Collision Integrals for the Exponential Repulsive Potential

Abstract

The exponential potential function, Ae^−r/ρ long has been regarded as the true qualitative form of the repulsive intermolecular potential at moderately small internuclear distances (or equivalently, high temperatures). Because of the increasing interest in gases at high temperatures it has become desirable to be able to evaluate the transport properties under these conditions. The calculation of integrals related to the usual collision integrals Ω^(l,s) and cross sections Q^(l) have been carried out for the exponential repulsive potential. Some high‐temperature viscosities have been calculated and compared to the calculated results of Amdur and Mason which are based on an experimental scattering potential.