Abstract
Abstract Based on the general Gaudsmit-Saunderson-Lewis model for multiple scattering in a semi-infinite medium, an expression accounting for the effects of multiple scattering on the shape of the backscattering energy spectrum has been obtained. This expression is represented by a series of ion angular distribution moments. The limits of the applicability of the small-angle approximation to the description of multiple scattering are defined. It is shown that the sensitivity of the angular distribution moments of multiple scattered ions to the type of ion-atom potential increases with an increase in the moment order. The possibility of investigation of the ion-atom interaction potential experimentally over a wide range of impact parameters by the backscattering method is discussed.
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