Neutrino-induced nucleosynthesis as a result of mixing between the He and C-O-Ne shells in core-collapse supernova

TL;DR

This paper investigates how neutrino interactions with helium in supernovae can lead to nucleosynthesis, especially when helium mixes into the inner shells, affecting element formation during core-collapse events.

Contribution

It introduces a model for neutrino-induced nucleosynthesis considering helium mixing into the C-O-Ne shell in supernovae, highlighting the impact on the weak r-process.

Findings

Neutrino-induced spallation of helium contributes to nucleosynthesis.

Mixing helium into inner shells enhances the weak r-process.

Neutrino effects are significant at radii less than 10^9 cm.

Abstract

The nucleosynthesis yields from neutrino-induced spallation of 4He are calculated in case of penetration of some 4He into the carbon-oxygen-neon shell. The neutrino contribution to creation of the weak r-process component becomes noticeable in case 4He is dragged down at radii R < 10^9 cm.