Second Mode of Recycling together with Period Doubling Links Single-Bubble and Multibubble Sonoluminescence

Dam, Jeppe Seidelin; Levinsen, Mogens T.

doi:10.1103/physrevlett.94.174301

Cited by 8 publications

(11 citation statements)

References 15 publications

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“…Taking into account the characteristics of the recycling mode, specifically, the existence of a period doubling in SL amplitude and correlated spatial anisotropy, 11 and the pinch off of the bubble in fragments, 10,11 we associated the onset of this phenomenon to a nonspherical acoustic pressure perturbation.…”

Section: Discussionmentioning

confidence: 99%

“…In type 2, instead, the instability threshold is reached before the burn off becomes efficient and, therefore, the bubble is mostly air filled. 10 Dam and Levinsen 10 observed that both types of recycling modes are preceded by a period doubling in the amplitude of SL. This fact and the spatial anisotropy in the flashes are indications that the instability would be instigated by a nonspherical perturbation.…”

Section: Introductionmentioning

confidence: 98%

“…Type 2 is similar to type 1, but the maximum intensity is tenfold smaller and has a colder spectrum than stable sonoluminescence ͑SL͒. 10 Those modes of recycling are related to a bubble pinch off and formation of multiple fragments. These fragments can dissolve or recombine to form a new bubble with a renewed intake of air.…”

Section: Introductionmentioning

confidence: 99%

“…4,5,10,11 Furthermore, it has been divided into two types depending on the temporal pattern. Type 1 is associated with a sudden drop in intensity and time of collapse, followed by a slow increase of both quantities in the order of seconds.…”

Section: Introductionmentioning

confidence: 99%

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Experimental study of transient paths to the extinction in sonoluminescence

Urteaga

Dellavale

Puente

et al. 2008

The Journal of the Acoustical Society of America

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An experimental study of the extinction threshold of single bubble sonoluminescence in an air-water system is presented. Different runs from 5% to 100% of air concentrations were performed at room pressure and temperature. The intensity of sonoluminescence (SL) and time of collapse (t(c)) with respect to the driving were measured while the acoustic pressure was linearly increased from the onset of SL until the bubble extinction. The experimental data were compared with theoretical predictions for shape and position instability thresholds. It was found that the extinction of the bubble is determined by different mechanisms depending on the air concentration. For concentrations greater than approximately 30%-40% with respect to the saturation, the parametric instability limits the maximum value of R(0) that can be reached. On the other hand, for lower concentrations, the extinction appears as a limitation in the time of collapse. Two different mechanisms emerge in this range, i.e., the Bjerknes force and the Rayleigh-Taylor instability. The bubble acoustic emission produces backreaction on the bubble itself. This effect occurs in both mechanisms and is essential for the correct prediction of the extinction threshold in the case of low air dissolved concentration.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental study of transient paths to the extinction in sonoluminescence

Urteaga

Dellavale

Puente

et al. 2008

The Journal of the Acoustical Society of America

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“…In [105][106][107][108], a spatial anisotropy of radiation was observed. The authors believe that the effect is caused by the instability of the bubble shape, namely, its devi ation from a spherical shape at the last stage of col lapse.…”

Section: Size Of Source: Anisotropy Of Radiationmentioning

confidence: 98%

Sonoluminescence: Experiments and models (Review)

Borisenok

2015

Acoust. Phys.

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Three models of the sonoluminescence source formation are considered: the shock free compres sion model, the shock wave model, and the polarization model. Each of them is tested by experimental data on the size of the radiating region and the angular radiation pattern; the shape and duration of the radiation pulse; the influence of the type of liquid, gas composition, surfactants, sound frequency, and temperature of the liquid on the radiation intensity; the characteristics of the shock wave in the liquid; and the radiation spec tra. It is shown that the most adequate qualitative explanation of the entire set of experimental data is given by the polarization model. Methods for verifying the model are proposed. Publications devoted to studying the possibility a thermonuclear fusion reaction in a cavitation system are reviewed.

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