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A T matrix method based upon scalar basis functions

D. W. Mackowski ; Michael Kahnert (Institutionen för rymd- och geovetenskap, Global miljömätteknik och modellering) ; M. I. Mishchenko
Journal of Quantitative Spectroscopy and Radiative Transfer (0022-4073). Vol. 123 (2013), p. 113-121.
[Artikel, refereegranskad vetenskaplig]

A surface integral formulation is developed for the T matrix of a homogenous and isotropic particle of arbitrary shape, which employs scalar basis functions represented by the translation matrix elements of the vector spherical wave functions. The formulation begins with the volume integral equation for scattering by the particle, which is transformed so that the vector and dyadic components in the equation are replaced with associated dipole and multipole level scalar harmonic wave functions. The approach leads to a volume integral formulation for the T matrix, which can be extended, by the use of Green's identities, to the surface integral formulation. The result is shown to be equivalent to the traditional surface integral formulas based on the VSWF basis.

Nyckelord: Electromagnetic scattering, T matrix method, Volume integral equation formulation, Vector spherical, discrete-dipole approximation, electromagnetic scattering



Denna post skapades 2013-06-27. Senast ändrad 2014-02-03.
CPL Pubid: 179404

 

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Institutioner (Chalmers)

Institutionen för rymd- och geovetenskap, Global miljömätteknik och modellering (2010-2017)

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Spektroskopi

Chalmers infrastruktur

 


Projekt

Denna publikation är ett resultat av följande projekt:


Aerosol Optics in Global Earth System Modelling (AGES) (VR//2011-3346)