How much is enough? The convergence of finite sample scattering properties to those of infinite media

Antti Penttilä; Johannes Markkanen; Timo Väisänen; Jukka Räbinä; Maxim A. Yurkin; Karri Muinonen

doi:10.1016/j.jqsrt.2021.107524

How much is enough? The convergence of finite sample scattering properties to those of infinite media

Antti Penttilä, Johannes Markkanen, Timo Väisänen, Jukka Räbinä, Maxim A. Yurkin, Karri Muinonen

Результат исследования: Научные публикации в периодических изданиях › статья › рецензирование

Аннотация

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.

Язык оригинала	английский
Номер статьи	107524
Журнал	Journal of Quantitative Spectroscopy and Radiative Transfer
Том	262
DOI	https://doi.org/10.1016/j.jqsrt.2021.107524
Состояние	Опубликовано - мар 2021

Предметные области OECD FOS+WOS

1.03.UH ФИЗИКА, АТОМНАЯ, МОЛЕКУЛЯРНАЯ И ХИМИЧЕСКАЯ
1.03.SY ОПТИКА
2.11.XQ СПЕКТРОСКОПИЯ

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10.1016/j.jqsrt.2021.107524

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How much is enough? The convergence of finite sample scattering properties to those of infinite media. / Penttilä, Antti; Markkanen, Johannes; Väisänen, Timo; Räbinä, Jukka; Yurkin, Maxim A.; Muinonen, Karri.

В: Journal of Quantitative Spectroscopy and Radiative Transfer, Том 262, 107524, 03.2021.

Результат исследования: Научные публикации в периодических изданиях › статья › рецензирование

TY - JOUR

T1 - How much is enough? The convergence of finite sample scattering properties to those of infinite media

AU - Penttilä, Antti

AU - Markkanen, Johannes

AU - Väisänen, Timo

AU - Räbinä, Jukka

AU - Yurkin, Maxim A.

AU - Muinonen, Karri

PY - 2021/3

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AB - 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.

KW - Maxwell equations

KW - Particulate random media

KW - Radiative transfer

KW - Scattering

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