Physics – Optics
Scientific paper
Dec 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apopt..17.3851a&link_type=abstract
Applied Optics, vol. 17, Dec. 15, 1978, p. 3851, 3852.
Physics
Optics
8
Electromagnetic Surface Waves, Light Scattering, Mie Scattering, Optical Resonance, Particle Interactions, Orientation, Photoabsorption, Scattering Cross Sections, Spheres, Statistical Distributions, Transmission Efficiency
Scientific paper
A calculation procedure has been developed (Chylek et al., 1976) for determining the scattering properties of irregularly shaped, randomly oriented particles. The procedure uses a modified form of the Mie theory for spheres with equivalent cross-sectional areas. The validity of the procedure is examined with reference to the work of Welch and Cox (1978). Particular consideration is given to: (1) the assumption that surface waves constitute the only major difference between scattering by spherical and nonspherical particles, (2) the identification of certain properties of the Mie coefficients with surface waves, and (3) the technique of removing surface waves from the Mie theory. It is concluded that the idea of determining the scattering properties of random orientations of irregular particles by eliminating surface waves from the Mie expansion is valid. It is also found that the technique for removing the resonances leads to the introduction of substantial fictitious absorption.
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