Particle velocity distribution in a three-dimensional dusty plasma under microgravity conditions

Bin Liu; J Goree; M. Y Pustylnik; H. M Thomas; V. E Fortov; A. M Lipaev; A. D Usachev; V. I Molotkov; O. F Petrov; M. H Thoma

doi:10.1063/1.5020393

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Particle velocity distribution in a three-dimensional dusty plasma under microgravity conditions

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Particle velocity distribution in a three-dimensional dusty plasma under microgravity conditions

Bin Liu, J Goree, M. Y Pustylnik, H. M Thomas, V. E Fortov, A. M Lipaev, A. D Usachev, V. I Molotkov, O. F Petrov and M. H Thoma

AIP conference proceedings, Vol.1925(1)

DIVERSE WORLD OF DUSTY PLASMAS: Proceedings of the 8th International Conference on the Physics of Dusty Plasmas

01/05/2018

DOI: 10.1063/1.5020393

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Abstract

The velocity distribution function of dust particles immersed in a plasma was investigated under microgravity conditions. A three-dimensional (3D) cloud of polymer microspheres was suspended in a neon plasma, in the PK-4 instrument onboard the International Space Station (ISS). These dust particles were tracked using video microscopy in a cross section of the 3D dust cloud. The velocity distribution function (VDF) is found to have a non-Maxwellian shape with high-energy tails; it is fit well by a combination of low-energy Maxwellian core and a high-energy non-Gaussian Kappa-distribution halo. Similar non-Maxwellian VDFs are typically observed in space plasmas.

Details

Title: Subtitle: Particle velocity distribution in a three-dimensional dusty plasma under microgravity conditions
Creators: Bin Liu - University of Iowa
J Goree - University of Iowa
M. Y Pustylnik - Forschungsgruppe Komplexe Plasmen, Deutsches Zentrum für Luft- und Raumfahrt
H. M Thomas - Forschungsgruppe Komplexe Plasmen, Deutsches Zentrum für Luft- und Raumfahrt
V. E Fortov - Joint Institute for High Temperatures
A. M Lipaev - Joint Institute for High Temperatures
A. D Usachev - Joint Institute for High Temperatures
V. I Molotkov - Joint Institute for High Temperatures
O. F Petrov - Joint Institute for High Temperatures
M. H Thoma - I. Physikalisches Institut, Justus-Liebig-Universität Gießen
Contributors: Zdenek Nemecek (Editor) - Charles University
Jiri Pavlu (Editor) - Charles University
Jana Safrankova (Editor) - Charles University
Resource Type: Conference proceeding
Publication Details: AIP conference proceedings, Vol.1925(1)
Conference: DIVERSE WORLD OF DUSTY PLASMAS: Proceedings of the 8th International Conference on the Physics of Dusty Plasmas
DOI: 10.1063/1.5020393
ISSN: 0094-243X
eISSN: 1551-7616
Number of pages: 4
Language: English
Date published: 01/05/2018
Academic Unit: Physics and Astronomy; Mechanical Engineering
Record Identifier: 9984199772102771

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