The Innermost Ejecta of Core Collapse Supernovae
  We ensure successful explosions (of otherwise non-explosive models) by enhancing the neutrino luminosity via reducing the neutrino scattering cross sections or by increasing the heating efficiency via enhancing the neutrino absorption cross sections in the heating region. Our investigations show that the resulting electron fraction Ye in the innermost ejecta is close to 0.5, in some areas even exceeding 0.5. We present the effects of the resulting values for Ye on the nucleosynthesis yields of the innermost zones of core collapse supernovae. 
C. Fr\"ohlich, P. Hauser, M. Liebendoerfer, G. Martinez-Pinedo, E.   Bravo, W.R. Hix, N.T. Zinner, F.-K. Thielemann