Neutrino nucleosynthesis

Nucleosynthesis in massive stars by the neutrino process is studied using newly calculated cross sections, an expanded reaction network, and realistic models for 15 and 25 solar mass supernovae. The production of light isotopes from abundant progenitors is considered, along with that of several rare, heavy, proton-rich isotopes. In particular, new results are presented for 11B, 19F, 138La, and 180Ta. The production of these isotopes could potentially place limits on neutrino spectra and neutrino oscillations.