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Thermal effects on stellar neutron capture reactions using a quantum dynamical model
Conference proceeding   Open access   Peer reviewed

Thermal effects on stellar neutron capture reactions using a quantum dynamical model

Acta Physica Polonica B, Proceedings supplement, Vol.19(2026), pp.1-A7
XXXVIII Mazurian Lakes Conference on Physics (Piaski, Poland, 31/08/2025–06/09/2025)
31/03/2026

Abstract

Theoretical Nuclear Physics Nuclear Astrophysics

Neutron capture reactions in high-temperature environments play a vital role in our understanding of the age of the universe, as well as the function of nucleosynthesis in the creation of the heavy elements. In general , the temperatures characterizing these reactions are variable and can be split into two separate processes: the slow (s) and rapid (r) neutron capture processes. In this work, thermal effects are introduced at the initialisation of the wave-packet with an implementation of the time-dependent coupled channels wave-packet (TDCCWP) method. The agreement of this method with the already accepted CCFULL method is explored for the n+ 186Os reaction. Then, a comparison of thermally dependent cross sections are made, where a decrease in the cross section is found for an increasing temperature, along with a decrease of 19% in the reaction rate when a temperature-dependent cross section is used.

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