Journal article
Nonlinear Wave Synchronization in a Dusty Plasma Under Microgravity on the International Space Station (ISS)
IEEE transactions on plasma science, Vol.49(12), pp.3958-3962
12/2021
DOI: 10.1109/TPS.2021.3123556
Abstract
In a plasma containing micrometer-size dust particles, nonlinear wave synchronization was investigated experimentally under microgravity conditions on board the International Space Station (ISS). These dust particles were confined into a 3-D cloud, in the vicinity of a diffuse edge of the plasma, which was generated by an inductively coupled radio frequency (RF) glow discharge. A cross-sectional slab of the cloud was imaged using a video camera. The dust-density fluctuations in the slab were characterized using the video image data. A steady and long-lived dust acoustic wave (DAW) was observed to be spontaneously generated in the cloud; it propagated through the dust cloud, which had a gradually varying density distribution. Two kinds of spectral analyses of the wave motion were performed, using Fourier transforms and Hilbert transforms, respectively; these revealed two distinctive spatial domains in the cloud, termed frequency clusters. Within each cluster, waves were found to oscillate at a dominant frequency that remained constant, manifesting mutual synchronization throughout the cluster. Across the two clusters, the dominant frequency exhibited a step-wise change, with a frequency ratio of 2:1, which is consistent with phase-lock conditions for a harmonic synchronization state.
Details
- Title: Subtitle
- Nonlinear Wave Synchronization in a Dusty Plasma Under Microgravity on the International Space Station (ISS)
- Creators
- Bin Liu - University of IowaJohn Goree - University of IowaStefan Schutt - University of GreifswaldAndre Melzer - University of GreifswaldM. Y. Pustylnik - German Aerospace CenterH. M. Thomas - German Aerospace CenterV. E. Fortov - Joint Institute for High TemperaturesA. M. Lipaev - Joint Institute for High TemperaturesA. D. Usachev - Joint Institute for High TemperaturesO. F. Petrov - Joint Institute for High TemperaturesA. V. Zobnin - Joint Institute for High TemperaturesM. H. Thoma - University of Giessen
- Resource Type
- Journal article
- Publication Details
- IEEE transactions on plasma science, Vol.49(12), pp.3958-3962
- Publisher
- IEEE
- DOI
- 10.1109/TPS.2021.3123556
- ISSN
- 0093-3813
- eISSN
- 1939-9375
- Grant note
- 1579454; 1573629; 1663801; 1661767 / National Aeronautics and Space Administration-Jet Propulsion Laboratory (NASA-JPL), at Iowa (10.13039/100000104) 50WM1962 / DLR at Universität Greifswald (10.13039/501100002946) 20-12-00365 / Russian Science Foundation, participated in preparation of this experiment and its execution on board the International Space Station (ISS) (10.13039/501100006769) 50WM1441; 50WM1742 / Deutsches Zentrum für Luft- und Raumfahrt (DLR) (10.13039/501100002946)
- Language
- English
- Date published
- 12/2021
- Academic Unit
- Physics and Astronomy; Mechanical Engineering
- Record Identifier
- 9984428783202771
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