SCATTERING OF ELECTROMAGNETIC RADIATION BY DUST-STORMS PARTICLES

Abstract

Scattering is a common and important phenomenon and needs to be taken into account in many applied sciences fields, from engineering to remote sensing. The amplitude matrix which linearly transforms the electric vector components of the incident wave into the electric vector components of the scattered wave is primary quantity that is used to define the scattering law, if known, it enables one to compute any other light scattering characteristics of the particles. In this work a general equations i.e., mathematical model are derived to estimate the amplitude matrix for geometry of dust storms particle which have prolate spheroid shape, and refractive index of 1.5 +0.002i. This particle is assumed to have for an arbitrary illumination and scattering directions with respect to the laboratory reference frame, provide that the scattering problem may be solved with respect to the particle reference frame. These equations are used along with the T-matrix technique to provide the results for homogeneous, dielectric rotationally symmetric dust storms particle. The main focus is on the effect of the shape and size of the dust storms particle on the determination of the scattering characteristics e.g., extinction, scattering and absorption cross section. It is found out that the expected results of the scattering characteristics depend on the shape and size of the dust storms particle in the range of wave length comparable to the size of the particle..