基于Mie氏散射理论的石墨微球颗粒光散射特性研究

本文应用Mie氏散射理论对石墨微球颗粒光散射的性质进行了理论分析与数值计算,得到了消光特性与入射波长及粒子半径,散射强度与散射角以及散射强度与参数x的关系.结果表明,粒子的半径越小,其消光效果越好;入射波长越小,粒子的前向散射强度越强.因此,通过测量前向散射光的分布可以确定微球体颗粒的半径.

Study of Scattering Characteristics of Graphite Particles Based on Mie's Light Scattering Theory

The light scattering characteristics of graphite microsphere particles are analyzed in theory and calculated numerically by using Mie's scattering theory.The relation of the extinction characteristics with the incident wavelength and particle radius,the relation of the scattering intensity with the scattering angle and the relation of the scattering intensity with the parameter x are obtained.The results show that the less the particle radius is,the better the extinction effectiveness is;the shorter the incident wavelength is,the greater the forward scattering intensity of the particle is.Therefore,the radius of a microsphere can be determined through the measurement of the distribution of the forward scattering light.