Abstract
The general solution of Ford and Werner for the scattering and absorption of a plane electromagnetic wave by a gyrotropic sphere is analyzed in the long-wavelength limit. An expression is obtained for the extinction cross section which includes the electric dipole term as well as the magnetic dipole and electric quadrupole terms, which are coupled. The results agree with the Mie solution in the limit of vanishing gyrotropy. The expressions are applied to a lossless single-component plasma sphere. Agreement is obtained with recent work based on a quasistatic approximation.
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