Validation of the local thermodynamic equilibrium at a local current concentration area of positive pulsed surface discharge plasma on water
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 w...
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| Veröffentlicht in: | Japanese Journal of Applied Physics 2020-05, Vol.59 (SH), p.SHHA07 |
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| container_issue | SH |
| container_start_page | SHHA07 |
| container_title | Japanese Journal of Applied Physics |
| container_volume | 59 |
| creator | Furusato, Tomohiro Oura, Kazushi Matsuda, Yoshinobu Sasaki, Mitsuru Inada, Yuki Yamashita, Takahiko |
| description | 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. |
| doi_str_mv | 10.35848/1347-4065/ab71d9 |
| format | Article |
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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.</description><identifier>ISSN: 0021-4922</identifier><identifier>EISSN: 1347-4065</identifier><identifier>DOI: 10.35848/1347-4065/ab71d9</identifier><language>eng</language><publisher>Tokyo: Japanese Journal of Applied Physics</publisher><subject>Local current ; Local thermodynamic equilibrium ; Plasma ; Pulse duration ; Water depth ; Water discharge ; Water purification</subject><ispartof>Japanese Journal of Applied Physics, 2020-05, Vol.59 (SH), p.SHHA07</ispartof><rights>Copyright Japanese Journal of Applied Physics May 1, 2020</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c426t-2b7adbcf442b3758e726953157848c09fe3167ceb7e6802baa76076b08d44fa03</citedby><cites>FETCH-LOGICAL-c426t-2b7adbcf442b3758e726953157848c09fe3167ceb7e6802baa76076b08d44fa03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Furusato, Tomohiro</creatorcontrib><creatorcontrib>Oura, Kazushi</creatorcontrib><creatorcontrib>Matsuda, Yoshinobu</creatorcontrib><creatorcontrib>Sasaki, Mitsuru</creatorcontrib><creatorcontrib>Inada, Yuki</creatorcontrib><creatorcontrib>Yamashita, Takahiko</creatorcontrib><title>Validation of the local thermodynamic equilibrium at a local current concentration area of positive pulsed surface discharge plasma on water</title><title>Japanese Journal of Applied Physics</title><description>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. 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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.</abstract><cop>Tokyo</cop><pub>Japanese Journal of Applied Physics</pub><doi>10.35848/1347-4065/ab71d9</doi><oa>free_for_read</oa></addata></record> |
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| ispartof | Japanese Journal of Applied Physics, 2020-05, Vol.59 (SH), p.SHHA07 |
| issn | 0021-4922 1347-4065 |
| language | eng |
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| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | Local current Local thermodynamic equilibrium Plasma Pulse duration Water depth Water discharge Water purification |
| title | Validation of the local thermodynamic equilibrium at a local current concentration area of positive pulsed surface discharge plasma on water |
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