出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Two-dimensional hydrodynamic simulations are performed to investigate r-process nucleosynthesis
in a collapsar using the model of MacFadyen and Woosley (1999). We have solved time
evolution of chemical composition with a large reaction network that contains 6000 nuclei. Nucleosynthesis
calculations show that the moderately low Ye (=0.4 such as in neutrino winds) results
in the production of nuclei up to A 90-130. So it is concluded that more neutron-rich environment
is needed to be a source of heavy r-nuclei.
