A new capacitive/resistive probe method for studying magnetic surfaces

Sumio Kitajima, Masakazu Takayama, Tatsuya Zama, Kazuhiro Takaya, Nobunao Takeuchi, Hiroshige Watanabe

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


A new capacitive/resistive probe method for mapping the magnetic surfaces from resistance or capacitance between a magnetic surface and a vacuum vessel was developed and tested. Those resistances and capacitances can be regarded as components of a simple electrical bridge circuit. This method exploits electrical transient response of the bridge circuit for a square pulse. From equiresistance or equicapacitance points, the magnetic surface structure can be deduced. Measurements on the Tohoku University Heliac, which is a small-size standard heliac, show good agreement with numerical calculations. This method is particularly useful for pulse-operated machines.

Original languageEnglish
Pages (from-to)2606-2610
Number of pages5
JournalJapanese journal of applied physics
Issue number10R
Publication statusPublished - 1991 Oct
Externally publishedYes


  • Electron beam
  • Heliac
  • Magnetic island
  • Magnetic surface
  • Nuclear fusion
  • Plasma physics
  • Stellarator

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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