Effects of the Multiplicity of Impacts on Vibration-Translation Energy Transfer in Collinear Collisions.

摘要

An idealized model of nonreactive collinear C-B + A collisions has been developed for the calculation of the number of impacts and amount of vibration-translation energy exchange at each impact as functions of the mass distribution and the initial collision energy. The maximum number of impacts that a single collision can have is 90 degrees divided by the angle determined from the masses of atoms A, B, and C. The model is applied to the collinear collisions H-F + F, F-H + F, Cl-H + Cl, Br-H + Br, I-H + Cl, and several other hypothetical systems with particular emphasis on the dependence of energy exchange on the number of impacts. Comparison with exact trajectory calculations at high collision energies shows a diminished inelasticity as the result of repeated encounters between A and B in a single collision. (Author)