Abstract
This paper presents the plasma potential distribution across magnetic field lines in an argon/oxygen plasma created by 13.56 MHz CCRF discharge consisting of a pair of ring electrodes. It is found that the radial plasma density, electron temperature, and plasma potential shows unusual trends as the magnetic field strength and gas pressure increase. An analytical model has been formulated to explain the radial plasma potential profile when the short-circuiting effect due to conducting boundaries can be neglected. It is found that with certain approximations, the plasma potential distribution can be very well related to the local plasma density, electron temperature, and bulk electronegativity similar to a Boltzmann relation.
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