Scattering of aggregated particles illuminated by a zeroth-order Bessel beam

In this paper, the scattering of aggregated particles illuminated by a zeroth-order Bessel beam is investigated using the generalized Lorenz-Mie theory (GLMT). The beam shape coefficients (BSCs) of the zeroth-order Bessel beam are computed rigorously using analytical expressions. Numerical results concerning the scattering properties of aggregated particles located on the propagation axis of the incident zeroth-order Bessel beam are presented. The influences of the half-cone angle of the Bessel beam, the radius and the refractive index of the particles on the scattering pattern are discussed.