Temperature Effects on the Raman Intensity of Liquid Samples and an Averaged Molecular Field

The relative Raman intensities of the v1 line of carbon tetrachloride, the v8 line of acetonitrile, and the v3 line of chloroform were observed in the liquid phase and at various temperatures. The apparent intensity change due to the temperature were explained in terms of the local field effect, the density change, the statistical distribution effect, and the contribution of transition hyperpolarizability in the presence of a non-zero averaged molecular field.