Abstract
The interrelation between the binary encounter peak and the electron loss peak on one hand, and the soft electron peak and the electron loss cusp on the other hand is discussed both theoretically and experimentally. Particular examples concern the Ramsauer-Townsend structures in the binary encounter peak from 5.88 MeV/amu U29++Ne and 0.1 MeV/amu Ne0+He, He0+Ne collisions where absolute experimental data are compared with the electron impact approximation. Measurements and strong potential second Born calculations for the soft electron peak from 0.1 MeV/amu Ne0+He are also presented. The peak asymmetry is studied as a function of collision velocity and projectile species, and marked deviations from the behavior of the soft electron peak induced by charged particle impact are found.
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