Laut, Ingo and Räth, Christoph and Zhdanov, Sergey and Nosenko, Volodymyr and Morfill, Gregor E. and Thomas, Hubertus M. (2018) Self-propelled motion of a particle above a two-dimensional plasma crystal. In: Dynamic Days. Dynamics Days Europe 2018, 2018-09-03 - 2018-09-07, Loughborough, GB.
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Abstract
Plasma crystals consist of ordered arrangements of charged microparticles that levitate in a weakly ionized gas. Besides confining the particles, the plasma also alters the microparticle interaction, making it nonreciprocal. The nonreciprocal interactions cause interesting effects like the mode-coupling instability and the formation of particle strings or spinning particle pairs. Here, we analyze in simulations and theory the self-propelled motion of an "extra" particle floating above a two-dimensional plasma crystal. Previous 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 is responsible for a broken symmetry of the channel that enables the self-propelled motion of the extra particle [2] . [1] C.-R. Du, V. Nosenko, S. Zhdanov, H. M. Thomas, and G. E. Morfill, Phys. Rev. E 89, 021101(R) (2014) [2] I. Laut, C. Räth, S. K. Zhdanov, V. Nosenko, G. E. Morfill, and H. M. Thomas, Physical Rev. Lett. 118, 075002
Item URL in elib: | https://elib.dlr.de/124697/ | ||||||||||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||||||
Title: | Self-propelled motion of a particle above a two-dimensional plasma crystal | ||||||||||||||||||||||||||||
Authors: |
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Date: | 2018 | ||||||||||||||||||||||||||||
Journal or Publication Title: | Dynamic Days | ||||||||||||||||||||||||||||
Refereed publication: | No | ||||||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||||||
Keywords: | complex Plasmas, self propelled Motion, nonreciprocal interaction, channeling effect | ||||||||||||||||||||||||||||
Event Title: | Dynamics Days Europe 2018 | ||||||||||||||||||||||||||||
Event Location: | Loughborough, GB | ||||||||||||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||||||||||||
Event Start Date: | 3 September 2018 | ||||||||||||||||||||||||||||
Event End Date: | 7 September 2018 | ||||||||||||||||||||||||||||
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 / Data analysis (old), R - Komplexe Plasmen / Theory, Simulation (old) | ||||||||||||||||||||||||||||
Location: | Oberpfaffenhofen | ||||||||||||||||||||||||||||
Institutes and Institutions: | Institute of Materials Physics in Space > Research Group Complex Plasma | ||||||||||||||||||||||||||||
Deposited By: | Laut, Ingo | ||||||||||||||||||||||||||||
Deposited On: | 22 Jan 2019 14:33 | ||||||||||||||||||||||||||||
Last Modified: | 24 Apr 2024 20:28 |
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