Enhancement of dielectronic processes inNe10++Hecollisions at low keV energies

Abstract

The method of high-resolution Auger spectroscopy was used to study mechanisms for double-electron capture producing the projectile configurations 3lnl′ and 4lnl′ (n>~4) in Ne10+ + He collisions. Emphasis was given to slow collisions with projectile energies near 1 keV. At low collision energies the production of the configurations 3lnl′ (n>~6) of nonequivalent electrons is found to become dominant. It is shown that dielectronic processes produced by the electron-electron interaction play a major role in the creation of the Ne8+(3lnl′) states.