Autoionisation of C4+(2lnl') measured by electron spectroscopy in collisions of C6+with He

Ejected electrons from doubly-excited helium-like carbon ions, produced by 67 keV C 6+ +He collisions, were measured with high resolution zero-degree electron spectroscopy. Electrons from the configuration of 2lnl' (n>or=3) were observed in a wide energy range. Ejected electron energies from the 2l3l' configuration were determined and compared with theoretical calculations.