Neutrino-induced fission of neutron-rich nuclei

Details Neutrino-induced fission of neutron-rich nuclei Neutrino-induced fission of neutron-rich nuclei

2003-08-20

arxiv.org/abs/astro-ph/0308350v1

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.

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