Presolar grain isotopic ratios as constraints to nuclear physics inputs for s-process calculations

EPJ Web of Conferences(2023)

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摘要
The isotopic abundances in presolar SiC grains of AGB origin provide important and precise constraints to those star nucleosynthesis models. By comparing the values of the s-element abundances resulting from calculations with the ones measured in these dust grains, it turns out that new measurements of weak-interaction rates in ionized plasmas, as well as of neutron-capture cross sections, are needed, especially in the region near the neutron magic numbers 50 and 82.
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关键词
nuclear physics inputs,presolar grain,isotopic ratios,s-process
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