Laser-Induced Bubbles in Glycerol-Water Mixtures
نویسندگان
چکیده
In order to study the effect of viscosity on bubbles in a cavitating fluid, the properties of laser-induced bubbles and the resulting luminescence pulses are examined for various glycerol-water mixtures over 1-8 bars of pressure. Bubbles are generated by a Nd:YAG laser, with the bubble radius monitored by a laser-beam photodiode system and the luminescence structure measured by fast photomultiplier. Observable luminescence disappears at 75% volume glycerol solution, and luminescence is found to be more common at higher pressures and lower glycerol concentrations. The bubbles are seen to oscillate more in the glycerol mixtures than in water, and the maximum radius of the bubble appears to decrease with concentration.
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