Stimulation of a Layered Medium by $N$ External Dipoles

A layered spherical medium is excited by a number of external electric dipoles. Boundary-value problems for the involved individual and overall electromagnetic fields are formulated. The direct scattering problem is solved by a T-Matrix method. Explicit formulas for the far-field, the overall cross section and the total interaction cross sections are derived. Some preliminary numerical results on the variations of these cross sections are presented.