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Mechanism of Low-Threshold Hypersonic Cavitation Stimulated by Broadband Laser Pump

Bunkin, N; Lobeyev, A; Lyakhov, G; Ninham, Barry


The excitation of hypersonic waves prompted by a stimulated Brillouin scattering (SBS) mechanism was investigated for low threshold acoustic cavitation. The efficiency of SBS in prompting hypersonic wave excitation declines when there is a shift from practically monochromatic pumping to broadband pumping. Cavitation was observed at low intensities of acoustic pressure. This observation is attributed to the presence of fixed sized nanobubbles in the liquid.

CollectionsANU Research Publications
Date published: 1999
Type: Journal article
Source: Physical Review E


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