On the Electrical Characteristic of Atmospheric Pressure Air/He/O2/N2/Ar Plasma Needle

被引：7

作者：

Xiong, Zilan ^{[1
]}

Huang, Quanjun ^{[1
]}

Wang, Zhan ^{[1
]}

Lu, Xinpei ^{[1
]}

Pan, Yuan ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430030, Peoples R China

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 2013年 / 41卷 / 07期

基金：

高等学校博士学科点专项科研基金;

关键词：

Atmospheric pressure plasma; biomedical application; nonequilibrium plasma; plasma jet; TO-PLANE CORONA; TEMPERATURE PLASMA; NEGATIVE CORONA; AIR; PULSES; DISCHARGES;

D O I：

10.1109/TPS.2013.2265918

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The electrical characteristics of an air plasma needle are investigated. The discharge is driven by pulsed direct current voltages. A series of discharge pulses appear for one applied voltage pulse. The interval between nearby discharge current is tens of nanoseconds, which corresponds to a frequency of tens of MHz. This is much higher than that of the Trichel pulse (tens of kHz). The frequency of the discharge current pulses increases with the applied voltage but decreases with the gas gap distance. The series current pulses are found not only existing in electronegative gases (air, pure O-2), but also in Ar and N-2. On the other hand, when He is used, there always appears only one discharge current pulse; by adding small percentage of O-2 to He, multiple discharges appear again.

引用

页码：1746 / 1750

页数：5

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