Volume 110, Number 3, May 2015
|Number of page(s)||6|
|Section||Physics of Gases, Plasmas and Electric Discharges|
|Published online||22 May 2015|
Wave turbulence observed in an auto-oscillating complex (dusty) plasma
1 Max Planck Institute for extraterrestrial Physics - PO Box 1312, Giessenbachstr., 85741 Garching, Germany
2 Forschungsgruppe Komplexe Plasmen, Deutsches Zentrum für Luft- und Raumfahrt Oberpfaffenhofen, Germany
3 BMSTU Centre for Plasma Science and Technology - Moscow, Russia
Received: 3 March 2015
Accepted: 30 April 2015
We study a complex plasma under microgravity conditions that is auto-oscillating due to a heartbeat instability and contains quasi-solitary wave ridges —oscillons. We demonstrate that this system can serve as a nearly ideal model system to mimic weak Kolmogorov-Zakharov–type wave turbulence. The slopes of the structure functions agree reasonably well with power laws assuming extended self-similarity. The energy spectrum displays multiple cascades, which we attribute to the influence of friction, the heartbeat instability and a modulational instability.
PACS: 52.27.Lw – Dusty or complex plasmas; plasma crystals / 52.35.Ra – Plasma turbulence
© EPLA, 2015
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