Production of the O 5+(1s2s2p 4P J) states by electron excitation in 10-34 MeV collisions of O 5+ ions with H 2, He, Ne, Ar, Kr and Xe targets
Abstract
Absolute double differential cross sections (DDCS) for electron production were determined for the Auger-decay of the (1s2s2sp 4P) state in 10-34 MeV collisions of O 5+(1s 22s) ions with H 2, He, Ne, Ar, Kr, Xe targets using zero-degree projectile Auger-electron spectroscopy. Due to spin conservation, e-n interaction mechanisms are excluded to first order and thus the e-e interaction is expected to dominate the (1s 22s 2S) å (1s2s2p 4P) excitation. Auger electrons from the decay of the O 5+(1s2s2p 4P) state to the O 6+(1s 2) ground state were observed. The electron scattering model, using calculated direct electron-ion impact excitation cross sections, was compared to the measured DDCS. These calculations included the effects of the alignment of the 4P J ( J = {1}/{2}, {3}/{2}, {5}/{2}) states and their subsequent angular-dependent Auger electron emission.
- Publication:
-
Nuclear Instruments and Methods in Physics Research B
- Pub Date:
- April 1997
- DOI:
- 10.1016/S0168-583X(96)01042-7
- Bibcode:
- 1997NIMPB.124..413T