Study into Correlation between the Ultrasonic Capillary Effect and Sonoluminescence

Abstract

The correlation between the phenomena of luminescence generation in the cavitation region (sonoluminescence) and increase of the height and velocity of liquid rise in a capillary under the action of ultrasound (ultrasonic capillary effect) has been investigated. It is shown that with small gaps between the capillary and emitter the thresholds of these effects, i.e., minimum values of the amplitude of oscillations at which they originate, virtually coincide. Variation of the parameters which leads to an increase in the intensity of sonoluminescence results in increase of the ultrasonic capillary effect. The results obtained confirm the hypothesis of the cavitation nature of the ultrasonic capillary effect and indicate the possibility of using a capillary as an indicator of activity of acoustic cavitation.