摘要
本文利用T矩阵法,通过严格求解N个粒子的多次散射方程,发展了随机分布的多个非球形群聚散射体的集合性相干散射的计算机数值模拟方法。数值地给出了在空间随机分布的群聚散射体的极化散射与粒子的形状、大小、空间分布和取向等参量之间定量的函数关系。并将随机分布的群聚散射体的后向散射与单个粒子和单个群聚体独立散射的数值结果进行了比较,表明多个粒子的群聚分布对散射特性产生显著的影响。
As the scatterer's size is comparable with the wavelength, a rigorous solution of T-matrix is used to calculate scattering from the scatterer. When scatterers are non-uniformly clustered, coherency of collective scattering from scatterers must be taken into account. Numerical simulations of polarized scattering from random clusters of spatially-oriented and non-spherical particles are developed by multiple scattering formulation of T-matrix method. Numerical results present that the polarized bistatic and back-scattering are functionally dependent on clustering and other physical paramaters.
基金
国家自然科学基金
上海应用物理研究中心
上海应用材料研究和发展基金
关键词
随机分布
非球形粒子
群聚粒子
多次散射
电磁学
Random distribution, Non-spherical particles, Clustering particles, Multiple scattering
