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Light Scattering In Optical Material Containing Polydisperse Spherical Nano-particles

机译：含多分散球形纳米粒子的光学材料中的光散射

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摘要

The interference approximation is used in theoretical study of Rayleigh light scattering by a system of polydisperse spherical nano-particles embedded in a homogeneous matrix. An expression for the intensity of scattered light is derived. The expression is significantly simplified on the assumption that a pair correlation function of particles is independent of their radii. In this case, the scattering coefficient can be represented as a sum of two terms. The first term corresponds to coherent scattering by a system of monodisperse particles and the second term is a contribution of incoherent scattering, which is caused by polydispersity of particles. Example of the model system is given where the pair correlation function is independent of particle radii. The consideration of examples shows that scattering coefficient increases with increase in degree of polydispersity. The obtained results may be used in discussion of turbidity of phase-separated glasses, glass-ceramics, colloidal suspensions and other materials.
机译：干涉近似用于瑞利光散射的理论研究，该理论是通过嵌入均质基体中的多分散球形纳米粒子系统进行的。得出散射光强度的表达式。假设粒子的对相关函数与半径无关，则可以大大简化表达式。在这种情况下，散射系数可以表示为两个项之和。第一项对应于单分散颗粒系统的相干散射，第二项对应于非相干散射的贡献，这是由颗粒的多分散性引起的。给出了模型系统的示例，其中对相关函数与粒子半径无关。实例的考虑表明，散射系数随着多分散度的增加而增加。所得结果可用于讨论相分离玻璃，玻璃陶瓷，胶体悬浮液和其他材料的浊度。

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