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Anisotropy and synchronization during the mode-coupling instability

Laut, Ingo (2016) Anisotropy and synchronization during the mode-coupling instability. PROCOPE meeting, 9.-13. Mai 2016, Marseille, Frankreich. (Unpublished)

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Abstract

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/108252/
Document Type:Conference or Workshop Item (Speech)
Title:Anisotropy and synchronization during the mode-coupling instability
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Laut, IngoIngo.Laut (at) dlr.deUNSPECIFIED
Date:2016
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Unpublished
Keywords:dusty plasma, synchronization
Event Title:PROCOPE meeting
Event Location:Marseille, Frankreich
Event Type:international Conference
Event Dates:9.-13. Mai 2016
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 > Research Group Complex Plasma
Deposited By: Laut, Ingo
Deposited On:28 Nov 2016 08:47
Last Modified:28 Nov 2016 08:47

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