Title :
Positive Pulsed Streamer in Supercritical Carbon Dioxide
Author :
Ihara, Takeshi ; Kiyan, Tsuyoshi ; Katsuki, Sunao ; Furusato, Tomohiro ; Hara, Masanori ; Akiyama, Hidenori
Author_Institution :
Grad. Sch. of Sci. & Technol., Kumamoto Univ., Kumamoto, Japan
Abstract :
A positive pulsed streamer in a needle-to-plane gap in supercritical carbon dioxide was observed by using a laser schlieren method. The treelike streamer is initiated at a needle electrode when the electric field reaches approximately 9 MV/cm and propagates spatially toward a plane electrode. The streamer is accompanied by the cylindrical and spherical shock waves. A low-density region along the streamer channel decays with time, and no bubble formation occurs finally.
Keywords :
carbon compounds; discharges (electric); electrodes; plasma diagnostics; plasma shock waves; cylindrical shock wave; laser schlieren method; low-density region; needle electrode; needle-to-plane gap; positive pulsed streamer; spherical shock wave; streamer channel decays; supercritical carbon dioxide; treelike streamer; Carbon dioxide; Discharges; Electrodes; Lasers; Needles; Shock waves; Streaming media; Carbon dioxide; pulsed discharge; schlieren; shock wave; streamer; supercritical fluids (SCFs);
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2011.2156816
