Molecular Collisions. VII. Nuclear Spin and Statistics Effects

Abstract

The effect of nuclear spin on the expressions for the differential and degeneracy averaged scattering cross sections for collisions of two diatomic molecules, developed in previous papers in this series, is considered. These expressions are then reformulated in terms of another basis set of functions, making use of the diagrammatic techniques introduced earlier. Collisions between indistinguishable molecules are also considered. The resulting expressions reduce, in the limiting case of spherical molecules, to previously known results.