A1 Journal article (refereed)
How much is enough? : The convergence of finite sample scattering properties to those of infinite media (2021)

Penttilä, A., Markkanen, J., Väisänen, T., Räbinä, J., Yurkin, M. A., & Muinonen, K. (2021). How much is enough? : The convergence of finite sample scattering properties to those of infinite media. Journal of Quantitative Spectroscopy and Radiative Transfer, 262, Article 107524. https://doi.org/10.1016/j.jqsrt.2021.107524

JYU authors or editors

Publication details

All authors or editors: Penttilä, Antti; Markkanen, Johannes; Väisänen, Timo; Räbinä, Jukka; Yurkin, Maxim A.; Muinonen, Karri

Journal or series: Journal of Quantitative Spectroscopy and Radiative Transfer

ISSN: 0022-4073

eISSN: 1879-1352

Publication year: 2021

Volume: 262

Article number: 107524

Publisher: Elsevier

Publication country: United Kingdom

Publication language: English

DOI: https://doi.org/10.1016/j.jqsrt.2021.107524

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/73885

Abstract

We study the scattering properties of a cloud of particles. The particles are spherical, close to the incident wavelength in size, have a high albedo, and are randomly packed to 20 % volume density. We show, using both numerically exact methods for solving the Maxwell equations and radiative-transfer-approximation methods, that the scattering properties of the cloud converge after about ten million particles in the system. After that, the backward-scattered properties of the system should estimate the properties of a macroscopic, practically infinite system.

Keywords: fine particles; optical properties; scattering (physics); Maxwell equations; approximation; computational science

Free keywords: scattering; particulate random media; radiative transfer; Maxwell equations

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2021

JUFO rating: 1