State-selective electron capture in collisions of He2+with H
- 28 September 1991
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 24 (18) , 4025-4048
- https://doi.org/10.1088/0953-4075/24/18/016
Abstract
Charge transfer into He+ (nl) states (n)5) in collisions (2-13 keV amu-1) of He2+ on atomic hydrogen has been studied by means of photon emission spectroscopy. State selective electron capture cross sections into the degenerate He+(4l) states have been determined by deconvoluting the intensity distribution of the He II (n=4 to n=3) emission along the total ion-beam path inside the collision chamber. They are compared with theoretical results, especially with the large-basis set extended atomic orbital calculations of Fritsch (1988). Generally good agreement with these extended calculations is found. However, the structures in the theoretical cross sections for capture into the non-dominantly populated n=4 states are not observed experimentally.Keywords
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