On the validity of the impulse approximation for electron capture in asymmetric collisions
- 14 November 1981
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 14 (21) , L705-L710
- https://doi.org/10.1088/0022-3700/14/21/012
Abstract
For electron capture in asymmetric ion-atom collisions the projectile-target charge ratio is a natural expansion parameter. Recently Macek and Taulbjerg (1981) have claimed that the anomalies of the Coulomb T matrix introduce corrections to the impulse approximation which do not depend on this ratio. The authors show that this is due to the approximations they introduced, and that more accurate estimates lead to a dependence of their correction on the charge asymmetry. This correction may nevertheless be important even for rather asymmetric systems.Keywords
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