Impacts of Nuclear-Physics Uncertainty in Stellar Temperatures on the s-Process Nucleosynthesis

Nishimura, N.; Cescutti, G.; Hirschi, R.; Rauscher, T.; Den Hartogh, J.; Murphy, A. St. J.

Abstract

We evaluated the uncertainty relevant to s-process nucleosynthesis using a Monte-Carlo centred approach. We are based on a realistic and general prescription of temperature dependent uncertainty for the reactions. We considered massive stars for the weak s-process and AGB stars for the main s-process. We found that the adopted uncertainty for (n, γ) rates, tens of per cent on average, affect the production of s-process nuclei along the β-stability line, while for β-decay, for which contributions from excited states enhances the uncertainty, has the strongest impact on branching points.

Citation

Nishimura, N., Cescutti, G., Hirschi, R., Rauscher, T., Den Hartogh, J., & Murphy, A. S. J. Impacts of Nuclear-Physics Uncertainty in Stellar Temperatures on the s-Process Nucleosynthesis. Presented at Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016), Niigata, Japan

• Presentation Conference Type: Conference Paper (published)
• Conference Name: Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016)
• Online Publication Date: Feb 27, 2017
• Publication Date: Feb 28, 2017
• Deposit Date: Jun 16, 2023
• Journal: JPS Conference Proceedings
• Print ISSN: 2435-3892
• Publisher: Thieme Gruppe
• Peer Reviewed: Peer Reviewed
• DOI: https://doi.org/10.7566/jpscp.14.020903
• Public URL: https://keele-repository.worktribe.com/output/468737