PRODUCTION OF THE O5-4(J)) STATES BY ELECTRON-EXCITATION IN 10-34 MEVCOLLISIONS OF O5+ IONS WITH H-2, HE, NE, AR, KR AND XE TARGETS((1S2S2P P)

Absolute double differential cross sections (DDCS) for electron produc tion were determined for the Auger-decay of the (1s2s2sp P-4) state in 10-34 MeV collisions of O5+(1s(2)2s) ions with H-2, He, Ne, Ar, Kr, X e targets using zero-degree projectile Auger-electron spectroscopy. Du e to spin conservation, e-n interaction mechanisms are excluded to fir st order and thus the e-e interaction is expected to dominate the (1s( 2)2s S-2) --> (1s2s2p P-4) excitation. Auger electrons from the decay of the O5+(1s2s2p P-4) state to the O6+(1s(2)) ground state were obser ved. The electron scattering model, using calculated direct electron-i on impact excitation cross sections, was compared to the measured DDCS . These calculations included the effects of the alignment of the P-4( J) (J = 1/2, 3/2, 5/2) states and their subsequent angular-dependent A uger electron emission.