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Coherent attenuation of electromagnetic waves by weakly absorbing dense random discrete (snow-like) media

The attenuation of the coherent intensity of the electromagnetic waves has been studied theoretically and experimentally as a function of the particle volume density in weakly absorbing random discrete media. It is shown that the dependences of extinction coefficients on the particle volume density...

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Bibliographic Details
Published in:Journal of communications technology & electronics 2015, Vol.60 (1), p.29-34
Main Author: Golunov, V. A.
Format: Article
Language:English
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Summary:The attenuation of the coherent intensity of the electromagnetic waves has been studied theoretically and experimentally as a function of the particle volume density in weakly absorbing random discrete media. It is shown that the dependences of extinction coefficients on the particle volume density ρ V in a two-component medium calculated in the approximation of strong-fluctuation theory are in good agreement with the experimental data obtained for artificial snow-like media in the millimeter-wave band. It has been found that, at the real part of the complex permittivity of the particle material ɛ′ = 2.5–3.15, the extremum of the dependence of the extinction coefficient on the volume density is achieved at ρ V ≈ 0.3. The volume density of snow-like media proves to be of little significance for the intensity of the volume scattering on the interval of volume density ρ V = [0.2–04].
ISSN:1064-2269
1555-6557
DOI:10.1134/S1064226915010052