Scattering Measurements Of Irregular Particles Vs. MIE-Theory

Scattering properties of mono- and polydisperse mixtures of randomly oriented rough spheres, cubes, octahedrons, and irregular particles are compared with Mie-calculations for smooth spheres of equal volume. Correspondence in the forward direction, as far as measured, is quite good for dielectric and absorbing materials, as well, whereas dominant differences occur at medium scattering angles and towards backscattering. Polarization properties of nonspherical particles are different from those of spheres, too, especially for non-absorbing materials. Additionally cross polarizing properties of irregular particles are discussed.