Sonoluminescence and phase diagrams of single bubbles at low dissolved air concentrations

Simon, Gábor; Csabai, István; Horváth, Áron; Szalai, Ferenc

doi:10.1103/physreve.63.026301

Cited by 18 publications

(10 citation statements)

References 41 publications

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“…Very recently, Simon et al (2001) confirmed that lightemitting bubbles follow the stable diffusive equilibrium curves based on argon concentration alone (see Fig. 34).…”

Section: Bubble Equilibria With Chemical Reactionsmentioning

confidence: 61%

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Single-bubble sonoluminescence

2002

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Single-bubble sonoluminescence occurs when an acoustically trapped and periodically driven gas bubble collapses so strongly that the energy focusing at collapse leads to light emission. Detailed experiments have demonstrated the unique properties of this system: the spectrum of the emitted light tends to peak in the ultraviolet and depends strongly on the type of gas dissolved in the liquid; small amounts of trace noble gases or other impurities can dramatically change the amount of light emission, which is also affected by small changes in other operating parameters (mainly forcing pressure, dissolved gas concentration, and liquid temperature). This article reviews experimental and theoretical efforts to understand this phenomenon. The currently available information favors a description of sonoluminescence caused by adiabatic heating of the bubble at collapse, leading to partial ionization of the gas inside the bubble and to thermal emission such as bremsstrahlung. After a brief historical review, the authors survey the major areas of research: Section II describes the classical theory of bubble dynamics, as developed by Rayleigh, Plesset, Prosperetti, and others, while Sec. III describes research on the gas dynamics inside the bubble. Shock waves inside the bubble do not seem to play a prominent role in the process. Section IV discusses the hydrodynamic and chemical stability of the bubble. Stable single-bubble sonoluminescence requires that the bubble be shape stable and diffusively stable, and, together with an energy focusing condition, this fixes the parameter space where light emission occurs. Section V describes experiments and models addressing the origin of the light emission. The final section presents an overview of what is known, and outlines some directions for future research. CONTENTS

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“…Very recently, Simon et al (2001) confirmed that lightemitting bubbles follow the stable diffusive equilibrium curves based on argon concentration alone (see Fig. 34).…”

Section: Bubble Equilibria With Chemical Reactionsmentioning

confidence: 61%

“…IV.C). Experimental phase diagrams in the c ϱ and P a phase space can be found in Simon et al (2001).…”

Section: E Interplay Of Diffusive Equilibria and Shape Instabilitiesmentioning

confidence: 99%

Single-bubble sonoluminescence

2002

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“…To ensure the bubble stabilities by changing the pressure amplitude, the bubble initial radius is changed [52]. It should be realized that in each case an appropriate phase diagram is used [53,54]. The achieved theoretical results are shown in Figs.…”

Section: Numerical Resultsmentioning

confidence: 98%

Quasiadiabatic approach for laser-induced single-bubble sonoluminescence

et al. 2012

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The luminescence parameters of laser-induced bubble in the presence of an acoustic field in water are studied. A comparison is made between parameters such as bubble radius, interior temperature, and pressure of the bubble induced by laser and an acoustic field influenced by different driving pressure amplitudes. It is found that the bubble volume induced by laser at the collapse instant is more than 10(6) times larger than the one induced by an acoustic field. It is also noticed, by increasing the driving pressure amplitude, the bubble radius decreases in both cases, however, the bubble interior pressure and temperature increase.

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“…In a previous study [16] we exploited this fact to develop a new technique to deduce P a , R 0 or R(t). Here we elaborate on our method in more detail, present its advantages and limitations and compare its results with Mie scattering.…”

Section: Introductionmentioning

confidence: 99%

Alternative method to deduce bubble dynamics in single-bubble sonoluminescence experiments

Simon

Levinsen²

2003

Phys. Rev. E

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In this paper we present an experimental approach that allows to deduce the important dynamical parameters of single sonoluminescing bubbles (pressure amplitude, ambient radius, radius-time curve) The technique is based on a few previously confirmed theoretical assumptions and requires the knowledge of quantities such as the amplitude of the electric excitation and the phase of the flashes in the acoustic period. These quantities are easily measurable by a digital oscilloscope, avoiding the cost of expensive lasers, or ultrafast cameras of previous methods. We show the technique on a particular example and compare the results with conventional Mie scattering. We find that within the experimental uncertainties these two techniques provide similar results.

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Sonoluminescence and phase diagrams of single bubbles at low dissolved air concentrations

Cited by 18 publications

References 41 publications

Single-bubble sonoluminescence

Single-bubble sonoluminescence

Quasiadiabatic approach for laser-induced single-bubble sonoluminescence

Alternative method to deduce bubble dynamics in single-bubble sonoluminescence experiments

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