Diffraction of a Uniform Complex Source Beam by a Circular Cone

The paper deals with the scalar (acoustic) diffraction of a uniform complex-source beam (Uniform CSB) by an acoustically soft or hard semiinfinite circular cone. The diffracted field is found by evaluating the bilinear modal form of the cone's Green's function and by assigning suitable complexvalued source coordinates. The field expansion is valid everywhere in space including the waist of the beam and consists of a diverging as well as of a converging part. Results are shown for the scalar fields diffracted and scattered by the area around the tip of the circular cone.