Structure of the glow of a nanosecond diffuse discharge in a strongly nonuniform electric field

摘要: The structure of the glow a diffuse discharge in air under atmospheric pressure is studied detail “rod (cathode)-plane” geometry for an electrode gap 10 cm and cathode tip radius from 3 to 2.4 μm. amplitude voltage across was ∼ 220 kV growth rate ∼1013 V/s pulse duration 180 ns. It found that shape strongly depends on tip. For large values radius, multichannel form prevails, which statistically transformed into volume as decreases 5 mm 60 This transition accompanied by decrease current 440 140 A average. ultrasmall radii (2.4–7.7 μm), prevails again increases up ∼300 A.