Abstract
The laws of sonoluminescence generation under the interaction of ultrasonic fields widely differing in frequency have been investigated. It is shown that nonadditive amplification of the sonoluminescence is observed not only under the simultaneous action of the fields on a liquid, but also in a high‐frequency field after preliminary insonification of the liquid by a low‐frequency field. The phenomenon of a long‐duration aftereffect of the low‐frequency field on the cavitation generated by the high‐frequency field has been revealed. On the basis of the obtained results the conclusion has been drawn that the main mechanism of increasing the cavitation activity in the interacting fields is the generation of new cavitation nuclei as a result of the collapse of bubbles excited by the low‐frequency field.
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