Nonlinear dislocation dynamics and crystal sonoluminescence
Ju. M. Khalack, V. M. Loktev, A. B. Nadtochii, I. V. Ostrovskii, H. -G. Walter
Abstract
The sonoluminescence of ionic semiconductors were studied. The main attention is paid to threshold phenomena which accompany the light irradiation, namely --- point defect creation and nonlinear ultrasound wave attenuation. The model for description of processes under investigation which connects the sonoluminescence excitation with the onset of point defects (vacancies and intersticials) generation by moving under ultrasound action screw dislocation with a jog. The attempt is made to estimate the parameters of crystals which define the jog motion in its cristal relief.
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