This work was supported by the U.S. Office of Naval Research (grant N00014-89-J-313) and the U.S. Army Research Office (grant DAAL03-91-G-0229).
Journal of the Optical Society of America A: Optics, Image Science and Vision
Monte Carlo method, Dielectric measurements, Electromagnetic waves -- Scattering
Scattering and absorption coefficients are presented from Monte Carlo simulations of electromagnetic wave propagation in a volume of densely packed, random dielectric, absorptive spheres. The particles are modeled both with and without a surface adhesion that causes them to form clustered groups. Results for scatterer densities greater than a few percent by volume differ significantly from those obtained under the independentscattering assumption. The extinction rates agree well with analytic dense-medium theory. Results also show that, on account of local fields experienced by the particles, the system absorption is different from that predicted with an assumption of independent absorption. Scattering is increased when the spheres are deposited with surface adhesion that causes them to cluster and to form larger particles.
Zurk, L. M., Tsang, L., Ding, K. H., and Winebrenner, D. P. (1995). Monte Carlo simulations of the extinction rate of densely packed spheres with clustered and nonclustered geometries. JOSA A, 12(8), 1772-1781.