TY - JOUR
T1 - Experimental investigation of dc electrical breakdown of long vapour bubbles in capillaries
AU - Bruggeman, Peter
AU - Leys, Christophe
AU - Vierendeels, Jan
PY - 2007/4/7
Y1 - 2007/4/7
N2 - The dc electrical breakdown of long vapour bubbles in capillaries generated by external heating of the capillary is studied. The fluid columns in the capillary on both sides of the vapour bubble serve as electrodes for the electrical discharges inside the bubble. When a dc voltage is applied across a static vapour bubble, a self-pulsing corona regime is observed, which is followed by a transient spark. The sparking or breakdown voltage of the vapour bubble decreases with increasing conductivity of the NaCl solution. After the transient spark a constricted glow-like discharge is observed in the bubble whilst the bubble expands due to the energy deposition of the discharge. Electrical and optical emission properties of the corona, spark and glow-like regime are discussed.
AB - The dc electrical breakdown of long vapour bubbles in capillaries generated by external heating of the capillary is studied. The fluid columns in the capillary on both sides of the vapour bubble serve as electrodes for the electrical discharges inside the bubble. When a dc voltage is applied across a static vapour bubble, a self-pulsing corona regime is observed, which is followed by a transient spark. The sparking or breakdown voltage of the vapour bubble decreases with increasing conductivity of the NaCl solution. After the transient spark a constricted glow-like discharge is observed in the bubble whilst the bubble expands due to the energy deposition of the discharge. Electrical and optical emission properties of the corona, spark and glow-like regime are discussed.
UR - http://www.scopus.com/inward/record.url?scp=33947419409&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33947419409&partnerID=8YFLogxK
U2 - 10.1088/0022-3727/40/7/016
DO - 10.1088/0022-3727/40/7/016
M3 - Article
AN - SCOPUS:33947419409
SN - 0022-3727
VL - 40
SP - 1937
EP - 1943
JO - Journal of Physics D: Applied Physics
JF - Journal of Physics D: Applied Physics
IS - 7
M1 - 016
ER -