Electromagnetic emissions from an edge dislocation segment, moving in an ionic lattice with a NaCl-type structure, were considered. A suggested mechanism of electromagnetic emission was associated with the appearance of macroscopic alternating polarization currents along the extra-plane edge of the edge dislocation during its motion between adjacent valleys of the Peierls relief. The relationships for the electromagnetic radiation fields of an arbitrarily moving segment were derived. The case of the electromagnetic emission, from a segment that underwent harmonic oscillations in the field of an external quasi-stationary elastic wave (with a frequency far below c/l, where l was the segment length and c was the velocity of sound), was treated in detail. The power of the emitted electromagnetic signal, and the so-called acousto-electromagnetic transformation coefficient (the ratio of the electromagnetic radiation power to the mechanical power required to set the segment in motion), were determined.

Electromagnetic Emission of Mobile Dislocation Segments in an Ionic Crystal. O.V.Charkina, K.A.Chishko: Physics of the Solid State, 2001, 43[10], 1898-904