期刊
UNIVERSE
卷 8, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/universe8010025
关键词
neutron induced reactions; alpha emission; Hauser-Feshbach model; s-process
资金
- QuantiXLie Centre of Excellence
- Croatian Government
- European Union
- Competitiveness and Cohesion Operational Programme [KK.01.1.1.01]
- Scientific and Technological Research Council of Turkey (TUBITAK) [1059B142000254]
This study investigates the (n,alpha) reaction cross sections for weak s-process nucleosynthesis in stellar environment using a theoretical model. The results indicate the relevant energy ranges and call for novel experimental studies to reduce model uncertainties.
The (n,alpha) 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,alpha) reaction cross sections. The purpose of this work is to study (n,alpha) 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,alpha) 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,alpha) reactions occur in stars. In order to reduce the uncertainties in modeling (n,alpha) reaction cross sections for the s-process, novel experimental studies are called for. Presented results on the effective energy windows for (n,alpha) reaction in weak s-process provide a guidance for the priority energy ranges in the future experimental studies.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据