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河北大学 物理科学与技术学院,河北 保定,071002
纸质出版日期:2015-12-10,
收稿日期:2015-8-28,
修回日期:2015-9-24,
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张浩, 董丽芳, 高星等. 介质阻挡放电中栅栏发光斑图等离子体参量研究[J]. 发光学报, 2015,36(12): 1440-1444
ZHANG Hao, DONG Li-fang, GAO Xing etc. Investigation on The Plasma Parameters of The Fence Pattern in Dielectric Barrier Discharge[J]. Chinese Journal of Luminescence, 2015,36(12): 1440-1444
张浩, 董丽芳, 高星等. 介质阻挡放电中栅栏发光斑图等离子体参量研究[J]. 发光学报, 2015,36(12): 1440-1444 DOI: 10.3788/fgxb20153612.1440.
ZHANG Hao, DONG Li-fang, GAO Xing etc. Investigation on The Plasma Parameters of The Fence Pattern in Dielectric Barrier Discharge[J]. Chinese Journal of Luminescence, 2015,36(12): 1440-1444 DOI: 10.3788/fgxb20153612.1440.
采用高速录像机和光谱仪
研究了在双水电极介质阻挡放电装置中首次得到的由长短交替的棒状放电结构组成的栅栏斑图。通过观察20 s曝光录像照片发现栅栏斑图由体放电和沿面放电组成。采用发射光谱法
利用N
2
第二正带系(C
3
u
B
3
g
)的发射谱线和Ar Ⅰ(2P
2
1S
5
)谱线的展宽
分别测量和比较了不同体放电和沿面放电不同位置处的分子振动温度和电子密度。结果发现:斑图中具有较强沿面放电的体放电比具有较弱沿面放电的体放电拥有较高的分子振动温度和电子密度;在沿面放电的方向上
沿面放电的分子振动温度和电子密度均逐渐降低。理论分析证明
壁电荷在狭缝内的非等量分布是影响栅栏斑图形成的主要因素。
The fence pattern that consists of volume discharges (VDs) and surface discharges (SDs) is observed by using the dielectric barrier discharge device with two water electrodes. The VDs uniformly distribute along the slit
and SDs are perpendicular to the slit and own two kinds of intensity. The short-exposed photograph is obtained by a high speed video camera. The plasma parameters of fence pattern are investigated by spectrograph. The emission spectra of the N
2
second positive band(C
3
u
B
3
g
)is collected
and the molecule vibrational temperature is calculated by the emission intensities. Furthermore
the width of Ar Ⅰ 696.5 nm is used to estimate the electron density. The results show that the volume discharges with strong surface discharges have higher molecule vibrational temperature and higher electron density than those with less surface discharge. Besides
along the surface discharge direction
surface discharge's molecule vibrational temperature and the electron density gradually decrease. The unequivalent distribution of the wall charges contributes to the formation of fence pattern.
介质阻挡放电栅栏发光斑图分子振动温度电子密度
dielectric barrier dischargefence patternmolecular vibrational temperatureelectron density
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