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Fast superposition T-matrix solution for clusters with arbitrary-shaped constituent particles

Published

Author(s)

Johannes Markkanen, Alex Yuffa

Abstract

A fast superposition T-matrix solution is formulated for electromagnetic scattering by a collection of arbitrary-shaped inhomogeneous particles. The T-matrices for individual constituents are computed by expanding the Green's dyadic in the spherical vector wave functions and formulating a volume integral equation where the equivalent electric current is the unknown and the spherical vector wave functions are treated as excitations. Furthermore, the volume integral equation and the superposition T-matrix are accelerated by the precorrected-FFT algorithm and the fast multipole algorithm, respectively. The approach allows for an efficient scattering analysis of the clusters and aggregates consisting of a large number of arbitrary-shaped inhomogeneous particles.
Citation
Journal of Quantitative Spectroscopy and Radiative Transfer

Keywords

Electromagnetic scattering, multiple scattering, T-matrix, volume integral equation

Citation

Markkanen, J. and Yuffa, A. (2017), Fast superposition T-matrix solution for clusters with arbitrary-shaped constituent particles, Journal of Quantitative Spectroscopy and Radiative Transfer, [online], https://doi.org/10.1016/j.jqsrt.2016.11.004, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=921892 (Accessed May 20, 2024)

Issues

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Created February 28, 2017, Updated October 12, 2021