Neutrino-induced nucleosynthesis of A>64 nuclei: the nu p process.


We present a new nucleosynthesis process that we denote as the nu p process, which occurs in supernovae (and possibly gamma-ray bursts) when strong neutrino fluxes create proton-rich ejecta. In this process, antineutrino absorptions in the proton-rich environment produce neutrons that are immediately captured by neutron-deficient nuclei. This allows for the nucleosynthesis of nuclei with mass numbers A>64, , making this process a possible candidate to explain the origin of the solar abundances of (92,94)Mo and (96,98)Ru. This process also offers a natural explanation for the large abundance of Sr seen in a hyper-metal-poor star.

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@article{Frhlich2006NeutrinoinducedNO, title={Neutrino-induced nucleosynthesis of A>64 nuclei: the nu p process.}, author={Claus Fr{\"{o}hlich and Gabriel Mart{\'i}nez-Pinedo and Matthias Liebend{\"{o}rfer and F . - K . Thielemann and Edward Bravo and W. Raphael Hix and Karlheinz Langanke and N. T. Zinner}, journal={Physical review letters}, year={2006}, volume={96 14}, pages={142502} }