Generation of Atmospheric Pressure Plasma by Repetitive Nanosecond Pulses in Air Using Water Electrodes

SHAO Tao; YU Yang; ZHANG Cheng; JIANG Hui; YAN Ping; ZHOU Yuanxiang

Plasma Science and Technology > 2011 > 13(6): 735-739.

SHAO Tao, YU Yang, ZHANG Cheng, JIANG Hui, YAN Ping, ZHOU Yuanxiang. Generation of Atmospheric Pressure Plasma by Repetitive Nanosecond Pulses in Air Using Water Electrodes[J]. Plasma Science and Technology, 2011, 13(6): 735-739.

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Generation of Atmospheric Pressure Plasma by Repetitive Nanosecond Pulses in Air Using Water Electrodes

1 Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China 2 Key Laboratory of Power Electronics and Electric Drive, Chinese Academy of Sciences, Beijing 100190, China 3 State Key Laboratory of Control and Simulation of Power Systems and Generating Equipment, Electrical Engineering Department, Tsinghua University Beijing 100084, China

Funds: supported by the National Natural Science Foundation of China under contract 11076026 and 50707032, the Knowledge Innovation Program of the Chinese Academy of Sciences under contract KGCX2-YW-339, and Opening Project of State Key Laboratory of Polymer Materials Engineering in Sichuan University under contract KF201103.

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Received Date: July 20, 2011

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Abstract

Abstract

Dielectric barrier discharge (DBD) excitated by pulsed power is a promising method for producing nonthermal plasma at atmospheric pressure. Discharge characteristic in a DBD with salt water as electrodes by a home-made unipolar nanosecond-pulse power source is presented in this paper. The generator is capable of providing repetitive pulses with the voltage up to 30 kV and duration of 70 ns at a 300 Ω resistive load. Applied voltage and discharge current are measured under various experimental conditions. The DBD created between two liquid electrodes shows that the discharge is homogeneous and diffuse in the whole discharge regime. Spectra diagnosis is conducted by an optical emission spectroscopy. The air plasma has strong emission from nitrogen species below 400 nm, notably the nitrogen second positive system.
- non-thermal plasma,
- dielectric barrier discharge,
- pulsed power,
- nanosecond pulse,
- pulse repetition frequency,
- atmospheric pressure air,
- emission spectra.

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