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Abstract
The propagation of the electromagnetic signals generated by localized electromagnetic current distributions in perfect crystals is analyzed under the hypotheses that dispersion and magnetic anisotropy are negligible and all wavelengths are large compared with interatomic distances. The signal fields are shown to converge asymptotically in energy, for t→∞;, to the sum of two waves which propagate outward from the source region with the group velocities of the crystal. The polarizations and waveforms of these waves are calculated explicitly in terms of the crystal parameters and the source field.
†This research was supported by the Office of Naval Research. Reproduction in whole or part is permitted for any purpose of the United States Government.
†This research was supported by the Office of Naval Research. Reproduction in whole or part is permitted for any purpose of the United States Government.
Notes
†This research was supported by the Office of Naval Research. Reproduction in whole or part is permitted for any purpose of the United States Government.