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Complex plasmas under microgravity

Schwabe, Mierk and Thomas, Hubertus (2015) Complex plasmas under microgravity. In: 4th International Workshop on Diagnostics and Simulation of Dusty Plasmas. 4th International Workshop on Diagnostics and Simulation of Dusty Plasmas, 9-11 Sep 2015, Kiel, Germany.

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Abstract

Complex plasmas consist of micrometer-sized particles embedded in a low temperature plasma. Gravity is one of the strongest forces acting on the microparticles and pulls the particles towards the lower sheath edge. In order to perform experiments in the plasma bulk, gravity has to be compensated for (e.g., by thermophoresis [1]), or experiments need to be performed in weightlessness. Weightlessness can be achieved by dropping the experimental setup, either in a drop tower, inside a plane during a parabolic flight, inside a rocket on a parabolic trajectory, or in orbit around Earth (typically using the International Space Station). All of these options have distinct advantages and disadvantages. When weightless, the complex plasma fills a bigger region of the plasma chamber. Nevertheless, new phenomena appear, for instance, a central, particle-free void is formed that is caused by the ions pushing the particles away from the center of the plasma chamber [2]. Despite these complications, weightless complex plasmas offer the possibility to study many fascinating phenomena that are not easily accessible on ground – for instance, three-dimensional crystallization [3], wave formation and propagation [4], and vortices [5]. [1] H. Rothermel et al., Phys. Rev. Lett. 89, 175001 (2002) [2] A. Nefedov et al., New J. Phys. 5, 33 (2003); G. E. Morfill et al., Phys. Rev. Lett. 83, 1598 (1999). [3] e.g., S. Khrapak et al., Phys. Rev. Lett. 106, 205001 (2011) [4] e.g., M. Himpel et al., Phys. Plasmas 21, 033703 (2014) [5] e.g., T. Bockwoldt et al, Phys. Plasmas 21, 103703 (2014)

Item URL in elib:https://elib.dlr.de/99543/
Document Type:Conference or Workshop Item (Lecture)
Title:Complex plasmas under microgravity
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schwabe, Mierkmierk.schwabe (at) dlr.deUNSPECIFIED
Thomas, Hubertushubertus.thomas (at) dlr.deUNSPECIFIED
Date:10 September 2015
Journal or Publication Title:4th International Workshop on Diagnostics and Simulation of Dusty Plasmas
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:complex plasma, dusty plasma, microgravity, weightlessness
Event Title:4th International Workshop on Diagnostics and Simulation of Dusty Plasmas
Event Location:Kiel, Germany
Event Type:Workshop
Event Dates:9-11 Sep 2015
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 / Zero gravity
Location: Oberpfaffenhofen
Institutes and Institutions:Research Group Complex Plasma
Deposited By: Schwabe, Dr. Mierk
Deposited On:26 Nov 2015 10:19
Last Modified:31 Jul 2019 19:56

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