Neutrino-induced nucleosynthesis and the site of the r-process

Details Neutrino-induced nucleosynthesis and the site of the r-process Neutrino-induced nucleosynthesis and the site of the r-process

1996-12-05

arxiv.org/abs/astro-ph/9612047v1

Phys.Rev.Lett. 78 (1997) 2694-2697

Astronomy and Astrophysics

Astrophysics

11 pages, 2 Postscript figures, RevTex

Scientific paper

10.1103/PhysRevLett.78.2694

If the r-process occurs deep within a Type II supernova, probably the most popular of the proposed sites, abundances of r-process elements may be altered by the intense neutrino flux. We point out that the effects would be especially pronounced for 8 isotopes that can be efficiently synthesized by the neutrino reactions following r-process freeze-out. We show that the observed abundances of these isotopes are entirely consistent with neutrino-induced nucleosynthesis, strongly arguing for a supernova r-process site. The deduced fluences place stringent constraints on the freeze-out radius and dynamic timescale of the r-process.

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