Verification the Umov effect on large irregular particles

Natalia V. Kustova; Ilya V. Tkachev; Alexander V. Konoshonkin; Dmitry N. Timofeev; Victor A. Shishko; Konstantin A. Shmirko

doi:10.1117/12.2603425

15 December 2021 Verification the Umov effect on large irregular particles

Natalia V. Kustova, Ilya V. Tkachev, Alexander V. Konoshonkin, Dmitry N. Timofeev, Victor A. Shishko, Konstantin A. Shmirko

Author Affiliations +

Proceedings Volume 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 119163W (2021) https://doi.org/10.1117/12.2603425
Event: 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2021, Moscow, Russian Federation

Abstract

The paper presents a solution to the problem of light scattering by randomly oriented particles of irregular shape for particles with sizes of 100, 140, 170 and 200 microns for a wavelength of 0.532 microns for various refractive indices. The solution was constructed both within the framework of physical optics (for the backward scattering direction) and geometric optics (for scattering angles in the range from 0 to 180 degrees). The obtained solutions made it possible to construct a diagram of the dependence of the geometric albedo of a particle on the maximum degree of polarization to verify the Umov effect. It was found that when the imaginary part of the refractive index is less than 0.001, the Umov effect is performed with good accuracy. However, for the case when the imaginary part of the refractive index is greater than 0.001 and the specular component of the scattered radiation begins to dominate in the solution, the Umov effect is violated.

Citation Download Citation

Natalia V. Kustova, Ilya V. Tkachev, Alexander V. Konoshonkin, Dmitry N. Timofeev, Victor A. Shishko, and Konstantin A. Shmirko "Verification the Umov effect on large irregular particles", Proc. SPIE 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 119163W (15 December 2021); https://doi.org/10.1117/12.2603425

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available