Moment analysis in depolarized light scattering: Determination of a single-parameter empirical pair polarizability anisotropy for Ne, Ar, Kr, Xe, and CH4

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Abstract
A method, based on classical physics, to utilize the first four even moments of the depolarized collision induced light scattering spectrum to derive an empirical model for the pair polarizability anisotropy of interacting molecules, with only one adjustable parameter, is described and applied to the spectra of Ne, Ar, Kr, Xe, and CH4. Good agreement with ab initio results in the literature is obtained and profiles calculated with these models are in excellent agreement with experiment.