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Über den Zusammenhang zwisdien der Sonolumineszenz und der Sdiwingungskavitation in Flüssigkeiten

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In the first part of this investigation a relation is established between the emission of flashes of sonoluminescence light and the implosions of cavitation bubbles. Shock waves radiated into the liquid from collapsing bubbles are used as indicators for the implosions. They are detected by two different methods. Cavitation was generated by acoustic irradiation of the test liquid (glycerol, ethylen glycol etc.) at 2.4 kc/s. The experiments reveal unequivocally that the emission of light occurs during the last stages of the implosion of the bubbles.

The second part of the study describes the observation of sonoluminescence in mercury by means of a transparent mechanical oscillator vibrating at 25 kc/s. Here the sonoluminescence, which is very bright in mercury, displays the same characteristics as in other liquids.

Finally the various interpretations of the phenomenon are again discussed and compared with experimental evidence. The latter indicate unequivocally, that sonoluminescence is caused by the (almost) adiabatic compression and heating of the gas contained in the cavitation bubbles during the implosion.
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Document Type: Research Article

Publication date: January 1, 1962

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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