Abstract
In this paper, under the approximate condition of a static electrical field, the Raman depolarization ratios for the breathing vibrant modes of pyridine adsorbed on silver sol particles are calculated. Bispherical coordinates are used. The results indicate that the distortion of the incident field which is caused by the colloid aggregation contributes to an increase in the Raman depolarization ratio. It is also indicated by calculation that although the variation of the distance between two spheres has a strong effect on the depolarization ratio, the orientation of the adsorbed pyridine has a minimal effect when the chemical adsorption is not considered. The calculated results are in good agreement with the experimental results.
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