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Proceedings Paper

Comparison Of Millimeter-Wave Scattering: A Stellar Dendrite VS. Disk And Spheroids
Author(s): Sean G. O'Brien; George H. Coedecke
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Paper Abstract

A finite-element model was used to compute differential and total scattering cross-sections for polarized millimeter-wave radiation incident upon a model stellar dendrite ice crystal. Construction of equivalent cylindrical disk and oblate spheroid scatterers was then attempted with the Biot-Arago, Lorentz-Lorenz, and Pruggemann effective medium models. Edge-on and broadside incidence cases were employed in the comparison. Good agreement of scattering properties was found for equivalent oblate spheroids with maximum linear dimensions and aspect ratios equal to those of the dendrite. A two-step effective medium averaging process involving the Pruggemann model produced oblate spheroids which closely imitated the scattering properties of the dendrite.

Paper Details

Date Published: 20 November 1985
PDF: 8 pages
Proc. SPIE 0540, Southwest Conf on Optics '85, (20 November 1985); doi: 10.1117/12.976166
Show Author Affiliations
Sean G. O'Brien, New Mexico State University (United States)
George H. Coedecke, New Mexico State University (United States)

Published in SPIE Proceedings Vol. 0540:
Southwest Conf on Optics '85
Susanne C. Stotlar, Editor(s)

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