient Kr and Sr waiting-point isotopes in ranges of densities and temperatures relevant for the rp-process. The nuclear structure is described within a microscopic model (deformed QRPA) that reproduces not only the half-lives but also the Gamow-Teller strength distributions recently measured. The various sensitivities of the decay rates to both density and temperature are discussed. Continuum electron capture is shown to contribute significantly to the weak rates at rp-process conditions.

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