中文摘要：

给出了一种结合射线追踪和蒙特卡罗方法计算含核粒子光散射的方法,内核粒子可以为稀疏分布也可为浓密分布.粒子外边界的反射和折射由射线追踪方法计算,而粒子内部的多次散射过程由蒙特卡罗方法模拟;当内核粒子为浓密随机分布时,其单次散射特性由基于静态结构因子（static structure factor）的浓密介质光散射理论计算.最后讨论了含核椭球粒子模型的单次散射特性.

英文摘要：

Light scattering by a particle containing inclusions is calculated by a combination of ray-tracing and Monte Carlo techniques. The distribution of the inclusions can be sparse or dense. While the individual reflection and refraction events at the outer boundary of a sphere particle are considered by a ray-tracing program, the Monte Carlo routine simulates the internal scattering processes. A dense - medium light - scattering theory based on the introduction of the static structure factor is used to calculate the single scattering characteristics for densely packed inclusions. Numerical results of the single scattering characteristics for a spheroid containing inclusions are discussed.