The creation of electric wind due to the electrohydrodynamic force

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Understanding the interactions between ionized matter and neutral particles is a prerequisite for discovering their impact on natural phenomena. One such phenomenon is the electric wind, which supposedly occurs due to the charged particle–neutral coupling in systems of weakly ionized gases, but this mechanism remains unclear. Here, we report direct evidence that electric wind is caused by an electrohydrodynamic force generated by the charged particle drag as a result of the momentum transfer from electrons/ions to neutrals. The model experiment is based on a pulsed plasma jet as a source of weakly ionized gases generated in the helium gas at atmospheric pressure using Schlieren photography. Studying the helium gas flow trajectories at different discharge parameters allows one to distinguish between the effects of streamer propagation or space charge drift causing the electric wind as well as to determine the role of electrons and (positive) ions in wind generation.
Publisher
NATURE PUBLISHING GROUP
Issue Date
2018-01
Language
English
Article Type
Article
Citation

NATURE COMMUNICATIONS, v.9, no.371, pp.1 - 8

ISSN
2041-1723
DOI
10.1038/s41467-017-02766-9
URI
http://hdl.handle.net/10203/240232
Appears in Collection
NE-Journal Papers(저널논문)
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