T-matrix computations of light scattering by nonspherical particles: A review
T-matrix computations of light scattering by nonspherical particles: A review
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DOI：
10.1016/0022-4073(96)00002-7
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发表时间：
1996-05-01
影响因子：
2.3
通讯作者：
Mackowski, DW
中科院分区：
文献类型：
--
作者：
Mishchenko, MI;Travis, LD;Mackowski, DW
我们回顾了沃特曼T矩阵方法的现状，该方法是精确计算非球形粒子（包括单个粒子和复合粒子）光散射的最强大且广泛使用的工具之一，它基于直接求解麦克斯韦方程组。具体而言，我们讨论了计算非球形粒子集合的取向平均光散射特性的解析方法、克服在计算具有大尺寸参数和/或极端几何形状的单个非球形粒子的T矩阵时数值不稳定性的方法，以及计算复合/聚集粒子光散射的叠加方法。我们的讨论伴随着多个数值示例，这些示例展示了T矩阵方法的能力，并显示了简单凸形粒子（椭球体）的非球形度对光散射的影响。
We review the current status of Waterman's T-matrix approach which is one of the most powerful and widely used tools for accurately computing light scattering by nonspherical particles, both single and composite, based on directly solving Maxwell's equations. Specifically, we discuss the analytical method for computing orientationally-averaged light-scattering characteristics for ensembles of nonspherical particles, the methods for overcoming the numerical instability in calculating the T matrix for single nonspherical particles with large size parameters and/or extreme geometries, and the superposition approach for computing light scattering by composite/aggregated particles. Our discussion is accompanied by multiple numerical examples demonstrating the capabilities of the T-matrix approach and showing effects of nonsphericity of simple convex particles (spheroids) on light scattering.