Neutrino effects before, during and after the freezeout of the R-process

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.