Vapor density measurements inside laser-induced cavitation bubbles

J. Hosek; W. Garen; Walter Neu; Hubert Schoenig; A. Hopfmueller

doi:10.1117/12.413775

30 January 2001 Vapor density measurements inside laser-induced cavitation bubbles

J. Hosek, W. Garen, Walter Neu, Hubert Schoenig, A. Hopfmueller

Proceedings Volume 4157, Laser-Assisted Microtechnology 2000; (2001) https://doi.org/10.1117/12.413775
Event: Laser-Assisted Microtechnology 2000, 2000, St. Petersburg-Pushkin, Russian Federation

Abstract

Cavitation bubbles generated in water by Tm:YAG laser pulses were studied. Timer-resolved photography was applied to determine volume change with time and surface velocities of expanding and collapsing cavitation bubbles. A new method of determining vapor densities inside bubbles based on reflection changes of a fiber probe placed inside the cavitation bubble has been developed. Density distribution changes with time were measured spatially at 17 points within the bubble. Maximum bubble diameter was about 4.5 mm. Densities measured were compared to the growth of the bubble as shown by ultra fast imaging. Temporal and spatial pressure and temperature distribution will be computed from density distributions based on equilibrium values at maximum bubble extension.

Citation Download Citation

J. Hosek, W. Garen, Walter Neu, Hubert Schoenig, and A. Hopfmueller "Vapor density measurements inside laser-induced cavitation bubbles", Proc. SPIE 4157, Laser-Assisted Microtechnology 2000, (30 January 2001); https://doi.org/10.1117/12.413775

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