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Neutrino-induced nucleosynthesis and the site of the r process

Haxton, W. C. and Langanke, K. and Qian, Y.-Z. and Vogel, P. (1997) Neutrino-induced nucleosynthesis and the site of the r process. Physical Review Letters, 78 (14). pp. 2694-2697. ISSN 0031-9007.

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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 eight 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 neutrino fluences place stringent constraints on the freeze-out radius and dynamic time scale of the r process.

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Additional Information:©1997 The American Physical Society. Received 5 December 1996. We thank George Fuller, Brad Meyer, and Friedel Thielemann for helpful discussions. This work was supported in part by the U.S. Department of Energy and the National Science Foundation. Y.-Z. Qian was supported by a grant at the California Institute of Technology.
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5891
Deposited By: Lindsay Cleary
Deposited On:07 Nov 2006
Last Modified:18 Sep 2014 18:11

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