聚苯乙烯微球的Mie散射特性分析

应用Mie散射理论针对聚苯乙烯微球的光散射特性进行了研究，分析了入射光波长、偏振角和微粒直径对散射光强的影响。结果表明：进行聚苯乙烯微球粒子散射方面的研究，应该选择可见光波段中波长较短的作为光源；在其它条件不变的情况下，波长越短散射光强集中分布的角度越小，粒子直径越大散射光强越集中分布在小角度内；球形粒子的散射光强与散射角的变化关系，不仅与入射光波长有关，而且与散射颗粒与周围介质的相对折射率m有关。

Characteristic Analysis on Mie Scattering of Polystyrene Microsphere

The research on scattering characteristics of polystyrene microsphere.are carried out by using Mie scattering theory. The effect of wavelength, polarization angle and particle diameter on scattering light intensity are analysed. Three results are obtained. Firstly, for scattering experiments, it is necessary to choose a shorter wavelength of visible light as light source. Secondly, when other conditions remain unchanging, the shorter the wavelength is, the smaller the angle of the distribution for scattering light intensity is; the bigger the particle diameter is, the smallet the angle of the distribution of scattering light intensity is. Thirdly, the relationship between the light intensity and scattering angle is relevant with both wavelength and relative refractive index.