Scattering phase matrices are calculated for randomly oriented hexagonal cylinders and equivalent spheroids. The scattering solution for spheroids utilizes a numerical integral equation technique called the T-matrix method, while that for hexagonal cylinders employs a geometric ray-tracing method. Computational results show that there is general agreement for the phase functions P₁₁ for hexagonal cylinders and spheroids with the same overall dimensions or surface area, except for the 22 and 46° halo features and the backscattering maximum produced by the hexagonal geometry. Values of P₁₂ which are associated with linear polarization when the incident light is unpolarized differ in the forward directions where hexagonal cylinders have two positive polarization maxima. Large differences are observed in the P₃₃ and P₄₄ elements.

© 1983 Optical Society of America

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