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- Title
Statistical Hauser-Feshbach Model Description of (n , α) Reaction Cross Sections for the Weak s-Process.
- Authors
Küçüksucu, Sema; Yiğit, Mustafa; Paar, Nils
- Abstract
The (n , α) reaction contributes in many processes of energy generation and nucleosynthesis in stellar environment. Since experimental data are available for a limited number of nuclei and in restricted energy ranges, at present only theoretical studies can provide predictions for all astrophysically relevant (n , α) reaction cross sections. The purpose of this work is to study (n , α) reaction cross sections for a set of nuclei contributing in the weak s-process nucleosynthesis. Theory framework is based on the statistical Hauser-Feshbach model implemented in TALYS code with nuclear masses and level densities based on Skyrme energy density functional. In addition to the analysis of the properties of calculated (n , α) cross sections, the Maxwellian averaged cross sections are described and analyzed for the range of temperatures in stellar environment. Model calculations determined astrophysically relevant energy windows in which (n , α) reactions occur in stars. In order to reduce the uncertainties in modeling (n , α) reaction cross sections for the s-process, novel experimental studies are called for. Presented results on the effective energy windows for (n , α) reaction in weak s-process provide a guidance for the priority energy ranges in the future experimental studies.
- Subjects
HAUSER-Feshbach theory; REACTION cross sections; NUCLEOSYNTHESIS; DENSITY functionals; STARS
- Publication
Universe (2218-1997), 2022, Vol 8, Issue 1, p25
- ISSN
2218-1997
- Publication type
Article
- DOI
10.3390/universe8010025