Scattering of evanescent wave generated by total reflection.

• Evanescent wave scattering by a particle above a plane surface is obtained. • The projection method is applied to the scattering problem. • The normalized DSCS and SCS for the scattering problem are calculated. An exact semi-analytical solution to a scattering problem of evanescent wave incident on a particle is obtained. The evanescent wave is generated by total reflection as an electromagnetic plane wave propagates from an optically denser medium to an optically thinner one. The scattered fields by and internal fields within the particle are expanded in terms of spherical vector wave functions, and an integral representation of spherical vector wave functions over cylindrical ones is used to compute the reflection of the scattered fields on the interface between the optically denser and thinner media. By applying the boundary conditions and projection technique, the unknown expansion coefficients of the scattered fields are determined. The scattering cross sections are evaluated, and the scattering characteristics are analyzed briefly. [ABSTRACT FROM AUTHOR]