Title :
Generation of microdischarge in vacuum by CO/sub 2/ gas introduction
Author :
Tsuruta, K. ; Nakamura, M. ; Tajima, K. ; Cherukupalli, S.E.
Author_Institution :
Dept. of Electr. Eng., Ibaraki Univ., Hitachi, Japan
Abstract :
Measurements of microdischarge current waveforms have been made in a vacuum of 3x10/sup -4/ Pa after CO/sub 2/ is introduced into the vacuum chamber. The onset of microdischarge occurred when the voltage between the electrodes exceeded a threshold voltage, and the peak current of the microdischarge increased with increasing CO/sub 2/ pressure. The number of ions which transferred the microdischarge current and the number of molecules which were adsorbed on the electrode surface were compared. A microdischarge model is proposed to explain the experimental results.
Keywords :
carbon compounds; electric breakdown; insulation; spark gaps; 3E-4 Pa; CO/sub 2/ gas introduction; CO/sub 2/ pressure; adsorbed gas effects; adsorbed molecules; discharge between electrodes; experimental results; microdischarge current waveforms; microdischarge in vacuum; microdischarge model; number of ions; number of molecules; peak current; threshold voltage; vacuum chamber; Breakdown voltage; Current measurement; Electrodes; Geometry; Pressure measurement;
Conference_Titel :
Electrical Insulation, 1988., Conference Record of the 1988 IEEE International Symposium on
Conference_Location :
Cambridge, MA, USA
DOI :
10.1109/ELINSL.1988.13879
