Quantum Optical Heating in Sonoluminescence Experiments

Details Quantum Optical Heating in Sonoluminescence Experiments Quantum Optical Heating in Sonoluminescence Experiments

2009-04-07

arxiv.org/abs/0904.1121v1

AIP Conf.Proc.1114:31-36,2009

Physics

Condensed Matter

Other Condensed Matter

6 pages, 2 figures, Proceedings of the Workshop Non-Neutral Plasma Physics VII 2008 in New York

Scientific paper

10.1063/1.3122287

Sonoluminescence occurs when tiny bubbles rilled with noble gas atoms are driven by a sound wave. Each cycle of the driving field is accompanied by a collapse phase in which the bubble radius decreases rapidly until a short but very strong light flash is emitted. The spectrum of the light corresponds to very high temperatures and hints at the presence of a hot plasma core. While everyone accepts that the effect is real, the main energy focussing mechanism is highly controversial. Here we suggest that the heating of the bubble might be due to a weak but highly inhomogeneous electric field as it occurs during rapid bubble deformations [A. Kurcz et al. (submitted)]. It is shown that such a field couples the quantised motion of the atoms to their electronic states, thereby resulting in very high heating rates.

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