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Influence of Acoustic Waves on Plasma Column Properties

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Acoustic waves directed along a discharge plasma column are shown to cause its stratification. It is shown that with an increase in the acoustic wave intensity, the electron concentration decreases in the compressive layers and increases in the rarified layers. Stratification occurs when the ionization frequency is higher than the wave frequency.


Es wird gezeigt, daß Schallwellen, die sich entlang der Plasmasäule in einer Gasentladung ausbreiten, eine Schichtung hervorrufen. Dabei ergibt sich, daß mit zunehmender Schallintensität die Elektronenkonzentration in den verdichteten Bereichen abnimmt und in den verdünnten Schichten zunimmt. Die Schichten bilden sich aus, wenn die Ionisationsfrequenz höher als die Schallfrequenz ist.


On démontre que la présence d'une onde acoustique se propageant le long d'une colonne de plasma produit sa stratification. Avec l'accroissement de l'intensité acoustique, la concentration des électrons du plasma diminue dans les couches comprimées et augmente dans les couches raréfiées. Cette stratification intervient lorsque la fréquence d'ionisation est plus grande que la fréquence de l'onde acoustique.
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Document Type: Research Article

Publication date: September 1, 1989

More about this publication?
  • 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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