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Slowing of acoustic waves in electrorheological and string-fluid complex plasmas

Schwabe, Mierk and Khrapak, Sergey and Zhdanov, Sergey and Pustylnik, Mikhail and Räth, Christoph and Fink, Martin and Kretschmer, Michael and Lipaev, Andrey and Molotkov, Vladimir and Schmitz, Andreas and Thoma, Markus H. and Usachev, Alexandr and Zobnin, Andrey and Padalka, Gennady and Fortov, Vladimir and Petrov, Oleg and Thomas, Hubertus M. (2020) Slowing of acoustic waves in electrorheological and string-fluid complex plasmas. New Journal of Physics, 22, 083079. Institute of Physics (IOP) Publishing. doi: 10.1088/1367-2630/aba91b. ISSN 1367-2630.

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Official URL: https://doi.org/10.1088/1367-2630/aba91b

Abstract

The PK-4 laboratory consists of a direct current plasma tube into which microparticles are injected, forming a complex plasma. The microparticles acquire many electrons from the ambient plasma and are thus highly charged and interact with each other. If ion streams are present, wakes form downstream of the microparticles, which lead to an attractive term in the potential between the microparticles, triggering the appearance of microparticle strings and modifying the complex plasma into an electrorheological form. Here we report on a set of experiments on compressional waves in such a string fluid in the PK-4 laboratory during a parabolic flight and on board the International Space Station. We find a slowing of acoustic waves and hypothesize that the additional attractive interaction term leads to slower wave speeds than in complex plasmas with purely repulsive potentials. We test this hypothesis with simulations, and compare with theory.

Item URL in elib:https://elib.dlr.de/135847/
Document Type:Article
Title:Slowing of acoustic waves in electrorheological and string-fluid complex plasmas
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Schwabe, MierkUNSPECIFIEDhttps://orcid.org/0000-0001-6565-5890UNSPECIFIED
Khrapak, SergeyUNSPECIFIEDhttps://orcid.org/0000-0002-3393-6767UNSPECIFIED
Zhdanov, SergeyUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pustylnik, MikhailUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Räth, ChristophUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fink, MartinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kretschmer, MichaelI. Physikalisches Institut, Justus-Liebig-Univerität Gießen, Heinrich-Buff-Ring 16, 35392 Gießen, GermanyUNSPECIFIEDUNSPECIFIED
Lipaev, AndreyJoint Institute for High Temperatures, RAS, MoscowUNSPECIFIEDUNSPECIFIED
Molotkov, VladimirJoint Institute for High Temperatures, RAS, MoscowUNSPECIFIEDUNSPECIFIED
Schmitz, AndreasI. Physikalisches Institut, Justus-Liebig-Univerität Gießen, Heinrich-Buff-Ring 16, 35392 Gießen, GermanyUNSPECIFIEDUNSPECIFIED
Thoma, Markus H.Justus-Liebig-Universität Gießen, Gießen, GermanyUNSPECIFIEDUNSPECIFIED
Usachev, AlexandrJoint Institute for High Temperatures, RAS, MoscowUNSPECIFIEDUNSPECIFIED
Zobnin, AndreyJoint Institute for High Temperatures, Russian Academy of SciencesUNSPECIFIEDUNSPECIFIED
Padalka, GennadyGagarin Research and Test Cosmonaut Training Center, 141160 Star City, Moscow Region, RussiaUNSPECIFIEDUNSPECIFIED
Fortov, VladimirJoint Institute for High Temperatures, RAS, MoscowUNSPECIFIEDUNSPECIFIED
Petrov, OlegJoint Institute for High Temperatures, RAS, MoscowUNSPECIFIEDUNSPECIFIED
Thomas, Hubertus M.UNSPECIFIEDhttps://orcid.org/0000-0001-8358-2023UNSPECIFIED
Date:27 August 2020
Journal or Publication Title:New Journal of Physics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:22
DOI:10.1088/1367-2630/aba91b
Page Range:083079
Publisher:Institute of Physics (IOP) Publishing
ISSN:1367-2630
Status:Published
Keywords:complex plasmas, dusty plasmas, string fluids, waves, elecrorheological fluids
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 / Zero gravity (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Materials Physics in Space > Research Group Complex Plasma
Deposited By: Schwabe, Dr. Mierk
Deposited On:07 Sep 2020 08:50
Last Modified:24 Oct 2023 11:31

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