Abstract
The energy spectra of electrons emitted from the surface of the polycrystalline Pt target due to bombardment with Ne +, Ar + and Kr + ions were examined at large angles of detection. It was found that for emission angles θ = 132° −145° an additional broad peak occurs on the energy spectrum curve. This peak increases rapidly with increase of the angle θ and at θ ≈160° reaches its maximum value. The results obtained are discussed in the framework of the violent collision model. It is assumed that during violent collisions molecular autoionization is possible and as a result electrons with a preferred direction of emission can be generated. The influence of adsorbed layer and target temperature on the yield of autoionization electrons are also discussed.
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