| Issue |
EPJ Web Conf.
Volume 279, 2023
Nuclear Physics in Astrophysics – X (NPA-X 2022)
|
|
|---|---|---|
| Article Number | 07001 | |
| Number of page(s) | 6 | |
| Section | i process | |
| DOI | https://doi.org/10.1051/epjconf/202327907001 | |
| Published online | 22 March 2023 | |
https://doi.org/10.1051/epjconf/202327907001
The intermediate neutron-capture process in AGB stars
Institut d’Astronomie et d’Astrophysique, Université Libre de Bruxelles (ULB), CP 226, B-1050 Brussels, Belgium
* e-mail: arthur.choplin@ulb.be
Published online: 22 March 2023
The intermediate neutron-capture process is thought to arise when protons are mixed in a convective helium-burning zone. This can happen during the early Thermally-Pulsing (TP) Asymptotic Giant Branch (AGB) phase of low-mass, low-metallicity stars. After discussing the differences between the s- and i-processes in AGB stars, we highlight some critical (n, γ) reactions for i-process nucleosynthesis that may be experimentally constrained by the β-Oslo method. We then compare our s- and i-process nucleosynthesis predictions to the abundances of the Carbon-Enhanced Metal-Poor star HE2258-6358, which shows a composition pattern midway between the s- and r-process.
© The Authors, published by EDP Sciences, 2023
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