Line shape and moment analysis in depolarized induced light scattering

We compare the two methods of deriving interaction-induced pair polarizabilities from collision-induced, depolarized spectra, namely classical line shape and moment analysis. We discuss their limitations and show that the joint use of line shape and moment analysis leads to the determination of an empirical pair polarizability anisotropy model which has maximal consistency with the available experimental results. We have applied the combined method to the pair spectrum of argon at room temperature (298 K) as an example.