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

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...

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Veröffentlicht in:EPJ Web of conferences 2023, Vol.279, p.6006
Hauptverfasser: Palmerini, Sara, Busso, Maurizio, Vescovi, Diego, Cristallo, Sergio, Mengoni, Alberto, Simonucci, Stefano, Taioli, Simone
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Sprache:eng
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Zusammenfassung: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.
ISSN:2100-014X
2100-014X
DOI:10.1051/epjconf/202327906006