DocumentCode
2005197
Title
Liquid helium breakdown in terms of temperature and electrode roughness
Author
Gerhold, J.
Author_Institution
Tech. Univ., Graz, Austria
fYear
1993
fDate
19-23 Jul 1993
Firstpage
254
Lastpage
258
Abstract
DC-breakdown in near-saturated liquid helium is impeded by an effective barrier against bubble extension. The field strength needed for runaway up to a self-sustaining discharge has been calculated using an antibubble barrier model for various electrode surface roughness as in the temperature range 2.5-4.5 K. Cathode surface roughness has a dominant influence. A significant loss of stability has been found at very low temperatures, which makes surface asperities much more impairing
Keywords
liquid helium; 2.5 to 4.5 K; DC-breakdown; He; bubble extension; cathode surface roughness; effective barrier; electrode roughness; electrode surface roughness; field strength; self-sustaining discharge; surface asperities; Cathodes; Electric breakdown; Electrodes; Helium; Rough surfaces; Stability; Surface discharges; Surface impedance; Surface roughness; Temperature distribution;
fLanguage
English
Publisher
ieee
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
Type
conf
DOI
10.1109/ICDL.1993.593949
Filename
593949
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