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Synchronization of particle motion in compressed two-dimensional plasma crystals

Laut, Ingo and Räth, Christoph and Zhdanov, Sergey K. and Nosenko, Vladimir and Couedel, L. and Thomas, Hubertus (2016) Synchronization of particle motion in compressed two-dimensional plasma crystals. DPG-Frühjahrstagung Regensburg 2016, 6.-11.03.2016, Regensburg. (Unpublished)

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Two-dimensional complex plasma crystals are an ideal model system to study dynamic processes on the kinetic level. Recently, synchronized motion of alternating in-phase and anti-phase particle lines was observed during the so-called mode-coupling instability (MCI), where the out-of-plane wave mode of the crystal couples to the longitudinal mode. While MCI is equally strong in three directions for an ideal hexagonal lattice, it was observed in only two directions in the experiment. Here, we demonstrate with molecular dynamics simulations that an asymmetry in the horizontal confinement of the plasma crystal can cause this anisotropic ignition of MCI. The confinement asymmetry leads to a deformation of the hexagonal lattice that is typically observed in experiments. The instability is accompanied by synchronized particle motion that is characterized by a new order parameter. This order parameter is sensitive to the explicit direction-dependency of the synchronization pattern.

Item URL in elib:https://elib.dlr.de/103739/
Document Type:Conference or Workshop Item (Speech)
Title:Synchronization of particle motion in compressed two-dimensional plasma crystals
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Laut, IngoDLR Research Group Complex Plasma, OberpfaffenhofenUNSPECIFIED
Räth, ChristophDLR Research Group Complex Plasma, OberpfaffenhofenUNSPECIFIED
Zhdanov, Sergey K.Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, GermanyUNSPECIFIED
Nosenko, VladimirDLR Research Group Complex Plasma, OberpfaffenhofenUNSPECIFIED
Couedel, L.CNRS, Universite d’Aix-MarseilleUNSPECIFIED
Thomas, HubertusDLR Research Group Complex Plasma, OberpfaffenhofenUNSPECIFIED
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:dusty Plasma, synchronization
Event Title:DPG-Frühjahrstagung Regensburg 2016
Event Location:Regensburg
Event Type:international Conference
Event Dates:6.-11.03.2016
Organizer:Deutsche Physikalische Gesellschaft
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 / Theory, Simulation
Location: Oberpfaffenhofen
Institutes and Institutions:Research Group Complex Plasma
Deposited By: Laut, Ingo
Deposited On:20 Sep 2016 13:56
Last Modified:31 Jul 2019 20:00

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