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Ionization and Breakdown in SF6-Air and Freon-Nitrogen Mixtures

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2 Author(s)
V. N. Maller ; Department of High Voltage Engineering, Indian Institute of Soienoe, Bangalore 560 012, India ; M. S. Naidu

The sparking potentials and swarm coefficients (ionization and attachment coefficients) have been measured in sulphurhexafluoride- air and freon-nitrogen mixtures over the range of 110 ¿ E/p ¿ 240 V cm-1 torr-l and gas pressures varying between 1 and 20 torr, at 20°C. Addition of strongly attaching salphur-hexafluoride and freon gases increased the sparking potentials and the rate of increase of the attachment coefficient with increasing percentage of the strongly attaching gases in the mixtures was much larger than the rate of change of the first ionization coefficient.

Published in:

IEEE Transactions on Plasma Science  (Volume:3 ,  Issue: 2 )