Small-angle scattering of polarized light. I. comparison of theoretical predictions for isotropic and anisotropic spheres
Small-angle scattering of polarized light. I. comparison of theoretical predictions for isotropic and anisotropic spheres
复制标题
偏振光的小角散射。
DOI：
10.1002/polb.1989.090271007
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
P. Navard
中科院分区：
文献类型：
--
作者：
G. Meeten;P. Navard
本文介绍了小角光散射(SALS)的计算方法，并对各向同性球体和各向异性球体的计算结果进行了比较。对于各向同性球体，将精确的Mie理论与瑞利-甘斯-德拜(RGD)和反常绕射(AD)近似进行了比较，以研究这些近似的有效性。对于各向异性球体，将RGD与AD近似进行了比较。在RGD近似下对SALS的研究表明，对应于四叶三叶草花瓣的一阶强度极大值不仅是球体直径的函数，而且还取决于球体的各向同性和各向异性折射率。讨论了这一点的实际意义。
This paper describes small angle light scattering (SALS) calculations and compares the results for isotropic and anisotropic spheres. For isotropic spheres the exact Mie theory is compared with the Rayleigh-Gans-Debye (RGD) and the anomalous diffraction (AD) approximations in order to study the validity of the approximations. For anisotropic spheres the RGD is compared with the AD approximation. A study of SALS in the RGD approximation shows that the first-order intensity maximum corresponding to a lobe of the four-leaf clover pattern is not only a function of the sphere diameter but also depends on the isotropic and the anisotropic refractive index of the sphere. The practical implications of this are discussed.