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Wake-mediated propulsion of an extra particle in a two-dimensional plasma crystal

Laut, Ingo and Räth, Christoph and Zhdanov, Sergey and Nosenko, Volodymyr and Thomas, Hubertus M. (2017) Wake-mediated propulsion of an extra particle in a two-dimensional plasma crystal. International Conference on the Physics of Dusty Plasmas, 20.-25. Mai 2017, Prag, Tschechien.

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Abstract

We analyze in simulations and theory the self-propelled motion of an upstream ``extra'' particle in a two-dimensional plasma crystal. Experimental observations [1] showed that the extra particle is confined in a channel of two neighboring rows of particles and moves persistently through the crystal. We use the simple model of a pointlike ion wake charge to reproduce this intriguing effect in simulations. We show that the nonreciprocity of the particle interaction, owing to the plasma flow, is responsible for an asymmetric deformation of the channel that enables the self-propelled motion of the extra particle [2]. We find good agreement of the terminal extra-particle velocity with our theoretical considerations and with experiments. [1] C.-R. Du, V. Nosenko, S. Zhdanov, H. M. Thomas, G. E. Morfill. Channeling of particles and associated anomalous transport in a two-dimensional complex plasma crystal. Phys. Rev. E, 89:021101, 2014 [2] I. Laut, C. Räth, S. K. Zhdanov, V. Nosenko, G. Morfill, H. Thomas. Wake-mediated propulsion of an upstream particle in two-dimensional plasma crystals. Phys. Rev. Lett. 118:075002, 2017

Item URL in elib:https://elib.dlr.de/112631/
Document Type:Conference or Workshop Item (Speech)
Title:Wake-mediated propulsion of an extra particle in a two-dimensional plasma crystal
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Laut, IngoIngo.Laut (at) dlr.deUNSPECIFIED
Räth, ChristophChristoph.Raeth (at) dlr.deUNSPECIFIED
Zhdanov, SergeySergey.Zhdanov (at) dlr.deUNSPECIFIED
Nosenko, VolodymyrV.Nosenko (at) dlr.deUNSPECIFIED
Thomas, Hubertus M.Hubertus.Thomas (at) dlr.deUNSPECIFIED
Date:2017
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:complex plasma, self-propelled motion, active matter
Event Title:International Conference on the Physics of Dusty Plasmas
Event Location:Prag, Tschechien
Event Type:international Conference
Event Dates:20.-25. Mai 2017
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:Institute of Materials Physics in Space
Deposited By: Laut, Ingo
Deposited On:12 Jun 2017 06:43
Last Modified:14 Mar 2019 17:39

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