5th INTERNATIONAL CONFERENCE ON THE FRONTIERS OF PLASMA PHYSICS AND TECHNOLOGY

18-22 April 2011, Singapore, Republic of Singapore


ELECTRICAL CHARACTERIZATION OF ATMOSPHERIC PRESSURE DBD IN AIR

P. Shrestha 1, U.M. Joshi 2, D. P. Subedi 2

1 Central Department of Physics, Tribhuvan University, Kirtipur, Kathmndu,Nepal
2 Department of Natural Sciences, Kathmandu University, Dhulikhel, Nepal


Abstract.  Atmospheric pressure dielectric barrier discharge (DBD) in air was generated between two rectangular copper electrodes covering the lower electrode with a dielectric (glass or polycarbonate -PC) using low frequency (line frequency-50Hz) high voltage power supply. The discharge was studied for inter-electrode gap spacing in the range of 2 mm 5 mm and their influence on breakdown voltage. Voltage-current characteristics and the analysis of the distribution of current pulses per half cycle of the current waveform indicated that the discharge is more uniform in 3 mm inter-electrode gap spacing with PC as a dielectric rather than glass.

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