中文摘要：

在真空镀膜问题中，对蒸发出的有机分子颗粒作粗粒化处理，在假定其形貌为球体粒子条件下，针对由一定数量的、随机分布的蒸发微粒组成的多粒子体系，利用电磁学广义Lorenz—Mie理论研究了该多粒子体系对光的消光特性．计算结果表明，随着主粒子粒径的增大和数量的增加，消光系数呈现出先增大后减小的趋势，体系消光系数存在极大值；当平面波入射时，入射光能量相对高斯光束具有更大的损耗．另外，讨论了不同主粒子尺寸参数下电磁场幅值的分布特性．

英文摘要：

Assume that the vapor of organic polymers in a vacuum deposition process is composed of spherical particle by coarse graining to form a multiple particle system, and consider extinction properties of light for such a system consisting of up to 3 000 randomly distributed particles. The generalized Lorenz-Mie theory from electromagnetic theory is used. The results show that, with the increase of the size and number of primary particles, the extinction coefficients go up at the beginning and fall down afterwards, indicating the presence of maximum veJlues in the extinction coefficients. The energy of a plane incident wave decays faster than that of a Gaussian wave. Properties of electromagnetic fields under different primary particle sizes are also studied.