PHONON DRAG OF DISLOCATIONS IN KCl CRYSTALS WITH VARIOUS DISLOCATION STRUCTURE STATES

The pulsed technique has been used to study a dislocation resonance under the ultrasound absorption in KCl crystals with the residual strain epsilon = 0.17 divided by 1.8%, in the frequency range of 7 : 5 232.5 MHz, and at room temperature. The analysis of the data obtained testifies that a variation of the dislocation structure parameters gives rise to a substantial modification of the frequency and amplitude localizations of the dislocation resonance, whereas the damping factor B remains unchanged. The theoretical estimations of the factor B are in good agreement with the obtained experimental results.