Experimental study on repetitive unipolar nanosecond-pulse dielectric barrier discharge in air at atmospheric pressure

CORC > 电工研究所 > 强流脉冲技术研究组 > 期刊论文

	Experimental study on repetitive unipolar nanosecond-pulse dielectric barrier discharge in air at atmospheric pressure
	Shao T(邵涛)
刊名	JOURNAL OF PHYSICS D: APPLIED PHYSICS
	2008
卷号	41 期号:21 页码:215203
通讯作者	邵涛
中文摘要	Dielectric barrier discharge (DBD) is a typical approach for producing non-thermal plasma at atmospheric pressure. In this experimental study, the DBD is excited by repetitive unipolar nanosecond pulses with a rise time of ～15 ns and a full-width at half-maximum of ～30 ns. With a unipolar pulse voltage of 35 kV, the measured discharge current across the DBD circuit has a positive and negative pulse, and the pulse peak value can be hundreds of amperes. The low-speed camera images of the discharge show that both diffuse ‘glow-like’ and filamentary discharges can be observed, and the air gap length, barrier variety and applied repetition rate are the important factors influencing the transition of the two discharge modes. According to a known equivalent circuit and measured data of a typical DBD, electrical parameters including voltage, current and instantaneous power across the air gap and dielectric layer are calculated. The calculated results indicate that there are two consecutive discharges in the air gap, and the secondary discharge fires immediately after the primary discharge extinguishes. The power consumption of the secondary discharge is provided by the dielectric layer and deposited during the primary discharge. With the increase in the repetition rate, the energy deposition in the air gap per second is greatly enhanced and can exceed one joule for a repetition rate up to 100 Hz, and the corresponding charge transfer is also increased. The electron temperature and density are estimated to be approximately 5.1 eV and 1.6 × 1012 cm？3,respectively.
学科主题	低温等离子体物理学
收录类别	1,4
公开日期	2010-09-29
附注	Dielectric barrier discharge (DBD) is a typical approach for producing non-thermal plasma at atmospheric pressure. In this experimental study, the DBD is excited by repetitive unipolar nanosecond pulses with a rise time of ～15 ns and a full-width at half-maximum of ～30 ns. With a unipolar pulse voltage of 35 kV, the measured discharge current across the DBD circuit has a positive and negative pulse, and the pulse peak value can be hundreds of amperes. The low-speed camera images of the discharge show that both diffuse ‘glow-like’ and filamentary discharges can be observed, and the air gap length, barrier variety and applied repetition rate are the important factors influencing the transition of the two discharge modes. According to a known equivalent circuit and measured data of a typical DBD, electrical parameters including voltage, current and instantaneous power across the air gap and dielectric layer are calculated. The calculated results indicate that there are two consecutive discharges in the air gap, and the secondary discharge fires immediately after the primary discharge extinguishes. The power consumption of the secondary discharge is provided by the dielectric layer and deposited during the primary discharge. With the increase in the repetition rate, the energy deposition in the air gap per second is greatly enhanced and can exceed one joule for a repetition rate up to 100 Hz, and the corresponding charge transfer is also increased. The electron temperature and density are estimated to be approximately 5.1 eV and 1.6 × 1012 cm？3,respectively.
内容类型	期刊论文
源URL	[http://ir.iee.ac.cn/handle/311042/1541]
专题	电工研究所_强流脉冲技术研究组_强流脉冲技术研究组_期刊论文
推荐引用方式 GB/T 7714	Shao T. Experimental study on repetitive unipolar nanosecond-pulse dielectric barrier discharge in air at atmospheric pressure[J]. JOURNAL OF PHYSICS D: APPLIED PHYSICS,2008,41(21):215203.
APA	邵涛.(2008).Experimental study on repetitive unipolar nanosecond-pulse dielectric barrier discharge in air at atmospheric pressure.JOURNAL OF PHYSICS D: APPLIED PHYSICS,41(21),215203.
MLA	邵涛."Experimental study on repetitive unipolar nanosecond-pulse dielectric barrier discharge in air at atmospheric pressure".JOURNAL OF PHYSICS D: APPLIED PHYSICS 41.21(2008):215203.