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Scattering by a slab containing randomly located cylinders: comparison between radiative transfer and electromagnetic
L Roux1, P Mareschal, N Vukadinovic
1Dassault Aviation, Saint-Cloud Cedex, France.
Summary
This study numerically solves wave scattering by randomly located cylinders, validating radiative transfer theory for thin systems. Dependent scattering and coherent effects like backscattering enhancement are observed.
Area of Science:
- Wave scattering phenomena
- Computational physics
- Electromagnetics
Background:
- Scattering of waves by complex media is crucial in various fields.
- Previous models often simplified the complexities of random distributions.
- Understanding wave propagation in disordered systems remains a challenge.
Purpose of the Study:
- To numerically solve the complete transmission problem for wave scattering by randomly located cylinders.
- To compare radiative transfer theory with a direct numerical solution of the wave equation.
- To investigate coherent effects and dependent scattering in such systems.
Main Methods:
- Numerical solution of the wave equation for wave scattering.
- Application of radiative transfer theory.
- Analysis of coherent effects including forward-scattering dip and backscattering enhancement.
Main Results:
- The complete transmission problem was solved numerically for the first time.
- Radiative transfer theory shows high accuracy even for optically thin systems.
- Dependent scattering and coherent effects were demonstrated.
Conclusions:
- Numerical wave scattering solutions validate radiative transfer theory for thin, disordered media.
- Coherent effects like backscattering enhancement are significant.
- Dependent scattering plays a role in wave propagation through randomly distributed scatterers.