DocumentCode
1324278
Title
Evaluation of bubble breakdown limit in LHe below 4.2 K
Author
Gerhold, J.
Author_Institution
Univ. of Technol., Graz, Austria
Volume
26
Issue
4
fYear
1991
fDate
8/1/1991 12:00:00 AM
Firstpage
679
Lastpage
684
Abstract
An antibubble barrier model which may explain the high breakdown strength of saturated LHe at very low temperatures is presented. The occurrence of the barrier is an intrinsic liquid phenomenon. Up to a threshold field of 40 MV/m, the barrier seems the sole effective obstacle against breakdown. However, adverse extrinsic effects which may prevail under engineering conditions can favor surmounting of the antibubble barrier. Liquid breakdown at lower field stress may therefore be possible in applications
Keywords
bubbles; electric breakdown of liquids; insulating materials; liquid helium; 4.2 K; antibubble barrier model; breakdown strength; bubble breakdown limit; liquid He; threshold field; Breakdown voltage; Electric breakdown; Electrodes; Helium; Insulation; Stress control; Temperature control; Temperature dependence; Testing; Voltage control;
fLanguage
English
Journal_Title
Electrical Insulation, IEEE Transactions on
Publisher
ieee
ISSN
0018-9367
Type
jour
DOI
10.1109/14.83689
Filename
83689
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