Spectroscopic diagnosis of plasma in atmospheric pressure negative pulsed gas-liquid discharge with nozzle-cylinder electrode

Ming SUN (孙明); Zhan TAO (陶瞻); Zhipeng ZHU (朱志鹏); Dong WANG (王东); Wenjun PAN (潘文军)

doi:10.1088/2058-6272/aab601

Plasma Science and Technology > 2018 > 20(5): 54005-054005. > DOI: 10.1088/2058-6272/aab601

Ming SUN (孙明), Zhan TAO (陶瞻), Zhipeng ZHU (朱志鹏), Dong WANG (王东), Wenjun PAN (潘文军). Spectroscopic diagnosis of plasma in atmospheric pressure negative pulsed gas-liquid discharge with nozzle-cylinder electrode[J]. Plasma Science and Technology, 2018, 20(5): 54005-054005. DOI: 10.1088/2058-6272/aab601

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Spectroscopic diagnosis of plasma in atmospheric pressure negative pulsed gas-liquid discharge with nozzle-cylinder electrode

1 Institute of Electrostatics, Shanghai Maritime University, Shanghai 201306, People’s Republic of China 2 Department of Electrical Automation, Shanghai Maritime University, Shanghai 201306, People’s Republic of China

Funds: This work is supported by National Natural Science Foundation of China (Grant No. 51207089).

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Received Date: November 07, 2017

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Abstract

Abstract

The plasma characteristics of a gas-liquid phase discharge reactor were investigated by optical and electrical methods. The nozzle-cylinder electrode in the discharge reactor was supplied with a negative nanosecond pulsed generator. The optical emission spectrum diagnosis revealed that OH (A²∑⁺→X²Π, 306–309 nm), N₂(C³Π→B³Π_g, 337 nm), O (3p⁵p→3s⁵s⁰, 777.2 nm) and O (3p³p→3s³s⁰, 844.6 nm) were produced in the discharge plasma channels. The electron temperature (T_e) was calculated from the emission relative intensity ratio between the atomic O 777.2 nm and 844.6 nm, and it increased with the applied voltage and the pulsed frequency and fell within the range of 0.5–0.8 eV. The gas temperature (T_g) that was measured by Lifbase was in a range from 400 K to 600 K.
- gas-liquid negative pulsed discharge,
- discharge plasma,
- reactivate species,
- nozzlecylinder electrode, diagnosis

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References (31)

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