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GSI Helmholtzzentrum fur Schwerionenforschung, Planckstr. 1, 64291 Darmstadt, GermanyE-mail:g.martinez@gsi.deWe present nucleosynthesis studies based on hydrodynamical simulations of core-collapse su-pernovae and their subsequent neutrino-driven winds. Although the conditions found in thesesimulations are not suitable for the rapid neutron capture (r-process) to produce elements heavierthan A∼130, this can be solved by articially increasing the wind en tropy. In this way one canmimic the general behavior of an ejecta where the r-process occurs. We study the impact of thelong-time dynamical evolution and of the nuclear physics input on the nal abundances and showthat different nuclear mass models lead to signicant varia tions in the abundances. These differ-ences can be linked to the behaviour of nuclear masses far from stability. In addition, we haveanalyzed in detail the effect of neutron capture and beta-delayed neutron emission when matterdecays back to stability. In all our studied cases, freeze out effects are larger than previouslyestimated and produce substantial changes in the post freeze out abundances.11th Symposium on Nuclei in the Cosmos, NIC XIJuly 19-23, 2010Heidelberg, Germany

Explosive nucleosynthesis: nuclear physics impact using neutrino-driven wind simulations