Title :
Liquid helium breakdown in the μs range
Author :
Suehiro, J. ; Yamasaki, K. ; Hara, M. ; Gerhold, J.
Author_Institution :
Fac. of Eng., Kyushu Univ., Fukuoka, Japan
Abstract :
Breakdown time-lag characteristics in the μs range were investigated with pool boiling liquid helium. An abrupt decrease in the statistical time lag was observed in a low electric field near 0.5 MV/cm and attributed to a change in the breakdown mechanism. Experiments were carried out using a pulse generator with 200 ns rise time and a long decay time constant of more than 1 ms. This generator provides a step voltage to the gap in the μs range
Keywords :
liquid helium-4; 1 mus; 200 ns; breakdown mechanism; decay time constant; liquid He; low electric field; pool boiling liquid helium; pulse generator; statistical time lag; step voltage; Breakdown voltage; Capacitance; Circuit testing; Electric breakdown; Electrodes; Helium; Insulation; Pulse generation; Space vector pulse width modulation; Time measurement;
Conference_Titel :
Conduction and Breakdown in Dielectric Liquids,1993., ICDL '93., IEEE 11th International Conference on
Conference_Location :
Baden-Dattwil
Print_ISBN :
0-7803-0791-7
DOI :
10.1109/ICDL.1993.593975
