Abstract
The s-process in massive stars, producing nuclei up to A ≈ 90, has a different behaviour at low metallicity if stellar rotation is significant. This enhanced s-process is distinct from the s-process in massive stars around solar metallicity, and details of the nucleosynthesis are poorly known. We investigated nuclear physics uncertainties in the enhanced s-process in metalpoor stars within a Monte-Carlo framework. We applied temperature-dependent uncertainties of reaction rates, distinguishing contributions from the ground state and from excited states. We found that the final abundance of several isotopes shows uncertainties larger than a factor of 2, mostly due to the neutron capture uncertainties. A few nuclei around branching points are affected by uncertainties in the β-decay.
Original language | English |
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Article number | 012051 |
Number of pages | 4 |
Journal | Journal of Physics: Conference Series |
Volume | 940 |
Issue number | 1 |
DOIs | |
Publication status | Published - 31 Jan 2018 |
Event | Nuclear Physics in Astrophysics Conference (NPA VII) - The Royal York Hotel, York, United Kingdom Duration: 18 May 2015 → 22 May 2015 http://www.nuclearalliance.uk/nuclear-physics-in-astrophysics-conference-npa-vii/ |