Electron Capture on Nuclei in Stellar Environment

The stellar electron capture on nuclei is an essential, semi-leptonic process that especially significant in the central environment of core-collapse supernovae and explosive nucleosynthesis. In this article, basis original (absolute) electron-capture cross-sections under laboratory conditions we computed our previous work for a set medium-weight nuclear isotopes, extend study evaluate folded e−-capture rates environment. With aim, assume parent projectile electrons interact when they are deep interior during late stages evolution massive stars. Under these (high matter densities high temperatures pre-supernova supernova phases), choose two categories nuclei; first includes 48Ti 56Fe isotopes have A<65 belong to iron group nuclei, second heavier more neutron-rich 66Zn 90Zr (with A>65). former, takes place mostly stage, while latter occurs phase. A comparison with calculations, which were obtained by using various microscopic models employed single-charge exchange reactions, also included.