Neutron capture on 130Sn during r-process freeze-out

TL;DR

This paper investigates how neutron capture on 130Sn influences the r-process nucleosynthesis during supernovae, highlighting the sensitivity of element abundance patterns to neutron capture cross sections.

Contribution

It provides new insights into the impact of neutron capture rates on r-process abundance distributions during supernova nucleosynthesis.

Findings

Abundance pattern is sensitive to 130Sn neutron capture cross section.

Changes include decreased 130Sn and increased 131Sn abundances.

Shift in rare earth and third peak element distributions.

Abstract

We examine the role of neutron capture on 130Sn during r-process freeze-out in the neutrino-driven wind environment of the core-collapse supernova. We find that the global r-process abundance pattern is sensitive to the magnitude of the neutron capture cross section of 130Sn. The changes to the abundance pattern include not only a relative decrease in the abundance of 130Sn and an increase in the abundance of 131Sn, but also a shift in the distribution of material in the rare earth and third peak regions.