| Abstract
| - By using an average heavy nuclei model, the effects of the electron screening on electron capture (EC) in core-collapse supernovae are investigated. A one-dimension code based on the Ws15M⊙ progenitor model is utilized to test the effects of electron screening during the collapsing process. The results show that, at high densities, the effects of electron screening on EC become significant. During the collapsing stage, the EC rate is decreased, the collapse time-scale is prolonged and the leakage of the neutrino energy is increased. These effects lead to an appreciable decrease in the initial energy of the bounce shock wave. The effects of electron screening in the other progenitor models are also discussed.
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