Determination of the Complex Index of Refraction of Spherical Aerosol Particles

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Abstract
This paper discusses the possibility for the determination of the properties of the substance of spherical aerosol particles by optical methods, i.e., the complex index of refraction. Optimal information is obtained concerning the light scattered by the aerosol particles by analyzing the degree of polarization, the ellipticity, and the angle that specifies the orientation of the ellipse of the field vector. The theoretical investigation has been based on narrow log normal size distributions and on complex indices of refraction: n = m (1 − ix) with m = 1.33 (1.41), (1.50), (1.60), and (1.70), and mx = 0.0 (0.02), (0.05), (0.07), and (0.10).