학술논문
Transition of branched positive streamer to non-branched positive streamer with increase of discharge-repetition rate
Document Type
Conference
Author
Source
2014 IEEE 41st International Conference on Plasma Sciences (ICOPS) held with 2014 IEEE International Conference on High-Power Particle Beams (BEAMS) Plasma Sciences (ICOPS) held with 2014 IEEE International Conference on High-Power Particle Beams (BEAMS), 2014 IEEE 41st International Conference on. :1-5 May, 2014
Subject
Language
ISSN
0730-9244
Abstract
This paper presents that the transition mechanism of branched positive streamer to non-branched positive streamer with increase of discharge repetition rate. The time change of gas temperature distribution between the electrodes after occurrence of non-branched positive streamer was visualized by means of laser schlieren method. As a result, residual localized gas heating along the streamer channel was confirmed. From this, it can be considered that a guide effect of streamer by residual plasma including localized gas heating contributes to the formation of non-branched positive streamer. In fact, a streamer head preferentially propagated high temperature region (high E/N region) without branching and a non-branched positive streamer was formed.