任意方位双球粒子体系散射极化特征与单个球的比较

COMPARISON THE POLARIZATION CHARACTERISTIC OF RANDOM ORIENTED TWO-SPHERES SYSTEM WITH A SINGLE ONE

本文用 T矩阵与场方程叠加相结合的方法 ,系统研究任意方位双球粒子体系散射矩阵各元素随两球球心的间距变化规律。详细推导了双球粒子体系 T矩阵的具体形式 ,并将 T矩阵所求得的散射矩阵与单个球的情况作了比较。数值计算表明 ,球心间间距的增加对该体系的散射矩阵影响不大 ,得出任意方位即对方位求平均的情况下 ,双球粒子体系的散射矩阵与体系中有较大尺寸参数的单球相似的结论。

Light scattering matrix of random oriented two spheres system is studied extensively by using the T matrix method and the principle of superposition. Computations for randomly oriented bispheres with touching and separated components are compared with those for a single sphere.And we discovered that for random oriented bisphere with not equal size parameter its polarization pattern is very similar to that of the single one with larger size.