Experimental Investigation on Temporal Evolution of Beam Plasma Discharge

Taro Dodo, Yukio Abe, Seiji Kamata, Ji Han-Tao, Masao Sugawa, Kuniaki Takahashi, Nobuki Kawashima

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


A pulse (∼200 µs) of electron beam (0.3∼1.5 kV, 2∼20 mA) is injected into Argon gas (10-5∼10-4Torr) in a magnetic field (50∼300 G). A two-stream instability develops from low frequency (∼MHz) to high frequency (∼100 MHz) in proportion to the increase of the plasma frequency. When the instability frequency reaches the cyclotron frequency, the wave energy is rapidly transferred by cyclotron damping to the plasma and an ionization avalanche (beam plasma discharge) occurs.

Original languageEnglish (US)
Pages (from-to)173-176
Number of pages4
JournalJapanese Journal of Applied Physics
Issue number1 R
StatePublished - Jan 1990
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Engineering
  • General Physics and Astronomy


  • Beam plasma discharge
  • Cyclotron damping
  • Electron heating
  • Two stream instability


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