The coherent and incoherent light scattering in the vicinity of backscattering direction on the particles of cirrus clouds

Natalia V. Kustova; Victor A. Shishko; Alexander V. Konoshonkin; Dmitry N. Timofeev; Anatoly G. Borovoi

doi:10.1117/12.2576394

12 November 2020 The coherent and incoherent light scattering in the vicinity of backscattering direction on the particles of cirrus clouds

Natalia V. Kustova, Victor A. Shishko, Alexander V. Konoshonkin, Dmitry N. Timofeev, Anatoly G. Borovoi

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Proceedings Volume 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 115605D (2020) https://doi.org/10.1117/12.2576394
Event: 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2020, Moscow, Russian Federation

Abstract

The paper presents the results of numerical calculations of the scattered light intensity by large randomly oriented particles of arbitrary shapes with flat faces in the backscattering cone [170°, 180°], performed in the physical optics approximation. It is shown that light scattered in the backscattering direction for a single large particle of arbitrary shape is divided into coherent and incoherent parts, similar to a phenomenon well known in the field of multiple scattering. For models of crystalline particles of arbitrary shapes used in this work, the coherent part forms a coherent backscattering peak, whose angular dimensions are approximately equal to the ratio of wavelength/(particle size). The incoherent part is close to smooth geometrical optical solutions.

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Natalia V. Kustova, Victor A. Shishko, Alexander V. Konoshonkin, Dmitry N. Timofeev, and Anatoly G. Borovoi "The coherent and incoherent light scattering in the vicinity of backscattering direction on the particles of cirrus clouds", Proc. SPIE 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 115605D (12 November 2020); https://doi.org/10.1117/12.2576394

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