The effects of β-delayed proton emission on the path of the rp-process

Physics

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Decay By Proton Emission, Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages, 90<=A<=149

Scientific paper

The rp-process occurs in a hot hydrogen-rich stellar environment. Its trajectory passes through the most proton-rich nuclides in the periodic table. It has long been thought to be responsible for synthesizing at least the light p-process nuclides. Thus these nuclides can provide signatures for rp-process nucleosynthesis. Difficulties with various rp-process scenarios often focus on 92,94Mo and 96,98Ru p-nuclides, as their anomalously large abundances are difficult to produce in any model of nucleosynthesis. However, it now appears that they might be produced in the rp-process resulting from accretion onto a neutron star. If the rp-process does synthesize these nuclides, β-delayed proton emission might well resolve some of the difficulties made evident by the model calculations. .

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