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

Details Neutrino-induced nucleosynthesis of A>64 nuclei: The nu p-process Neutrino-induced nucleosynthesis of A>64 nuclei: The nu p-process

2005-11-12

arxiv.org/abs/astro-ph/0511376v1

Phys.Rev.Lett.96:142502,2006

Astronomy and Astrophysics

Astrophysics

5 pages, 3 figures, submitted to Physical Review Letters

Scientific paper

10.1103/PhysRevLett.96.142502

We present a new nucleosynthesis process, that we denote 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 92,94Mo and 96,98Ru. This process also offers a natural explanation for the large abundance of Sr seen in an hyper-metal-poor star.

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