δ-Function Scattering. Molecular Collisions

Abstract

Molecular interactions are examined in which the intermolecular potential energy surface is approximated by a series of $\delta$ functions of appropriate integrated areas. The method is verified by comparisons with the results of other procedures. The δ‐function technique is found to require little computation time even for potentials approximated by $\text{60 δ}$ functions. The dependence of flux conservation upon atomic masses is explored. The procedure is extended to include four‐body collinear interactions.