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

Volume

39

Issue

11

fYear

2011

Firstpage

2650

Lastpage

2651

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);

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2011.2156816

Filename

5872055