Breakdown characteristics of cryogenic gaseous helium in uniform electric field and space charge modified non-uniform field

M. Hara, Junya Suehiro, H. Matsumoto

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)787-794
Number of pages8
JournalCryogenics
Volume30
Issue number9
DOIs
Publication statusPublished - Jan 1 1990

Fingerprint

Helium
Electric space charge
Cryogenics
coronas
cryogenics
space charge
breakdown
helium
Electric fields
electric fields
electric field strength
electron states
positive ions
electrical faults
boiling
Boiling point
atmospheric pressure
flow distribution
bubbles
Electric breakdown

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Breakdown characteristics of cryogenic gaseous helium in uniform electric field and space charge modified non-uniform field. / Hara, M.; Suehiro, Junya; Matsumoto, H.

In: Cryogenics, Vol. 30, No. 9, 01.01.1990, p. 787-794.

Research output: Contribution to journalArticle

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