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 semi-infinite circular cone. The diffracted field is found by evaluating the bilinear modal form of the cone´s Green´s function and by assigning suitable complex-valued 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.