Orientational effects in the energy dependence of the reaction cross-section from model calculations

Abstract

A dynamical model to calculate the kinetic-energy dependence of the reaction cross-section is presented. The most important aspects of the present treatment area) an orientational dependence of the reaction barrier,b) the onset of a recrossing mechanism andc) the operation of alignment forces during the reaction time. Application to several reactions of oriented or nonoriented reactants’ geometry gives a satisfactory fit of the excitation function data providing a clear insight into the diagnosis of the reaction dynamics that governs the reactive collision.