SCATTERING OF LIGHT BY LARGE NONSPHERICAL PARTICLES - APPROXIMATION VERSUS T-MATRIX METHOD

被引：88

作者：

MACKE, A

MISHCHENKO, MI

MUINONEN, K

CARLSON, BE

机构：

[1] NASA,GODDARD INST SPACE STUDIES,NEW YORK,NY 10025

[2] HELSINKI UNIV OBSERV,SF-00014 HELSINKI,FINLAND

[3] NASA,SCI SYST & APPLICAT INC,NEW YORK,NY 10025

来源：

OPTICS LETTERS | 1995年 / 20卷 / 19期

关键词：

D O I：

10.1364/OL.20.001934

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report, for the first time to our knowledge, comparisons of light-scattering computations for large, randomly oriented, moderately absorbing spheroids based on the geometric-optics approximation and the exact T-matrix method. We show that in most cases the geometric-optics approximation is (much) more accurate for spheroids than for surface-equivalent spheres and can be used in phase function computations (but not in polarization computations) for nonspherical particles with size parameters as small as 60. Differences in the single-scattering albedo between geometric-optics and T-matrix results are surprisingly small, even for small size parameters. (C) 1995 Optical Society of America

引用

页码：1934 / 1936

页数：3

共 15 条

[1] ROLE OF SMALL ICE CRYSTALS IN RADIATIVE PROPERTIES OF CIRRUS - A CASE-STUDY, FIRE-II, NOVEMBER 22, 1991 [J].