Townsend avalanche breakdown assisted by radio frequency wave in tokamaks

Makoto Hasegawa, Kazuaki Hanada, Kohnosuke Sato, Kazuo Nakamura, Hideki Zushi, Mizuki Sakamoto, Hiroshi Idei, Shoji Kawasaki, Hisatoshi Nakashima, Aki Higashijima

Research output: Contribution to journalArticlepeer-review


A simple model of radio frequency wave (RF) assisted breakdown based on Townsend avalanche theory is proposed for the purpose of evaluating the effect of RF on Townsend avalanche breakdown. According to this model, the required minimum electric field for RF-assisted breakdown can be decreased down to half of that for breakdown by the induction electric field alone. The electric field of RF reaches a minimum when the frequency of the RF is equal to the electron cyclotron frequency.

Original languageEnglish
Article number007
JournalPlasma and Fusion Research
Publication statusPublished - 2007

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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