Physics – Nuclear Physics – Nuclear Theory
Scientific paper
Sep 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004rpao.conf..176s&link_type=abstract
THE r-PROCESS The Astrophysical Origin of the Heavy Elements and Related Rare Isotope Accelerator Physics. Proceedings of the Fi
Physics
Nuclear Physics
Nuclear Theory
Scientific paper
During the Kelvin-Helmholtz cooling phase of a protoneutron star, the intense neutrino flux of the protoneutron star drives a wind by depositing energy in the overlying material. It has been proposed that this neutrino-driven wind is a likely site for the r-process. We reexamine the physical conditions in the wind by paying particular attention to the injection region. We emphasize that the inner boundary of the wind is physically determined by treating the injection region and derive an approximate criterion for this boundary. We also study the dependence of a key parameter for the r-process, the neutron-to-seed ratio obtained in the wind, on the characteristics of neutrino emission. The neutrino luminosities and average energies required for successful r-process nucleosynthesis in the wind are explored.
Qian Yong-Zhong
Steiner Andrew W.
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