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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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Published in: | Journal of communications technology & electronics 2015, Vol.60 (1), p.29-34 |
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Main Author: | |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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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]. |
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ISSN: | 1064-2269 1555-6557 |
DOI: | 10.1134/S1064226915010052 |