Abstract
An approximate quantum-mechanical calculation is made of the energy of interaction of H— and He. The results are not of high accuracy, but serve to indicate the general nature of the interaction. This knowledge makes it possible to calculate more accurate values of the interaction from measured elastic scattering cross sections. The resultant interaction is combined with the previously known interaction of H and He to give an approximation to the inelastic (electron detachment) cross section, which is shown to be in reasonable agreement with experiment. The calculations emphasize the importance of the repulsion forces rather than the attraction forces. The accuracy of a correction for the finite width of the ion beam is also examined in some detail.
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