出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We review some of the uncertainties in calculating nucleosynthetic yields, focusing on the explosion
mechanism. Current yield calculations tend to either use a piston, energy injection, or
enhancement of neutrino opacities to drive an explosion. We show that the energy injection, or
more accurately, an entropy injection mechanism is best-suited to mimic our current understanding
of the convection-enhanced supernova engine. The enhanced neutrino-opacity technique is
in qualitative disagreement with simulations of core-collapse supernovae and will likely produce
errors in the yields. But piston-driven explosions are the most discrepant. Piston-driven explosion
severely underestimate the amount of fallback, leading to order-of-magnitude errors in the yields
of heavy elements. To obtain yields accurate to the factor of a few level, we must use entropy or
energy injection and this has become the NuGrid collaboration approach.
