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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。
The light scattering properties of polystyrene microspheres were studied using Mie scattering theory. The effects of incident light wavelength, polarization angle and particle diameter on the light intensity were analyzed. The results show that the shorter wavelength in the visible light band should be chosen as the light source for the study of particle scattering of polystyrene microspheres. Under the condition of other constant, the smaller the angle of scattering is, The larger the diameter is, the more the scattered light intensity is concentrated within a small angle. The relationship between the scattering intensity and the scattering angle of spherical particles is not only related to the wavelength of incident light but also to the relative refractive index m of the scattering particles and the surrounding medium.