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Coupling of non-crossing wave modes in a two-dimensional plasma crystal

Meyer, John and Laut, Ingo and Zhdanov, Sergey and Nosenko, Volodymyr and Thomas, Hubertus M. (2017) Coupling of non-crossing wave modes in a two-dimensional plasma crystal. Physical Review Letters, 119 (25). American Physical Society. DOI: 10.1103/PhysRevLett.119.255001 ISSN 0031-9007

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Official URL: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.119.255001

Abstract

We report an experimental observation of the coupling of the transverse vertical and longitudinal in-plane dust-lattice wave modes in a two-dimensional complex plasma crystal in the absence of mode crossing. A new large-diameter rf plasma chamber was used to suspend the plasma crystal. The observations are confirmed with molecular dynamics simulations. The coupling manifests itself in traces of the transverse vertical mode appearing in the measured longitudinal spectra and vice versa. We calculate the expected ratio of the trace to the principal mode with a theoretical analysis of the modes in a crystal with finite temperature and find good agreement with the experiment and simulations.

Item URL in elib:https://elib.dlr.de/119250/
Document Type:Article
Title:Coupling of non-crossing wave modes in a two-dimensional plasma crystal
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Meyer, JohnJohn.Meyer (at) dlr.deUNSPECIFIED
Laut, IngoIngo.Laut (at) dlr.deUNSPECIFIED
Zhdanov, SergeySergey.Zhdanov (at) dlr.deUNSPECIFIED
Nosenko, VolodymyrV.Nosenko (at) dlr.deUNSPECIFIED
Thomas, Hubertus M.Hubertus.Thomas (at) dlr.dehttps://orcid.org/0000-0001-8358-2023
Date:19 December 2017
Journal or Publication Title:Physical Review Letters
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:119
DOI :10.1103/PhysRevLett.119.255001
Publisher:American Physical Society
ISSN:0031-9007
Status:Published
Keywords:Experiment Plasma Crystal wave coupling wake mode crossing
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 / Laboratory research, R - Komplexe Plasmen / Theory, Simulation
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Materials Physics in Space > Research Group Complex Plasma
Deposited By: Meyer, John
Deposited On:16 Mar 2018 10:03
Last Modified:31 Jul 2019 20:16

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