THE PAIR POLARIZABILITY OF ARGON

Pair contributions to the polarizability of argon are calculated ab in itio. A large basis set, including diffuse orbitals, is employed. Corr elation effects are included using second-order Moller-Plesset perturb ation theory. The results are used to compute moments of the polarized and depolarized collision-induced light scattering spectra, and secon d dielectric, refractivity and Kerr virial coefficients. Some discrepa ncies with experiment are found, but overall the agreement is satisfac tory.