The s-Process Nucleosynthesis in Low Mass Stars: Impact of the Uncertainties in the Nuclear Physics Determined by Monte Carlo Variations

Gabriele Cescutti, Raphael Hirschi, Nobuya Nishimura, Thomas Rauscher, Jacqueline den Hartogh, Alex St J. Murphy, Sergio Cristallo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

We investigated the impact of uncertainties in neutron-capture and weak reactions (on heavy elements) on the s-process nucleosynthesis in low-mass stars using a Monte-Carlo based approach. We performed extensive nuclear reaction network calculations that include newly evaluated temperature-dependent upper and lower limits for the individual reaction rates. Our sophisticated approach is able to evaluate the reactions that impact more significantly the final abundances. We found that -decay rate uncertainties affect typically nuclides near s-process branchings, whereas most of the uncertainty in the final abundances is caused by uncertainties in neutron capture rates, either directly producing or destroying the nuclide of interest. Combined total nuclear uncertainties due to reactions on heavy elements are approximately 50%.
Original languageEnglish
Title of host publicationNuclei in the Cosmos XV
EditorsAlba Formicola, Matthias Junker, Lucio Gialanella, Gianluca Imbriani
PublisherSpringer Nature
Pages297-300
Number of pages4
ISBN (Print)9783030138752
DOIs
Publication statusPublished - 20 Aug 2019
Event15th International Symposium on Nuclei in the Cosmos, NIC 2018 - L'Aquila, Italy
Duration: 24 Jun 201829 Jun 2018

Publication series

NameSpringer Proceedings in Physics
Volume219
ISSN (Print)0930-8989
ISSN (Electronic)1867-4941

Conference

Conference15th International Symposium on Nuclei in the Cosmos, NIC 2018
Country/TerritoryItaly
CityL'Aquila
Period24/06/1829/06/18

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