The electromagnetic scattering of the charged inhomogeneous sand particle

This paper presents a charged coated sphere model to discuss the effect of an inhomogeneous dust particle on the propagation of the electromagnetic wave. The calculated results show that the extinction efficiency increases with the increase in surface charge density (and the increase in charge-mass ratio); and it first increases then decreases with the increase of the charge distributed angle, and a maximum value appeared when the charge distributed angle is 110°. In addition, when the core is the scattering medium and the shell is the absorbing medium, its attenuation efficiency is larger when the core is the absorbing medium but the shell is the scattering medium; and with the increase of the geometry size ratio of the particle's core-shell, the extinction efficiency of the former decreases but that of the latter increases.

► We discuss the effect of an inhomogeneous dust particle on the propagation of the electromagnetic wave. ► We examine the effect of surface charge on particles' electromagnetic scattering properties. ► The effect of the geometry size ratio on sands' electromagnetic scattering properties was discussed. ► The effect of the core-shell materials on sands' electromagnetic scattering properties was discussed.