Propagation of Electromagnetic Waves on a Rectangular Lattice of Polarizable Points

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dc.creatorGutkowicz-Krusin, D.
dc.creatorDraine, B. T.
dc.date2004-03-03
dc.date.accessioned2026-07-07T02:12:28Z
dc.date.available2026-07-07T02:12:28Z
dc.descriptionWe discuss the propagation of electromagnetic waves on a rectangular lattice of polarizable point dipoles. For wavelengths long compared to the lattice spacing, we obtain the dispersion relation in terms of the lattice spacing and the dipole polarizabilities. We also obtain the polarizabilities required for the lattice to have the same dispersion relation as a continuum medium of given refractive index m.; our result differs slightly from previous work by Draine & Goodman (1993). Our new prescription can be used to assign dipole polarizabilities when the discrete dipole approximation is used to study scattering by finite targets. Results are shown for selected cases.
dc.description17 pages, 5 figures, Latex
dc.identifierhttps://arxiv.org/abs/astro-ph/0403082
dc.identifierhttp://arxiv.org/abs/astro-ph/0403082
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/7466
dc.subjectAstrophysics
dc.titlePropagation of Electromagnetic Waves on a Rectangular Lattice of Polarizable Points
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