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Shock Wave Emissions of a Sonoluminescing Bubble

Joachim Holzfuss·Matthias Ruggeberg·Andreas Billo
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Abstract

A single bubble in water is excited by a standing ultrasound wave. At high intensity the bubble starts to emit light. Together with the emitted light pulse, a shock wave is generated in the liquid at collapse time. The time-dependent velocity of the outward-travelling shock is measured with an imaging technique. The pressure in the shock and in the bubble is shown to have a lower limit of 5500 bars. Visualization of the shock and the bubble at different phases of the acoustic cycle reveals previously unobserved dynamics during stable and unstable sonoluminescence.

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Joachim Holzfuss, Matthias Ruggeberg, Andreas Billo. 1998-11-24. Shock Wave Emissions of a Sonoluminescing Bubble. https://doi.org/10.1103/physrevlett.81.5434

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