Density narrowing effect in the collisional cluster scattering of the light by gases

International audienceThe spectral intensities of a collisional cluster scattering band in CF 4 gas have been computed using molecular dynamics. Several densities from 20 to 269 Amagat as well as several models of interaction induced polarizability and of intermolecular potential have been studied. A qualitative agreement with experimental results has been obtained showing the narrowing effect of the gas density on the two-body line shape of the collisional cluster Raman band