Decay functions in the presence of fast (e.g. distortion) polarization

Abstract

The decay functions of isolated and immersed dielectric spheres have been calculated for the case when the polarization consists of two components, one 'fast' and the other having decay time T. It is found that after an initial, almost instantaneous, fall the moment of an isolated dielectric sphere decays exponentially with decay time ( epsilon infinity +2)T/( epsilon s+2), while the decay function of the immersed dielectric sphere has a dominant term proportional to exp(-t/T) and a smaller term proportional to exp(- epsilon st/ epsilon infinity T). The dominance of the former term means that the decay of the moment of the immersed sphere is similar to that of the polarization.