Determination of Models for Collision-Induced Polarizability by the Method of Moments

Abstract

The form of the function giving the variation of the induced anisotropic polarizability with interatomic separation in a pair of interacting atoms is obtained by the method of moments. The spectrum of depolarized light in gaseous Ar, Kr, and Xe and the second Kerr virial coefficient of Ar, used to convert relative to absolute scattered light intensities, are used in this analysis. The coefficients in the model for the induced anisotropy, ${\text{β (x)=(6A}}^2{\sigma }^{\text{−3}}{\mathrm{)\hspace{0.17em}[x}}^{\text{−3}}{\text{+(y/6) x}}^{\mathrm{-p}}]$ , where A is the polarizability of a single isolated atom, σ is the atomic diameter, and $\mathrm{x=r/\sigma }$ , are for Xe, for example, $\text{p=9.6}$ and $\text{y/6=−0.957}$ . These results clearly demonstrate that short‐range interactions have an important effect on the induced anisotropy.