Light-Mass Cluster Reactions in Supernova R-Process Original Research Article

In explosive circumstances of the neutrino-driven winds in gravitational core-collapse Type II supernovae (SNe), not only heavy neutron-rich nuclei but also light unstable nuclei play the significant roles. We here study the efficiency and sensitivity of the SN r-process nucleosynthesis to many relevant nuclear reaction rates, and discuss quantitatively that several specific nuclear reactions on light neutron-rich nuclei take very critical keys to the final nucleosynthesis yields of r-process elements [Sasaqui, Kajino, T., T., Otsuki, K., Mathews, G. J. and Nakamura, T., Astrophys. J.(2004), submitted].