Influence of the fission yield distribution on the nucleosynthesis in the r -process induced by neutron-star mergers*
Abstract
Abstract We investigate the role of nuclear fission fragment yield distributions in shaping r -process nucleosynthesis within the low-entropy environment of neutron-star-merger ejecta. Our results demonstrate that post-freeze-out fission fragment yields play a critical role in determining the abundance pattern of the second r -process peak and its right shoulder ( ), even though most fission cycles occur before the r -process freeze-out. This study employs the semi-empirical General Fission (GEF) model to systematically characterize fission properties.
Fields of Study & Subjects
Nuclear physics research studies
Gamma-ray bursts and supernovae
Nuclear reactor physics and engineering
Publication details
- Journal / source
- Chinese Physics C
- Volume
- 50
- Issue
- 5
- Pages
- 054103–054103
- Publication date
- 6 January 2026