Journal article
Diffusive Motion in a 3-D Cluster in PK-4
IEEE transactions on plasma science, Vol.47(7), pp.3100-3106
07/2019
DOI: 10.1109/TPS.2019.2893155
Abstract
Random motion of small solid particles is analyzed in a 3-D dusty plasma experiment under microgravity conditions. In this experiment, performed using the Plasmakristall-4 (PK-4) instrument on board the international space station, a cloud of microspheres was localized near a radio frequency coil that powered a neon plasma. We devised a method of correcting particle mean-square displacement (MSD) data to account for a small hydrodynamic flow. Using a time series of the MSD, we determined that random motion was nearly diffusive, with a diffusion coefficient of 0.0017 mm 2 /s. Another measure of displacements, the probability distribution function, fits a Kappa distribution with \kappa = 6.9 , indicating that the random motion was nearly Gaussian.
Details
- Title: Subtitle
- Diffusive Motion in a 3-D Cluster in PK-4
- Creators
- Zian Wei - University of IowaBin Liu - University of IowaJohn Goree - University of IowaM. Y Pustylnik - German Aerospace CenterH. M Thomas - German Aerospace CenterV. E Fortov - Russian Academy of SciencesA. M Lipaev - Russian Academy of SciencesA. D Usachev - Russian Academy of SciencesV. I Molotkov - Russian Academy of SciencesO. F Petrov - Russian Academy of SciencesM. H Thoma - University of Giessen
- Resource Type
- Journal article
- Publication Details
- IEEE transactions on plasma science, Vol.47(7), pp.3100-3106
- Publisher
- IEEE
- DOI
- 10.1109/TPS.2019.2893155
- ISSN
- 0093-3813
- eISSN
- 1939-9375
- Grant note
- 50WM1441; 50WM1442 / Deutsches Zentrum für Luft- und Raumfahrt (10.13039/501100002946) 1573629; 1579454 / Jet Propulsion Laboratory (10.13039/100006196)
- Language
- English
- Date published
- 07/2019
- Academic Unit
- Physics and Astronomy; Mechanical Engineering
- Record Identifier
- 9984199675102771
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