Studies in molecular dynamics. XII. Band shape of the depolarized light scattered from atomic fluids

摘要

The induced dipolehyphen;induced dipole autocorrelation functions for systems of atom interacting with Lennardhyphen;Jones, hardhyphen;sphere, and squarehyphen;well potentials are presented. No evidence for longhyphen;time powerhyphen;law tails on these functions is found. The band shapes calculated from the autocorrelation functions agree quantitatively with the available data on the band shapes of depolarized light scattering of atomic systems over an enormous range of temperature and density. The calculated results vary with the potential especially at high densities, and the agreement with experiment is within the uncertainty in the true atomic potential. This is true in spite of the earlier findings that the intensities calculated in this way are an orderhyphen;ofhyphen;magnitude too large at normal liquid densities because the calculations neglect the distortion of the polarizability of the individual atoms.