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Neutrino-induced fission of neutron-rich nuclei

We calculate neutrino-induced fission cross sections for selected nuclei with Z=84-92. We show that these reactions populate the daughter nucleus at excitation energies where shell effects are significantly washed out, effectively reducing the fission barrier. If the r process occurs in the presence...

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Bibliographic Details
Published in:Physical review letters 2004-03, Vol.92 (11), p.111101.1-111101.4, Article 111101
Main Authors: KOLBE, E, LANGANKE, K, FULLER, G. M
Format: Article
Language:English
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Summary:We calculate neutrino-induced fission cross sections for selected nuclei with Z=84-92. We show that these reactions populate the daughter nucleus at excitation energies where shell effects are significantly washed out, effectively reducing the fission barrier. If the r process occurs in the presence of a strong neutrino fluence, and electron neutrino average energies are sufficiently high, perhaps as a result of matter-enhanced neutrino flavor transformation, then neutrino-induced fission could lead to significant alteration in the r-process flow in slow outflow scenarios.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.92.111101