FREQUENCY-DEPENDENT POLARIZABILITIES OF O-2 AND VAN-DER-WAALS COEFFICIENTS OF DIMERS CONTAINING O-2

We report frequency-dependent dipole and quadrupole polarizabilities of the oxygen molecule in its (3) Sigma(g)(-) ground state. These properties are obtained by means of the multiconfiguration self-consistent field method and used for the computation of the van der Waals coefficients of (O-2)(2) and the O-2-Rg dimers, where Rg is He, Ne, Ar, and Kr. The required frequency-dependent polarizabilities of the rare gases were computed earlier by means of second-order many body perturbation theory.