Abstract
The problem of electromagnetic emission of an edge dislocation segment moving in an ionic lattice with a NaCl-type structure is considered. The proposed mechanism of electromagnetic emission is associated with the appearance of macroscopic alternating polarization currents along the extraplane edge of the edge dislocation in the course of its motion between adjacent valleys of the Peierls relief. The relationships for electro-magnetic radiation fields of an arbitrarily moving segment are derived, and the problem of electromagnetic emission of a segment that executes harmonic oscillations in the field of an external quasi-stationary elastic wave with a frequency Open image in new window (where l is the segment length and c is the velocity of sound) is treated in detail. The power of the emitted electromagnetic signal and the “acoustoelectromagnetic transformation” coefficient (the ratio between the electromagnetic radiation power and the mechanical power required for setting the segment in motion) are determined.
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