MEASUREMENT OF DEPOLARIZATION RATIOS IN RAMAN SPECTRA.
Creators:Bulkin, Bernard J.
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Publisher:Ohio State University
Although crystalline powders give excellent laser excited Raman spectra, it has not been possible to measure the depolarization ratios because the Raman lines are depolarized by scattering off other crystal faces. This difficulty can be overcome by immersion of the powder in a medium of like refractive index. The application of this method to several different types of materials will be illustrated. The use of a digital ratemeter to rapidly measure depolarization ratios with high accuracy and well defined standard deviation will be discussed. Digital methods also enable one to obtain good Raman spectra and accurate depolarization ratios in samples of high background.
Author Institution: Department of Chemistry, Hunter College of the City University of New York
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