Role of Boundary Plasma in Lower-Hybrid-Frequency Heating of a Tokamak

Kazuya Uehara, Takumi Yamamoto, Tsuneyuki Fujii, Norio Suzuki, Tsuyoshi Imai, Satoru Iizuka, Hiroshi Takeuchi, Satoshi Kasai, Hidetoshi Yoshida, Noboru Fujisawa, Takashi Nagashima

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Boundary plasma of a circular tokamak has been investigated by means of electrostatic probes during lower-hybrid heating. The reflection coefficient is affected by the density gradient in front of the launcher. An effective ion heating is performed in the main plasma region when the boundary electron temperature is relatively high enough to suppress the parametric decay instabilities.The simultaneous injection of neutral beams as well as the lower-hybrid wave brings the suppressionof instabilities with increase of the electron temperature coming from the neutral beam heating.

Original languageEnglish
Pages (from-to)1958-1964
Number of pages7
Journaljournal of the physical society of japan
Issue number6
Publication statusPublished - 1982
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


Dive into the research topics of 'Role of Boundary Plasma in Lower-Hybrid-Frequency Heating of a Tokamak'. Together they form a unique fingerprint.

Cite this