Title :
Discharge inception characteristics and optical observation of discharge profile under nonuniform field in vacuum
Author :
Okubo, Hisanori ; Yuasa, S. ; Ota, Kaoru ; Hayakaura, N. ; Hikita, M.
Author_Institution :
Dept. of Electr. Eng., Nagoya Univ., Japan
Abstract :
The authors measured the DC discharge inception voltage (Vi) for various electrode configurations in He, Ar and air in the vacuum range from 105 Pa to 10-1 Pa to discuss discharge mechanisms under a space environment. By quantitative consideration of Ei/p distribution in the gap space at the discharge inception, the discharge inception mechanism was investigated under nonuniform electric field in vacuum. At the same time, the authors observed the discharge profile variation with gas pressure and analyzed the characteristics of the discharge profile, quantitatively, using image processing techniques. Based on the analysis, they found that the discharge inception characteristics under nonuniform electric field agreed with those under uniform electric fields with consideration of discharge path length variation with gas pressure
Keywords :
aerospace testing; discharges (electric); electric breakdown; electric fields; electrodes; image processing; insulation testing; vacuum breakdown; vacuum insulation; 1E5 to 1E-1 Pa; discharge inception characteristics; discharge mechanisms; discharge path length; discharge profile; electrode configurations; gap space; gas pressure; image processing techniques; insulation breakdown testing; nonuniform electric field; space environment; vacuum; Argon; Dielectrics and electrical insulation; Electrodes; Helium; Image processing; Nonuniform electric fields; Space shuttles; Space stations; Space technology; Voltage;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 1996. Proceedings. ISDEIV., XVIIth International Symposium on
Conference_Location :
Berkeley, CA
Print_ISBN :
0-7803-2906-6
DOI :
10.1109/DEIV.1996.545450
