Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-08-20
Phys.Rev.Lett.92:111101,2004
Astronomy and Astrophysics
Astrophysics
4 pages, three figures
Scientific paper
10.1103/PhysRevLett.92.111101
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.
Fuller George M.
Kolbe Edwin
Langanke K.-H.
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