THE NON-COINCIDENCE EFFECT IN HIGHLY DILUTED ACETONE-CCL4 BINARY-MIXTURES - II - EXPERIMENTAL, THEORETICAL AND MONTE-CARLO SIMULATION RESULTS

The concentration dependence of the Raman non-coincidence effect is in vestigated for the nu(3)(C-12=O) band of the acetone-CCl4 binary mixtu res. Emphasis is placed mainly upon a comparison of the results obtain ed from Monte Carlo simulations with those from Raman measurements. Th ere is very good quantitative agreement between the results of the sim ulations and the experiments for the concentration dependence of the f irst moments of the isotropic and anisotropic bands, and hence the non -coincidence effect. These results on the observed and simulated conce ntration dependence of the non-coincidence effect are compared with th ose derived from the theory of Logan. This work confirms the validity of the theoretical treatment of chemical binary mixtures proposed by L ogan, at least for this particular case of a polar solute dissolved in a non-polar solvent. To our knowledge these Monte Carlo simulations o f spectral observables have been performed for chemical mixtures for t he first time.