Volume 114, Number 5, June 2016
|Number of page(s)||6|
|Section||Physics of Gases, Plasmas and Electric Discharges|
|Published online||01 July 2016|
Wake turbulence observed behind an upstream “extra” particle in a 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 College of Science, Donghua University - Shanghai 201620, PRC
4 BMSTU Centre for Plasma Science and Technology - Moscow, Russia
Received: 2 May 2016
Accepted: 3 June 2016
An interaction of upstream extra particles with a monolayer highly ordered complex plasma is studied. A principally new abnormal turbulent wake formed behind the supersonic upstream particle is discovered. An anomalous type of the turbulence wake clearly manifests in anomalously low thermal diffusivity and two orders of magnitude larger particle kinetic temperature compared to that of the “normal” wake (Mach cone) observed by Du et al. (EPL, 99 (2012) 55001).
PACS: 52.27.Lw – Dusty or complex plasmas; plasma crystals / 52.35.Ra – Plasma turbulence
© EPLA, 2016
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