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

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Article number107524
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume262
DOIs
Publication statusPublished - Mar 2021

Keywords

  • Maxwell equations
  • Particulate random media
  • Radiative transfer
  • Scattering

OECD FOS+WOS

  • 1.03.UH PHYSICS, ATOMIC, MOLECULAR & CHEMICAL
  • 1.03.SY OPTICS
  • 2.11.XQ SPECTROSCOPY

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