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Spontaneous pairing and cooperative movements of micro-particles in a two dimensional plasma crystal

Zhdanov, Sergey K. and Couedel, L. and Nosenko, V. and Thomas, Hubertus and Morfill, Gregor E. (2015) Spontaneous pairing and cooperative movements of micro-particles in a two dimensional plasma crystal. Physics of Plasmas, 22, 053703-1. American Institute of Physics (AIP). DOI: 10.1063/1.4920967 ISSN 1070-664X

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Official URL: http://scitation.aip.org/content/aip/journal/pop/22/5/10.1063/1.4920967

Abstract

In an argon plasma of 20W rf discharge at a pressure of 1.38 Pa, a stable highly ordered monolayer of microparticles is suspended. We observe spontaneous particle pairing when suddenly reducing the gas pressure. Special types of dynamical activity, in particular, entanglement and cooperative movements of coupled particles have been registered. In the course of the experiment first appeared single vertical pairs of particles, in further they gradually accumulated causing melting of the entire crystal. To record pairing events, the particle suspension is side-view imaged using a vertically extended laser sheet. The long-lasting pre-melting phase assured the credible recording and identification of isolated particle pairs. The high monolayer charge density is crucial to explain the spontaneous pairing events observed in our experiments as the mutual repulsion between the particles comprising the monolayer make its vertical extend thicker.

Item URL in elib:https://elib.dlr.de/96401/
Document Type:Article
Title:Spontaneous pairing and cooperative movements of micro-particles in a two dimensional plasma crystal
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Zhdanov, Sergey K.Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, GermanyUNSPECIFIED
Couedel, L.CNRS, Aix-Marseille UniversiteUNSPECIFIED
Nosenko, V.v.nosenko (at) dlr.deUNSPECIFIED
Thomas, HubertusDLR Research Group Complex Plasma, OberpfaffenhofenUNSPECIFIED
Morfill, Gregor E.Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, GermanyUNSPECIFIED
Date:2015
Journal or Publication Title:Physics of Plasmas
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:22
DOI :10.1063/1.4920967
Page Range:053703-1
Publisher:American Institute of Physics (AIP)
ISSN:1070-664X
Status:Published
Keywords:plasma crystal, spontaneous pairing
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:Institute of Materials Physics in Space > Research Group Complex Plasma
Deposited By: Nosenko, Volodymyr
Deposited On:26 May 2015 11:26
Last Modified:06 Sep 2019 15:18

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