Calculation of the T matrix and the scattering matrix for ensembles of spheres

被引:618
作者
Mackowski, DW
Mishchenko, MI
机构
[1] SUNY STONY BROOK,STONY BROOK,NY 11794
[2] NASA,GODDARD INST SPACE STUDIES,NEW YORK,NY 10025
来源
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 1996年 / 13卷 / 11期
关键词
D O I
10.1364/JOSAA.13.002266
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We present a method for determination of the random-orientation polarimetric scattering properties of an arbitrary, nonsymmetric cluster of spheres. The method is based on calculation of the cluster T matrix, from which the orientation-averaged scattering matrix and total cross sections can be analytically obtained. An efficient numerical method is developed for the T-matrix calculation, which is faster and requires less computer memory than the alternative approach based on matrix inversion. The method also allows calculation of the random-orientation scattering properties of a cluster in a fraction of the time required for numerical quadrature. Numerical results for the random-orientation scattering matrix are presented for sphere ensembles in the form of densely packed clusters and linear chains. (C) 1996 Optical Society of America.
引用
收藏
页码:2266 / 2278
页数:13
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