Neutrino-Induced Fission and r-Process Nucleosynthesis
Astrophysics
2009-11-07 v1 Nuclear Theory
Abstract
An r-process scenario with fission but no fission cycling is considered to account for the observed abundance patterns of neutron-capture elements in ultra-metal-poor stars. It is proposed that neutrino reactions play a crucial role in inducing the fission of the progenitor nuclei after the r-process freezes out in Type II Supernovae. To facilitate neutrino-induced fission, the proposed r-process scenario is restricted to occur in a low-density environment such as the neutrino-driven wind from the neutron star. Further studies to develop this scenario are emphasized.
Cite
@article{arxiv.astro-ph/0203194,
title = {Neutrino-Induced Fission and r-Process Nucleosynthesis},
author = {Y. -Z. Qian},
journal= {arXiv preprint arXiv:astro-ph/0203194},
year = {2009}
}
Comments
11 pages, 2 figures, to appear in ApJL