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Complex Plasmas: A versatile system to study self-organization effects in strongly coupled systems on the microcanonical level

Räth, Christoph (2016) Complex Plasmas: A versatile system to study self-organization effects in strongly coupled systems on the microcanonical level. Perspectives in Nonlinear Dynamics 2016, 24.-29. Juli 2016, Berlin, Deutschland.

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Abstract

Complex (or “dusty”) plasmas consist of electrons, ions, charged, mostly monodisperse, microparticles, and a neutral gas background. When the dust particles are brought into the plasma they immediately charge up negatively and then interact via a Yukawa-like potential whereby the mean particle separation is typically 100 times the particle size. Therefore, the microparticles become individually visible. The interaction potential is also tunable by e.g. applying additional external electric fields and may become anisotropic, which leads to further interesting effects like mode-coupling or electrorheological plasmas. The first experimental observation of the theoretically predicted plasma crystal marked the beginning of numerous research activities in complex plasma physics to investigate strongly coupled systems. In this contribution we will present recent results obtained in our laboratories on the ground and on the International Space Station (ISS) under zero gravity conditions. We will focus on (a) lane formation as a prototypical non-equilibrium phase transition in open dissipative systems, (b) synchronization of two-dimensionally oscillating plasma crystals and (c) studies of (the onset of) turbulence on the microcanonical level. It will be outlined how the application of concepts from nonlinear data analysis is often crucial for understanding and interpreting the experimental and simulated data.

Item URL in elib:https://elib.dlr.de/106120/
Document Type:Conference or Workshop Item (Speech)
Title:Complex Plasmas: A versatile system to study self-organization effects in strongly coupled systems on the microcanonical level
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Räth, ChristophDLR Research Group Complex Plasma, OberpfaffenhofenUNSPECIFIED
Date:2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Accepted
Keywords:Complex plasmas, Self-organization, Lane formation, Synchronization, Turbulence
Event Title:Perspectives in Nonlinear Dynamics 2016
Event Location:Berlin, Deutschland
Event Type:international Conference
Event Dates:24.-29. Juli 2016
Organizer:Humboldt-Universität Berlin
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 / Data analysis, R - Komplexe Plasmen / Zero gravity
Location: Oberpfaffenhofen
Institutes and Institutions:Research Group Complex Plasma > Research Group Complex Plasma
Deposited By: Räth, Christoph
Deposited On:19 Sep 2016 15:47
Last Modified:19 Sep 2016 15:47

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