A Long, Cold, Early r-process? Neutrino-induced Nucleosynthesis in He   Shells Revisited
  We revisit a neutrino-driven r-process mechanism in the He shell of a core-collapse supernova, finding that it could succeed in early stars of metallicity < solar/1000, at relatively low temperatures and neutron densities, producing A ~ 130 and 195 abundance peaks over ~ 10-20 s. The mechanism is sensitive to the neutrino emission model and to neutrino oscillations. We discuss the implications of an r-process that could alter interpretations of abundance data from metal-poor stars, and point out the need for further calculations that include effects of the supernova shock. 
P. Banerjee (1), W. C. Haxton (2), Y.-Z. Qian (1) ((1) UMN, (2)   UCB/LBNL)
astro-ph.SR nucl-th