Analysis of the spectra of the depolarized component of Rayleigh light scattering (DRS) by a few simple organic liquids

Authors:

• T. Wróz,
• Jacek Kubicki,
• Ryszard Naskręcki

Abstract

The profiles of the depolarized component of Rayleigh light scattering were measured for a few organic liquids. The experimental spectra were analysed assuming the simplest model based on a partition of the spectrum into a reorientational part of lorentzian shape and an interaction-induced wing of exponential shape. Under this assumption a narrow spectral range was found, in which the residuals of the fit between the theoretical and the experimental curves were the smallest and the background effect on the parameters of the model was negligible. The partition point of the spectrum ω_p determined in the method of fitting the curves enables us to find the halfwidth at the half height of the Lorentz curve G{cyrillic}, the orientational relaxation times τ_or and rate constants of the exponent decay δ of the interaction-induced effect for chosen organic liquids (CS₂, CCl₄, C₆H₈, C₈H₁₀). © 1993.