Neutrino Effects Before, During and After the Freezeout of the r-Process Nucleosynthesis

Details Neutrino Effects Before, During and After the Freezeout of the r-Process Nucleosynthesis Neutrino Effects Before, During and After the Freezeout of the r-Process Nucleosynthesis

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005omeg.conf..293t&link_type=abstract

ORIGIN OF MATTER AND EVOLUTION OF GALAXIES 2003. Held 17-19 November 2003 in RIKEN, Wako, Saitama, Japan. Edited by M Terasawa,

Astronomy and Astrophysics

Astronomy

Scientific paper

We study the effects of neutrino interactions before, during and after the operation of the r-process in a neutrino-driven wind model with a short dynamical timescale. We find that charged- and neutral-current interactions can have specific unique effects on the final abundances. Early on, charged-current interactions determine the electron fraction, while later on, neutrino-induced neutron emission can continue to provide a slight neutron exposure even after the freezeout of the r-process. We propose that observations of an enhanced odd-even effect in the final abundances and a suppression of light nuclei in r-process material might be used to identify the neutrino fluxes in operation near the freezeout of the r-process.

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