Effect of u-g symmetry on direct and exchange excitations in ion-atom scattering
- 1 May 1973
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 6 (5) , L105-L108
- https://doi.org/10.1088/0022-3700/6/5/004
Abstract
Electron capture processes in He+-He collisions are studied, using a time of flight technique. In particular, differential cross sections for both resonant electron capture and capture into excited states are measured. Cross sections for electron capture in n=2p states show an oscillatory behaviour which is out of phase with cross sections corresponding to direct n=2p excitation. This observation brings a new strong support to the interpretation of He+-He excitation in the keV energy range, through rotational coupling.Keywords
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