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

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        1810.04556.pdf (PDF, 738Kb)
        Author
        Cescutti, Gabriele
        Hirschi, Raphael
        Nishimura, Nobuya
        Rauscher, Thomas
        den Hartogh, Jacqueline
        Murphy, Alex St J.
        Cristallo, Sergio
        Attention
        2299/21689
        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%.
        Publication date
        2019-08-20
        Published in
        Nuclei in the Cosmos XV
        Published version
        https://doi.org/10.1007/978-3-030-13876-9_51
        Other links
        http://hdl.handle.net/2299/21689
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