Abstract

It is shown that the cross section for scattering in the long-wavelength limit from a lossy dielectric sphere varies as λ<sup>-2</sup> and not as λ<sup>-1</sup>, as is suggested in standard treatments of the subject. The λ<sup>-1</sup> variation is in conflict with the analytic properties of the scattering amplitudes as a function of <i>k</i> = 2πλ<sup>-1</sup>, and this conflict is resolved when the wavelength dependence of the dielectric constant is taken into account.

© 1982 Optical Society of America

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