DocumentCode :
3560874
Title :
Observation of Surface Discharge in Nitrogen Based on Pockels Effect
Author :
Mu, Hai-Bao ; Zhang, Guan-Jun ; Luo, Yong-Fen ; Tanaka, Yasuhiro
Author_Institution :
State Key Lab. of Electr. Insulation & Power Equip., Xi´´an Jiaotong Univ., Xi´´an, China
Volume :
39
Issue :
11
fYear :
2011
Firstpage :
2150
Lastpage :
2151
Abstract :
Surface discharge phenomena on dielectric materials in nitrogen are investigated by Pockels effect technique. A needle-plate electrode system is adopted, and one single cycle of 20-Hz sinusoidal HVac is applied with an amplitude of 5 kV. It is found that positive discharges have two distinct regions, i.e., surface charges appear uniformly in a core region, and then, they develop into streamer pattern away from the core. Negative charge distribution always extends uniformly, and when negative voltage returns to zero, back discharge phenomena can be seen clearly. Within pressure decreases from 101 to 21 kPa, the scale of discharge area, the branch width, and the numbers of streamers increase, but charge densities reduce. It is interesting that the products of core region´s radius of positive discharges and corresponding pressure are all around 80 torr ×cm.
Keywords :
Pockels effect; dielectric materials; electrodes; nitrogen; plasma pressure; surface discharges; N; Pockels effect; back discharge; branch width; dielectric materials; needle-plate electrode system; negative charge distribution; pressure 101 kPa; pressure 21 kPa; streamer pattern; surface discharge; Discharges; Electrodes; Indium tin oxide; Needles; Nitrogen; Surface discharges; Surface treatment; Nitrogen; Pockels effect; surface discharge;
fLanguage :
English
Journal_Title :
Plasma Science, IEEE Transactions on
Publisher :
ieee
Conference_Location :
5/2/2011 12:00:00 AM
ISSN :
0093-3813
Type :
jour
DOI :
10.1109/TPS.2011.2132807
Filename :
5762372
Link To Document :
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