Raman spectroscopy of powders: Effects of light absorption and scattering

Abstract

New expressions are derived from Kubelka—Munk theory to describe the Raman intensities observed by back-scattering from powder samples. The equations relate the Raman intensity to the diffuse reflectance R_∞ of the sample for two cases: (i) for a series of samples having constant values of the scattering coefficient, s, but which vary in their values of the absorption coefficient, k; and (ii) for a series of samples having constant values of k, but differing in their values of s. The predicted intensity dependences are compared with the results of experiment.