燃焼ガスプラズマ境界層内での放電モードの分離とアーク発生に関する統計的性質

抄録

The three different discharge regimes of diffuse, micro-arc, and big-arc modes, between the combustion gas plasma flow and the cathode wall, have been clearly separated, and the arc generation behaviors have been statistically investigated using a multichannel analyzer for the measurements of height and frequency of arc pulses. In the micro-arc mode region, the arcs are generated at random, while in the big-arc mode region, the arcs have regularity of generation, which was obtained from the comparison between the Poisson distribution and the probability density function of arc generation. The correlation functions show that the big-arcs are generated continuously, and the micro-arcs often occur again after the decay of the big-arc trigger.