Presolar grain isotopic ratios as constraints to nuclear physics inputs for s-process calculations
oleh: Palmerini Sara, Busso Maurizio, Vescovi Diego, Cristallo Sergio, Mengoni Alberto, Simonucci Stefano, Taioli Simone
| Format: | Article |
|---|---|
| Diterbitkan: | EDP Sciences 2023-01-01 |
Deskripsi
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.