1. First-principles modeling of electromagnetic scattering by discrete and discretely heterogeneous random media
- Author
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Mishchenko, Michael I., Dlugach, Janna M., Yurkin, Maxim A., Bi, Lei, Cairns, Brian, Liu, Li, Panetta, R. Lee, Travis, Larry D., Yang, Ping, and Zakharova, Nadezhda T.
- Subjects
Physics - Optics - Abstract
The main objective of this Report is to formulate the general theoretical framework of electromagnetic scattering by discrete random media rooted in the Maxwell-Lorentz electromagnetics and discuss its immediate analytical and numerical consequences. Starting from the microscopic Maxwell-Lorentz equations, we trace the development of the first-principles formalism enabling accurate calculations of monochromatic and quasi-monochromatic scattering by static and randomly varying multiparticle groups. We illustrate how this general framework can be coupled with state-of-the-art computer solvers of the Maxwell equations and applied to direct modeling of electromagnetic scattering by representative random multi-particle groups with arbitrary packing densities. This first-principles modeling yields general physical insights unavailable with phenomenological approaches. We discuss how the first-order-scattering approximation, the radiative transfer theory, and the theory of weak localization of electromagnetic waves can be derived as immediate corollaries of the Maxwell equations for very specific and well-defined kinds of particulate medium. These recent developments confirm the mesoscopic origin of the radiative transfer, weak localization, and effective-medium regimes and help evaluate the numerical accuracy of widely used approximate modeling methodologies., Comment: Review paper
- Published
- 2016
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