Scattering of Plasma Anisotropic Spherical Particle Incident by a High-order Bessel Beam

The analytical theory for the electromagnetic (EM) scattering of plasma anisotropic sphere illuminated by a high-order Bessel beam (HOBB) is investigated in this paper. The HOBB is presented using vector wave theory in which electric and magnetic field vectors satisfy Maxwell's equations. The fields inside the plasma sphere are expressed using eigenfunctions in spectral domain. Combing with the tangential continuous boundary condition at the surface of the sphere, the scattering coefficients are derived. The influence of plasma dielectric material, the spherical size and wave vector components of the beam on the radar cross section (RCS) are numerically analyzed which shows that the scattered field still has a peak at forward and backward direction, whereas for the higher order HOBB, the minimum appear at the forward and backward direction.