Neutrinos, Fission Cycling, and the r-process
Abstract
It has long been suggested that fission cycling may play an important role in the r-process. Fission cycling can only occur in a very neutron rich environment. In traditional calculations of the neutrino driven wind of the core-collapse supernova, the environment is not sufficiently neutron rich to produce the r-process elements. However, we show that with a reduction of the electron neutrino flux coming from the supernova, fission cycling does occur and furthermore it produces an abundance pattern which is consistent with observed r-process abundance pattern in halo stars. Such a reduction can be caused by active-sterile neutrino oscillations or other new physics.
Keywords
Cite
@article{arxiv.astro-ph/0607180,
title = {Neutrinos, Fission Cycling, and the r-process},
author = {J. Beun and G. C. McLaughlin and R. Surman and W. R. Hix},
journal= {arXiv preprint arXiv:astro-ph/0607180},
year = {2008}
}
Comments
Typos corrected. Presented at NIC-IX, International Symposium on Nuclear Astrophysics - Nuclei in the Cosmos - IX, CERN, Geneva, Switzerland, 25-30 June, 2006