Scattering analysis of conducting axisymmetic particles using the extended boundary condition method with discrete source

Abstract

In this paper the extended boundary condition method with discrete sources (DS) is introduced for the electromagnetic scattering problem of a conducting axisymmetric particle. The approximate solution is constructed as a linear combination of “Mie-potentials” with different origins. In order to take advantage of the rotational symmetry the DS are distributed on an auxiliary curve in the plane of the generatrix. The complete system of vector functions have an explicit exp (jm?-dependence which lead to a decoupling of the scattering problem over each azimuthal mode. It is shown that with the method discussed herein, the computational efficiency can be improved in comparison to that which use DS distributed on auxiliary surfaces.