Light Scattering by Hexagonal Columns and Plates
Computations of light scattering by hexagonal columns and plates randomly oriented in two- and three-dimensional space are carried out by means of the geometrical ray tracing technique. Analyses are made for a number of crystal sizes, and for a visible wavelength of 0.55 pm and an infrared wavelength of 10.6 pm at which absorption plays a significant role. Scattering phase functions and degree of linear polarization computed from the ray tracing program are compared with those derived from experimental nephelometer measurements performed in the laboratory. Effects of the crystal size and shape on the scattering parameter will be described. We will also present the theoretical and experimental programs concerning light scattering by ice clouds to be carried out in the future.
KeywordsPhase Function Elevation Angle Scattering Angle Polarization Pattern Scatter Phase Function
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