aat Acta Astrophys. Tau. Acta Astrophysica Taurica 2712-925X Kiselev Nikolai Nikolaevich, Mosсow, settlement Moskovskii, Tat'yanin Park Str., 12, Moscow, Russia. RU 88 Magnetism and activity of the Sun and stars – 2021 Conference proceedings Scattering properties of spherical ice particles Petrov Dmitry Zhuzhulina Elena Crimean Astrophysical Observatory, Nauchny 298409 Crimean Astrophysical Observatory, Nauchny 298409 30 09 2024 5 3 1 5 27 09 2024 Copyright (c) 2024 Dmitry Petrov, Elena Zhuzhulina 2024 Dmitry Petrov, Elena Zhuzhulina The metadata for this submission is licensed under a Creative Commons Attribution 4.0 International License. Copyright and publishing rights for texts published in Acta Astrophysica Taurica is retained by the authors, with first publication rights granted to the journal.Texts are free to use with proper attribution and link to the licensing (Creative Commons Attribution 4.0 International).

Water ice is widespread in the Solar system. The sizes of water ice particles are distributed over a fairly wide range. However, computer modeling of light scattering by sufficiently large ice particles at the present stage of development of computer technology can only be realized in the approximation of geometrical optics. The question of the limiting size remains open, starting from which geometric optics begins to describe scattering properties well. In view of this, for a qualitative study of the scattering properties of ice particles, the Mie theory was used, which describes the scattering of light by an ideal sphere. In this work, we investigate the features of light scattering characteristics, such as intensity and polarization as well as photometric color, by large particles of water ice with a size of about 0.7 mm. The effect of the scattering particle size and the phase angle on the scattering properties of ice particles is studied. We determine  the minimum size of an ice spherical particle at which scattering can be described by the laws of geometric optics.

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