University of Hertfordshire

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The s-process nucleosynthesis: Impact of the uncertainties in the nuclear physics determined by monte carlo variations

Research output: Contribution to journalConference articlepeer-review


  • 1708.01629

    Accepted author manuscript, 782 KB, PDF document


  • G. Cescutti
  • N. Nishimura
  • R. Hirschi
  • T. Rauscher
  • J. W. den Hartogh
  • A. St J. Murphy
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Original languageEnglish
Pages (from-to)432-435
Number of pages4
JournalMemorie della Societa Astronomica Italiana - Journal of the Italian Astronomical Society
Publication statusPublished - 1 Oct 2017
Event2017 AGB-Supernovae Mass Transition - Monte Porzio Catone, Italy
Duration: 27 Mar 201731 Mar 2017


We investigated the impact of uncertainties in neutron-capture and weak reactions (on heavy elements) on the s-process nucleosynthesis in low-mass stars and massive 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. We found β-decay rate uncertainties affect only a few nuclei near s-process branchings, whereas most of the uncertainty in the final abundances is caused by uncertainties in the neutron capture rates. We suggest a list of uncertain rates as candidates for improved measurement by future experiments.

ID: 16917562