AN ANOMALY IN I-V CHARACTERISTICS AT A POSITIVE CORONA DISCHARGE
Karol Marton - Peter Kapás
An anomaly occurring on the I-V characteristic in the case of a
positive potential on a rod electrode with a small radius of
curvature with respect to a plane electrode is described in this
paper. The anomalous phenomena occur in a narrow voltage range
in a highly non-homogeneous field close to the electrode (E>107
Mathematical and physical analyses of the processes in tight
proximity of the electrode having the above mentioned shape are
performed. Differential equations which analytically and
theoretically describe these phenomena are compiled and solved.
The space charge created by particles (electrons, positive and
negative ions) which cause negative differential conductivity in
the narrow voltage range due to their behaviour in the electric
field plays a substantial role in these phenomena.
Keywords: narrow voltage range, positive unipolar corona discharge, differential negative conductivity, strongly non-homogeneous field, phenomenon of anomaly