“…It has been derived for electromagnetic scattering by a cylinder at normal incidence, 16 for scattering by a homogeneous sphere, 8,17,18 and for scattering by a coated sphere. [19][20][21] Since scattering for those three geometries is polarization preserving, the Debye series simplifies substantially. For scattering by a cylinder at normal incidence or by a sphere, there are eight partial-wave Fresnel coefficients that couple together in two groups of 4 (i.e., the TE coefficients couple together, and the TM coefficients couple together) to form the partial-wave scattering and interior amplitudes.…”