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Turbulence in a complex plasma

Schwabe, Mierk and Zhdanov, Sergey and Räth, Christoph (2016) Turbulence in a complex plasma. 1. PK-4 Symposium, 21.-22. Nov. 2016, Weßling, Deutschland.

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Abstract

Complex or dusty plasmas are low temperature plasmas which contain micrometer-sized particles ("dust"). The microparticles obtain high charges and interact with each other, effectively forming a solid, liquid or gas state in which the microparticles take over the role of molecules in conventional systems. Complex plasmas often are in a turbulent state, for instance when instabilities like the "heartbeat" instability or intense waves are present. The movement of the microparticles, the carriers of the turbulent interactions in complex plasmas, can be directly followed, unlike that of atoms and molecules in conventional experiments on turbulence. Here we present results of an experiment on the development of turbulence in a complex plasma in the PK-3 Plus laboratory on board the International Space Station. The microparticle cloud was first stabilized against an instability. Once the stabilization was turned off, the cloud became unstable, and the movement of the particles became turbulent. In the report, we show how the energy spectra evolve during the development of turbulence. In the case of fully developed turbulence, the spectra display multiple cascades explaining well the transport of turbulent energy and enstrophy.

Item URL in elib:https://elib.dlr.de/108824/
Document Type:Conference or Workshop Item (Speech)
Title:Turbulence in a complex plasma
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schwabe, MierkMierk.Schwabe (at) dlr.dehttps://orcid.org/0000-0001-6565-5890
Zhdanov, Sergeysergey.zhdanov (at) dlr.deUNSPECIFIED
Räth, Christophdlr research group complex plasma, oberpfaffenhofenUNSPECIFIED
Date:22 November 2016
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Complex plasma, dusty plasma, turbulence, heartbeat instability
Event Title:1. PK-4 Symposium
Event Location:Weßling, Deutschland
Event Type:Workshop
Event Dates:21.-22. Nov. 2016
Organizer:DLR
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Komplexe Plasmen / Zero gravity
Location: Oberpfaffenhofen
Institutes and Institutions:Research Group Complex Plasma > Research Group Complex Plasma
Deposited By: Schwabe, Dr. Mierk
Deposited On:02 Dec 2016 14:40
Last Modified:31 Jul 2019 20:06

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