The Timing of Sonoluminescence

Details The Timing of Sonoluminescence The Timing of Sonoluminescence

2011-11-21

arxiv.org/abs/1111.5229v2

Physics

General Physics

12 pages, 10 figures

Scientific paper

We measured the timing of sonoluminescence by observing laser light scattered from a sonoluminescing bubble. We performed this measurement on 17.8 kHz, 13.28 kHz and 7920 Hz systems and found that the flash typically occurs 100 nanoseconds before the minimum radius, contrary to previous claims that the flash always occurs within a nanosecond of the minimum radius. These results imply that hot models of sonoluminescence, which require the flash to occur within a nanosecond of the minimum radius, are wrong. We propose a new model: that the flash results from the discharge of an excited cold condensate, formed during the adiabatic expansion of the bubble.

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