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DIRECT CURRENT BREAKDOWN VOLTAGE CHARACTERISTICS IN SUPERCRITICAL HELIUM: BREAKDOWN IN NONUNIFORM FIELDS.

Author(s) : NAKAYAMA S., ITO D.

Type of article: Article

Summary

THE PAPER DESCRIBES THE RESULTS OF AN EXPERIMENTAL STUDY ON THE DIRECT CURRENT BREAKDOWN VOLTAGE CHARACTERISTIC OF SUPERCRITICAL HELIUM UNDER A NONUNIFORM ELECTRIC FIELD. THE STUDY WAS CARRIED OUT TO FURTHER THE DEVELOPMENT OF SUPERCONDUCTING MAGNETS COOLED BY SUPERCRITICAL HELIUM. AT A CERTAIN DENSITY VALUE, R, A MAXIMUM BREAKDOWN VOLTAGE IS OBSERVED IN THE BREAKDOWN VOLTAGE VERSUS DENSITY CHARACTERISTIC. IN THE CASE OF A NEGATIVE NEEDLE ELECTRODE, THE BREAKDOWN VOLTAGE IS PROPORTIONAL TO THE DENSITY BELOW R. THE RVERSUS TEMPERATURE CURVE AGREES WELL WITH A PSEUDO-CRITICAL LINE, WHICH IS THE PHASE TRANSITION LINE BETWEEN THE PSEUDO-GAS AND PSEUDO-LIQUID PHASE OF SUPERCRITICAL HELIUM.

Details

  • Original title: DIRECT CURRENT BREAKDOWN VOLTAGE CHARACTERISTICS IN SUPERCRITICAL HELIUM: BREAKDOWN IN NONUNIFORM FIELDS.
  • Record ID : 1986-2156
  • Languages: English
  • Source: Cryogenics - vol. 26 - n. 1
  • Publication date: 1986

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