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Backscattering of s-polarized light from a cloud of small particles above a dielectric substrate

Abstract : The scattering of s-polarized electromagnetic waves by a cloud of small particles above an interface is numerically studied, accounting for multiple scattering. The backscattering effect is first observed without the interface and the influence of the index of the particles is shown. In the case of a dilute system of particles with a low index such that no backscattering peak appears without the interface, it is shown that the introduction of an interface restores the backscattering effect. A physical mechanism responsible for this peak is described. In conclusion, a comparison of this model with scattering by rough surfaces is made.
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https://hal-iogs.archives-ouvertes.fr/hal-01617312
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Submitted on : Monday, October 16, 2017 - 2:43:09 PM
Last modification on : Friday, July 3, 2020 - 9:28:03 AM

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Jean-Jacques Greffet. Backscattering of s-polarized light from a cloud of small particles above a dielectric substrate. Waves in Random Media, Informa UK (Taylor & Francis);Institute of Physics (IOP), 1991, 1 (3), pp.S65 - S73. ⟨10.1088/0959-7174/1/3/006⟩. ⟨hal-01617312⟩

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