Far-field approximation in electromagnetic scattering |
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Authors: | Michael I Mishchenko |
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Institution: | NASA Goddard Institute for Space Studies, 2880 Broadway, New York, NY 10025, USA |
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Abstract: | The volume integral equation formalism is used to derive and analyze specific criteria of applicability of the far-field approximation in electromagnetic scattering by a finite three-dimensional object. In the case of wavelength-sized and larger objects, this analysis leads to a natural subdivision of the entire external space into a near-field zone, a transition zone, and a far-field zone. It is demonstrated that the general criteria of far-field scattering are consistent with the theory and practice of T-matrix computations. |
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Keywords: | Electromagnetic scattering Scattering by particles Far-field approximation |
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