A REVIEW OF ELASTIC LIGHT-SCATTERING THEORIES

Mie scattering is an important tool for diagnosing microparticles or a erosol particles in technical or natural environments. Mie theory is r estricted to spherical, homogeneous, isotropic and non-magnetic partic les in st non-absorbing medium. However, as microparticles are hardly ever spherical or homogeneous, there is much interest in more advanced scattering theories. During recent decades, scattering methods for no n-spherical and non-homogeneous particles have been developed and even some computer codes are readily available. Extension of Mie theory co vers coated spheres, stratified spheres and clustered spheres. For hom ogeneous non-spherical particles such as spheroids, ellipsoids and fin ite cylinders, surface discretization methods have been developed. Sca ttering by inhomogeneous particles may be computed by volume discretiz ation methods.