Robert Mettin: abstract Biarritz ESS7 Ultrasonics-Sonochemistry

Observation of acoustic cavitation bubbles at 2250 frames per second

S. Luther, R. Mettin, P. Koch, and W. Lauterborn

Drittes Physikalisches Institut, Universität Göttingen,
Bürgerstraße 42-44, D-37073 Göttingen, Germany


Abstract

Acoustically induced cavitation at 20 kHz is observed by means of high speed CCD recording at a framerate of 2250 per second. Using digital image processing the bubbles' trajectories are reconstructed. The experimental data reveal that collision and coalescence of bubbles is a predominant phenomenon that limits their individual lifetime. Measurements of bubble sizes and velocities are in agreement with previous results.


Ultrasonics Sonochemistry 8, 159-162 (2001).


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