s-processing in asymptotic giant branch stars in the light of revised neutron-capture cross sections
- Current AGB stellar models provide an adequate description of the s-process nucleosynthesis that occurs. Nonetheless, they still suffer from many uncertainties related to the modeling of the 13C pocket formation and the adopted nuclear reaction rates. For many important s-process isotopes, a best set of neutron-capture cross sections was recently re-evaluated. Using stellar models prescribing that the 13C pocket is a by-product of magnetic-buoyancy-induced mixing phenomena, s-process calculations were carried out with this database. Significant effects are found for a few s-only and branching point isotopes, pointing out the need for improved neutron-capture cross section measurements at low energy.
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| Author: | Diego VescoviORCiD, René ReifarthORCiDGND |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-624593 |
| DOI: | https://doi.org/10.3390/universe7070239 |
| ISSN: | 2218-1997 |
| Parent Title (English): | Universe |
| Publisher: | MDPI |
| Place of publication: | Basel |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2021/07/11 |
| Date of first Publication: | 2021/07/11 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Release Date: | 2021/09/06 |
| Tag: | asymptotic giant branch stars; chemically peculiar stars; circumstellar dust; nuclear reaction cross sections; nucleosynthesis; s-process; stellar abundances |
| Volume: | 7 |
| Issue: | 7, art. 239 |
| Page Number: | 10 |
| First Page: | 1 |
| Last Page: | 10 |
| Note: | This work was partially supported by the German-Israeli Foundation (GIF No. I-1500- 303.7/2019). |
| HeBIS-PPN: | 487444647 |
| Institutes: | Physik / Physik |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 52 Astronomie / 520 Astronomie und zugeordnete Wissenschaften |
| 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik | |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - Namensnennung 4.0 |
