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

C. Fröhlich·G. Martínez-Pinedo·M. Liebendörfer·F. -K. Thielemann·E. Bravo·W. R. Hix·K. Langanke·N. T. Zinner
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Abstract

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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C. Fröhlich, G. Martínez-Pinedo, M. Liebendörfer, F. -K. Thielemann, E. Bravo, W. R. Hix, K. Langanke, N. T. Zinner. 2005-11-12. Neutrino-induced nucleosynthesis of A>64 nuclei: The nu p-process. https://doi.org/10.1103/physrevlett.96.142502

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