Microwave analog measurements of the forward scattering produced by two spheres yield the extinction as a function of sphere separation for the case of one sphere’s being shadowed by the other. The effects of dependent scattering are obvious up to a separation distance of about ten sphere diameters. Side-scattering measurements show a resonance when the axis of the two-sphere system is in the scattering plane and bisects the scattering angle. The magnitude of at least one measured resonance is a factor of 44 larger than the scattering that is due to a single sphere.
© 1981 Optical Society of America
R. T. Wang, J. M. Greenberg, and D. W. Schuerman, "Experimental results of dependent light scattering by two spheres," Opt. Lett. 6, 543-545 (1981)