Theoretical study of the elastic scattering of h+by xe

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Abstract
The potential energy curves of (xeh)+ obtained by kubach and sidis (see abstr. A74943 of 1973) are used in the computation of elastic differential cross sections for the scattering of h+ by xe. The calculations are carried out either in an extended semiquantal landau-zener-stueckelberg jwkb approximation or by direct numerical integration of quantal three-state close-coupled equations. The oscillations in the elastic cross section are attributed to stueckelberg-type interferences in contrast with the earlier interpretation of weise et al. (see abstr. A72263 of 1971) of these structures as due to rainbow scattering. Discrepancies at large angles are explained by our neglect of higher molecular states leading to h*+xe+ or h++xe*.