REAL

The s-process nucleosynthesis in low mass stars: impact of the uncertainties in the nuclear physics determined by Monte Carlo variations

Cescutti, G. and Hirschi, R. and Nishimura, N. and Rauscher, T. and den Hartogh, Jacqueline and Murphy, A. St. J. and Cristallo, S. (2019) The s-process nucleosynthesis in low mass stars: impact of the uncertainties in the nuclear physics determined by Monte Carlo variations. SPRINGER PROCEEDINGS IN PHYSICS, 219. pp. 297-300. ISSN 0930-8989

[img]
Preview
Text
1810.04556.pdf
Available under License Creative Commons Attribution.

Download (756kB) | Preview

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 beta-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%.

Item Type: Article
Uncontrolled Keywords: Astrophysics - Solar and Stellar Astrophysics; Nuclear Experiment; Nuclear Theory;
Subjects: Q Science / természettudomány > QC Physics / fizika
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 29 Jan 2024 14:36
Last Modified: 29 Jan 2024 14:36
URI: http://real.mtak.hu/id/eprint/186591

Actions (login required)

Edit Item Edit Item