TY - JOUR
T1 - Breakdown characteristics of cryogenic gaseous helium in uniform electric field and space charge modified non-uniform field
AU - Hara, M.
AU - Suehiro, J.
AU - Matsumoto, H.
N1 - Funding Information:
This work was supported in part by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture, Japan and the cooperative research funds of the Kyushu Electric Power Corporation.
PY - 1990/9
Y1 - 1990/9
N2 - D.c. breakdown characteristics of gaseous helium in uniform and non-uniform electric fields down to 4.2 K at atmospheric pressure have been investigated. Although helium is a nonelectronegative gas, a negative pulse corona is observed only near the normal boiling point due to the abrupt appearance of quasi-bubble state electrons. Positive ion space charge modifies the electric field distribution in the gap space considerably. The electric field strength on the non-corona electrode in the ion flow field is measured satisfactorily and analysed theoretically using a numerical electric field calculation technique. On the basis of experimental results, methods are proposed to give corona onset criteria and the breakdown voltage preceded by a positive glow corona.
AB - D.c. breakdown characteristics of gaseous helium in uniform and non-uniform electric fields down to 4.2 K at atmospheric pressure have been investigated. Although helium is a nonelectronegative gas, a negative pulse corona is observed only near the normal boiling point due to the abrupt appearance of quasi-bubble state electrons. Positive ion space charge modifies the electric field distribution in the gap space considerably. The electric field strength on the non-corona electrode in the ion flow field is measured satisfactorily and analysed theoretically using a numerical electric field calculation technique. On the basis of experimental results, methods are proposed to give corona onset criteria and the breakdown voltage preceded by a positive glow corona.
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U2 - 10.1016/0011-2275(90)90276-I
DO - 10.1016/0011-2275(90)90276-I
M3 - Article
AN - SCOPUS:38249018351
SN - 0011-2275
VL - 30
SP - 787
EP - 794
JO - Cryogenics
JF - Cryogenics
IS - 9
ER -