Study on homogeneous nanosecond-pulse dielectric barrier discharge in atmospheric air

被引：0

作者：

Shao, Tao ^{[1
,2
,3
]}

Zhang, Cheng ^{[1
,2
]}

Yu, Yang ^{[1
]}

Fang, Zhi ^{[4
]}

Xu, Rong ^{[1
,2
]}

Yan, Ping ^{[1
,2
]}

机构：

[1] Institute of Electrical Engineering, Chinese Academy of Sciences

[2] Key Laboratory of Power Electronics and Electric Drive, Chinese Academy of Sciences

[3] State Key Laboratory of Polymer Materials Engineering, Sichuan University

[4] School of Automation and Electrical Engineering, Nanjing University of Technology

来源：

Gaodianya Jishu/High Voltage Engineering | 2012年 / 38卷 / 05期

关键词：

Atmospheric-pressure air; Dielectric barrier discharge (DBD); Emission spectra; Fast image; Filamentary discharge; Homogeneous discharge; Low-temperature plasma; Nanosecond-pulse;

D O I：

10.3969/j.issn.1003-6520.2012.05.004

中图分类号：

学科分类号：

摘要：

Dielectric barrier discharge (DBD) in atmospheric air has a promising application for plasma excitation, and a homogeneous discharge is important for dielectric barrier discharge applications. Consequently, a repetitive nanosecond-pulse generator with 40 ns rise time and 70 ns pulse duration was used to drive dielectric barrier discharge in air at atmospheric pressure. Discharge characteristic, images, and emission spectra of the nanosecond-pulse DBD were presented. Especially, fast images were taken using one ICCD camera with an exposure time of 2 ns. The experimental results show that the discharge is in a homogeneous mode when the air gap is 1 mm, and it will be changed to a filamentary mode when the air gap is increased to 4 mm. The emission spectra of the discharge indicate that the spectra are mainly from nitrogen species of second positive system below 400 nm. The results indicate that the usage of nanosecond pulses can produce a stable dielectric barrier discharge in atmospheric air, especially results in a homogeneous discharge under some conditions, and the excited plasma is a low-temperature plasma with a highly non-equilibrium state.

引用

页码：1045 / 1050

页数：5

共 25 条

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