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Torsions as a new dynamic feature in 2D plasma crystals

Nosenko, V. and Zhdanov, Sergey and Thomas, Hubertus and Carmona-Reyes, J. and Hyde, T. W. (2016) Torsions as a new dynamic feature in 2D plasma crystals. Dynamics Days 2016, 6-10 June 2016, Corfu, Greece. (Unpublished)

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Complex plasmas represent the plasma state of soft matter. They consist of a weakly ionized gas where small particles of solid matter are dispersed. Particles charge up and interact with each other through the screened Coulomb potential. They can form various ordered structures including monolayer (2D) crystalline lattices. As any kind of crystal, 2D plasma crystals support various collective excitations, some of them generic and others plasma-specic. Examples include phonons excited by particle thermal motion, hybrid modes generated by mode-coupling instability, and dislocations generated by excessive shear stress. In this presentation, we report on a new type of collective excitation in 2D plasma crystals, a spinning pair of particles, which we call a torsion. It is a dissipative structure where energy input is provided by the flow of ions and energy dissipation is through the neutral gas friction on particles. Non-reciprocal attraction between the particles in a torsion is due to the plasma wake effect.

Item URL in elib:https://elib.dlr.de/106155/
Document Type:Conference or Workshop Item (Speech)
Title:Torsions as a new dynamic feature in 2D plasma crystals
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Nosenko, V.v.nosenko (at) dlr.deUNSPECIFIED
Zhdanov, Sergeysergey.zhdanov (at) dlr.deUNSPECIFIED
Thomas, HubertusDLR Research Group Complex Plasma, OberpfaffenhofenUNSPECIFIED
Carmona-Reyes, J.Baylor University, Waco, Texas, USAUNSPECIFIED
Hyde, T. W.Baylor University, Waco, Texas, USAUNSPECIFIED
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:complex plasma, particle pairing
Event Title:Dynamics Days 2016
Event Location:Corfu, Greece
Event Type:international Conference
Event Dates:6-10 June 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 / Laboratory research
Location: Oberpfaffenhofen
Institutes and Institutions:Research Group Complex Plasma
Deposited By: Nosenko, Volodymyr
Deposited On:21 Sep 2016 09:32
Last Modified:21 Sep 2016 09:32

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