Journal article
Interaction of a biased cylinder with a flowing dusty plasma
Journal of plasma physics, Vol.79(5), pp.677-682
10/2013
DOI: 10.1017/S0022377813000299
Abstract
Experimental observations of supersonically flowing dusty plasmas and their interaction with an electrically biased circular cylinder are presented. Two methods for producing flowing dusty plasmas are described. The dusty plasma is produced in a DC anode glow discharge plasma. In Configuration I, a secondary dust cloud, initially formed near a biased grid, flowed away from the grid at supersonic speeds when the grid voltage was suddenly changed. In Configuration II, a pencil-like dust beam was produced using a nozzle-like (converging-diverging) electrostatic potential structure. Using Configuration I, the streaming dust encountered a biased cylinder (wire) whose axis was oriented transverse to the dust flow. The flowing dust particles were repelled by the electrostatic field of the negatively charged cylinder, and a dust void was formed around the cylinder. A detached electrohydrodynamic bow shock, akin to the Earth's magnetohydrodynamic bow shock, was formed on the upstream side of the cylinder, while an extended teardrop-shaped wake region was formed on the downstream side. Video imaging of the dust stream allowed for observations of the structure and evolution of the bow shock. Configuration II was used to produce a narrow beam of dust particles and observe how the beam was deflected around the biased cylinder. Three multimedia files (movies) of the observed phenomena are provided in the online Supplementary material.
Details
- Title: Subtitle
- Interaction of a biased cylinder with a flowing dusty plasma
- Creators
- J. K Meyer - University of IowaJ. R Heinrich - Kirtland Air Force BaseS.-H Kim - University of IowaR. L Merlino - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of plasma physics, Vol.79(5), pp.677-682
- DOI
- 10.1017/S0022377813000299
- ISSN
- 0022-3778
- eISSN
- 1469-7807
- Publisher
- Cambridge University Press
- Number of pages
- 6
- Alternative title
- J. K. Meyer et al.
- Language
- English
- Date published
- 10/2013
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199763402771
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