Studies of ejected-electron spectra arising from O6+-He, Ne, Ar and N5+-He, Ne, Ar collisions

Electron energy spectra arising from collisions between He-like ions (O6+ and N5+) and rare gas atoms (He, Ne and Ar) were measured using zero-degree Auger electron spectroscopy with high energy resolution. The electrons were ejected from doubly excited Be-like ions produced by double electron capture from the targets. Triplet states in the doubly excited systems were predominantly produced in O6+-Ne and N5+-Ar collisions.