MULTIPLE-SCATTERING IN PARTICULATE SURFACES - CROSS-POLARIZATION RATIOS AND SHADOWING EFFECTS

Multiple scattering and cross-polarization effects, as well as their r elationship with the surface particle density and the angle of inciden ce, are experimentally analyzed for metallic particulate surfaces. The analysis includes measurements (in the plane of incidence) of the co- and cross-polarized scattered intensities from surfaces constituted b y spherical metallic particles (diameter of 1.1 mu m approximately) on conducting flat substrates, illuminated by a He-Ne laser (lambda = 0. 633 mu m). Shadowing is specially studied through its effects on the c ross-polarization ratios for high values of either the angle of incide nce or the surface particle density.