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Validation of the local thermodynamic equilibrium at a local current concentration area of positive pulsed surface discharge plasma on water


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Title: Validation of the local thermodynamic equilibrium at a local current concentration area of positive pulsed surface discharge plasma on water
Authors: Furusato, Tomohiro / Oura, Kazushi / Matsuda, Yoshinobu / Sasaki, Mitsuru / Inada, Yuki / Yamashita, Takahiko
Issue Date: 5-Mar-2020
Publisher: The Japan Society of Applied Physics
Citation: Japanese Journal of Applied Physics, 59, art.no.SHHA07; 2020
Abstract: Pulsed surface discharge on water has been given attention as a water purification technology and material synthesis method. The contribution of this study is to clarify the plasma state of a positive pulsed surface discharge on water. Although the pulse width of the current dramatically decreased with an applied voltage ranging from 10 to 20 kV under a conductivity of water of 1 mS cm-1 and a water depth of 2 mm, the plasma state in the vicinity of the needle electrode was a local thermodynamic equilibrium (LTE) state. Validation of the LTE was performed by the McWhirter criterion. On the other hand, the propagating discharge along the water surface was supposed to be in non-LTE state. Consequently, the pulsed surface discharge on water was in mixed states of LTE and non-LTE.
URI: http://hdl.handle.net/10069/39976
ISSN: 00214922
DOI: 10.35848/1347-4065/ab71d9
Rights: © 2020 The Japan Society of Applied Physics. This is an author-created, un-copyedited version of an article accepted for publication in Japanese Journal of Applied Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at 10.35848/1347-4065/ab71d9.
Type: Journal Article
Text Version: author
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/39976

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