SCATTERING ANALYSIS OF CONDUCTING AXISYMMETIC PARTICLES USING THE EXTENDED BOUNDARY-CONDITION METHOD WITH DISCRETE SOURCES

In this paper the extended boundary condition method with discrete sou rces (DS) is introduced for the electromagnetic scattering problem of a conducting axisymmetric particle. The approximate solution is constr ucted as a linear combination of 'Mie-potentials' with different origi ns. In order to take advantage of the rotational symmetry the DS are d istributed on an auxiliary curve in the plane of the generatrix. The c omplete system of vector functions have an explicit exp (jm phi)-depen dence which lead to a decoupling of the scattering problem over each a zimuthal mode. It is shown that with the method discussed herein, the computational efficiency can be improved in comparison to that which u se DS distributed on auxiliary surfaces.