AUGER-ELECTRON EMISSION FOLLOWING DOUBLE-ELECTRON CAPTURE IN 150-KEV NE10++HE COLLISIONS

The method of projectile electron spectroscopy was used to measure the Ne8+ Auger decay of the configurations 3lnl' and 4lnl' (n greater-tha n-or-equal-to 4) created by double electron capture in 150-keV Ne10+ He collisions. Auger yields were evaluated to convert the experimenta l cross sections for Auger-electron emission into the corresponding cr oss sections for double electron capture. It is found that the cross s ections attributed to the configurations 3lnl' follow a n-3 law, while the excitation of the configurations 4lnl' is rather 'selective for n = 5. It is shown by means of model calculations that the electron cor relation plays a decisive role in the capture mechanisms producing the configurations 3lnl'.