Dipole autocorrelation functions for rare-gas mixtures

Dipole autocorrelation functions are calculated classically and assuming binary interactions only, for rare-gas mixtures. For a Lennard-Jones potential and an exponential dipole with a reduced range ρ/σ=0.09, a normalized correlation function which is quite close to the experimental one is obtained. The calculated normalized correlation functions are found to be almost independent of the reduced potential well depth, ε/kT, over a wide range of e/kT and for ε/σ=0.09-0.11. Omission of the attractive part of the potential has only a small effect on the calculated correlation functions.