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Dynamics of spinning particle pairs in a single-layer complex plasma crystal

Nosenko, V. and Zhdanov, Sergey and Thomas, Hubertus and Carmona-Reyes, J. and Hyde, T. W. (2017) Dynamics of spinning particle pairs in a single-layer complex plasma crystal. Physical Review E, 96, 011201-1. American Physical Society. doi: 10.1103/PhysRevE.96.011201. ISSN 2470-0045.

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Official URL: https://journals.aps.org/pre/abstract/10.1103/PhysRevE.96.011201


Spontaneous formation of spinning pairs of particles, or torsions was studied in a single-layer complex plasma crystal by reducing the discharge power at constant neutral gas pressure. At higher gas pressures, torsions spontaneously formed below a certain power threshold. Further reduction of the discharge power led to the formation of multiple torsions. However, at lower gas pressures the torsion formation was preceded by the mode-coupling instability (MCI). The crystal dynamics were studied with the help of the fluctuation spectra of crystal particles’ in-plane velocities. Surprisingly, the spectra of the crystal with torsions and MCI are rather similar and contain “hot spots” at similar locations on the (k, ω) plane, despite very different appearances of the respective particle trajectories. The torsion rotation speed was close (slightly below) to the maximum frequency of the in-plane compressional mode. When multiple torsions formed, their rotation speeds were distributed in a narrow range slightly below the maximum frequency.

Item URL in elib:https://elib.dlr.de/113357/
Document Type:Article
Title:Dynamics of spinning particle pairs in a single-layer complex plasma crystal
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Thomas, Hubertusdlr research group complex plasma, oberpfaffenhofenUNSPECIFIEDUNSPECIFIED
Carmona-Reyes, J.baylor university, waco, texas, usaUNSPECIFIEDUNSPECIFIED
Hyde, T. W.baylor university, waco, texas, usaUNSPECIFIEDUNSPECIFIED
Date:12 July 2017
Journal or Publication Title:Physical Review E
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:011201-1
Publisher:American Physical Society
Keywords:complex plasma, plasma crystal
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 - Research under Space Conditions
DLR - Research theme (Project):R - Komplexe Plasmen / Laboratory research (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Materials Physics in Space > Research Group Complex Plasma
Deposited By: Nosenko, Volodymyr
Deposited On:24 Jul 2017 09:31
Last Modified:17 Mar 2021 13:40

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