Concentration effects on collision-induced depolarized Rayleigh lineshapes in CS₂/CCl₄ mixtures

Abstract

We report measurements of depolarized Rayleigh spectra of liquid CS₂/CCl₄ mixtures following the procedure proposed by Cox and Madden and recently used by Hegeman and Jonas. We fit a linear function on two distinct regions of the logarithmic spectra. The slopes Δ depend nonlinearly on the mixture composition. A comparison of our results with those of Hegeman and Jones where we follow the number-density dependence seems to be straightforward for further exploration of our experimental data. Our results indicate that, while in the high-frequency range (region III) of the spectrum changes of pressure and number density have very similar effects, these two parameters affect the lower-frequency range (region II) in a quite different way.