物理学报2011，Vol.60Issue(1)：389-396,8.
大气压直流滑动弧等离子体工作特性研究
Characterization of atmospheric pressure dc gliding arc plasma
摘要
Abstract
The atmospheric pressure dc gliding arc plasma was investigated through its electrical and optical signals. The arc voltages of various gas discharges were compared. The arc voltage, current, power and resistance of a nitrogen gliding arc in one period were studied. Influences of gas type, gas flow rate and external resistor on the gliding arc fluctuation behaviour were studied using FFT spectrum analysis. Increased main oscillation frequency was observed as gas flow rate or external resistance value increased. Furthermore, major radical species in nitrogen, oxygen and air discharges were determined by means of optical emission spectroscopy. Additionally, the effect of external resistor on the relative intensity of radical emission and axial distribution of relative intensity at 337. 1 nm ( N2 ( C3Ⅱu→B９Ⅱ３ ), Δy = 0 ) were studied.Experimental results showed that radical emission relative intensity decreases with the increasing of external resistance value. The axial distribution of relative intensity exhibits the tendencies of increasing first and then decreasing. The radical emission relative intensity decreases dramatically out of the plasma area.关键词
滑动弧等离子体/非平衡等离子体/脉动特性/发射光谱Key words
gliding arc plasma/ non-thermal plasma/ fluctuation/ optical emission spectroscopy引用本文复制引用
倪明江,余量,李晓东,屠昕,汪宇,严建华..大气压直流滑动弧等离子体工作特性研究[J].物理学报,2011,60(1):389-396,8.基金项目
国家自然科学基金(批准号50976099)资助的课题. （批准号50976099）
