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Pulsed Ultrasonic Cavitation. Part III: Subharmonic 1/2 and Luminescence Thresholds in Different Gas-Water Systems

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The subharmonic ½ and luminescence thresholds have been analyzed by nearly steady irradiation in different gas-water systems. The luminescence threshold decreases monotonically with the increasing solubility of the gas in the water. The subharmonic ½ threshold can be correlated with the atomicity of the gas, and is a function of the product solubility in water, multiplied by the autodiffusion coefficient of the gas.


Die Schwellen für das Auftreten der ersten Subharmonischen und der Lumineszenz wurden bei nahezu stationärer Beschallung für verschiedene Gas-Wasser-Systeme untersucht. Die Lumineszenzschwelle nimmt monoton mit wachsender Löslichkeit des Gases in Wasser ab. Die Schwelle für die erste Subharmonische kann mit der atomaren Ordnungszahl des Gases korreliert werden und ist eine Funktion der Lösbarkeit in Wasser, multipliziert mit dem Autodiffusionskoeffizienten des Gases.


On a mesuré et discuté le seuil de production du sous-harmonique ½ et celui de la sonoluminescence pour une irradiation ultrasonique quasi-permanente de différents systèmes eau-gaz. Le seuil de la luminescence décroît monotone avec l'augmentation de la solubilité des gaz dans l'eau. Quant au seuil du sous-harmonique ½, on peut le corréler avec l'atomicité du gaz: c'est une function du produit du coefficient de solubilité du gaz dans l'eau multiplié par le coefficient d'autodiffusion du gaz.
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Document Type: Research Article

Publication date: September 1, 1989

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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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