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

doi:10.1585/pfr.2.007

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

Division of Nuclear Fusion Dynamics

Research output: Contribution to journal › Article › peer-review

Abstract

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 language	English
Article number	007
Journal	Plasma and Fusion Research
Volume	2
DOIs	https://doi.org/10.1585/pfr.2.007
Publication status	Published - 2007

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1585/pfr.2.007

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title = "Townsend avalanche breakdown assisted by radio frequency wave in tokamaks",

abstract = "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.",

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

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AU - Hasegawa, Makoto

AU - Hanada, Kazuaki

AU - Sato, Kohnosuke

AU - Nakamura, Kazuo

AU - Zushi, Hideki

AU - Sakamoto, Mizuki

AU - Idei, Hiroshi

AU - Kawasaki, Shoji

AU - Nakashima, Hisatoshi

AU - Higashijima, Aki

PY - 2007

Y1 - 2007

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AB - 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.

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Townsend avalanche breakdown assisted by radio frequency wave in tokamaks

Abstract

All Science Journal Classification (ASJC) codes

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