Differential cross section of a dielectric ellipsoid by the T -matrix extended boundary condition method

The extended boundary condition method is applied to ellipsoidal dielectric scatterers that in general have no rotational symmetry. This represents a more general study of single-object scattering in the resonant range with the goal of extending the practical applications to a wider class of targets, including irregular shapes that can be described in terms of a best-fit ellipsoid. Expressions are presented and calculated results provided for an ellipsoid in the resonant range and comparison is made with an oblate spheroid of approximately the same volume as the ellipsoid. The importance of differences in the surface and internal propagation paths provided by the two scatterers is noted