Abstract

The depolarization of light scattered by CH 3 F in the critical region has been studied as a function of temperature along the critical isochore. The observed depolarization ratio is found to increase rapidly as the critical point is approached. This anomalous behavior is examined in light of the existing theory on multiple scattering which suggests the introduction of a «scaling» variable D as a measure of the distance to the critical point. The dependence of the depolarization ratio on D is characterized by three distinct regions dominated by single scattering processes, multiple scattering processes, and gravity-induced density gradients, respectively

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