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Evidence for nucleosynthesis in supernova $γ$-process: Universal scaling on p-nuclei

T. Hayakawa·N. Iwamoto·T. Shizuma·T. Kajino·H. Umeda·K. Nomoto
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Abstract

With analyzing the solar system abundance, we have found two universal scaling laws concerning the p- and s-nuclei. They indicate that the gamma-process in supernova (SN) explosions is the most promising origin of the p-nuclei that has been discussed with many possible nuclear reactions and sites for about fifty years. In addition the scalings provide new concepts: an universality of the gamma-process and a new nuclear cosmochronometer. We have carried out gamma-process nucleosynthesis calculations for typical core-collapse SN explosion models and the results satisfy the observed scalings.

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T. Hayakawa, N. Iwamoto, T. Shizuma, T. Kajino, H. Umeda, K. Nomoto. 2004-09-28. Evidence for nucleosynthesis in supernova $γ$-process: Universal scaling on p-nuclei. https://doi.org/10.1103/physrevlett.93.161102

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