Surface-integral formulation for electromagnetic scattering in spheroidal coordinates

F. Michael Kahnert, Jakob J. Stamnes, Knut Stamnes

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

We derive surface-integral expressions for the Q matrices in spheroidal coordinates that allow us to compute the T matrix in spheroidal coordinates. This approach combines the advantages of the null-field method (also referred to as the extended boundary condition method) with those of the separation of variables method. For spheroidal particles we obtain explicit Q matrix expressions that display the expected symmetry properties and yield correct results in the spherical limit. Compared to surface-integral expressions for spheroids in spherical coordinates, our results are considerably simpler because the integrands do not contain radial functions.

Original languageEnglish
Pages (from-to)61-78
Number of pages18
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume77
Issue number1
DOIs
StatePublished - 15 Feb 2003

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