Speaker
Dr
Hiroshi Idei
(Research Institute for Applied Mechanics, Kyushu University)
Description
By means of dual 8.2 GHz and 28 GHz waves, the over dense 25 kA plasma with central high energetic-electron pressure was non-inductively built up and sustained for 0.4 s by Electron Bernstein Wave Heating (EBWH) effect between 8.2 GHz fundamental and 2nd harmonic Electron Cyclotron (EC) layers. Spontaneous Density Jumps (SDJs) have been clearly observed at a few times in a shot, and the electron density became over dense for the 8.2 GHz injection. The bulk electron temperature or pressure increased in the over dense region being fundamentally Doppler-shifted resonant with the parallel refractive index N// > 4 for the 8.2 GHz injection. Current-carrying energetic electrons with more than 200 keV were remarkably observed in the over dense region due to the 8.2 GHz EBWH effect.
| Country or International Organization | Japan |
|---|---|
| Paper Number | EX/P4-50 |
Primary author
Dr
Hiroshi Idei
(Research Institute for Applied Mechanics, Kyushu University)
Co-authors
Ms
Aki Higsashijima
(Kyushu University)
Dr
Akira Ejiri
(Graduate School of Frontier Sciences, The University of Tokyo)
Prof.
Atsushi Fukuyama
(Kyoto University)
Hideki Zushi
(Riam Kyushu University)
Mr
Hisatoshi Nakashima
(Kyushu University)
Prof.
Kazuaki Hanada
(Advanced Fusion Research Center, Research Institute for Applied Mechanics, Kyushu University)
Prof.
Kazuo Nakamura
(Kyushu University)
Dr
Makoto Hasegawa
(Kyushu University)
Dr
Osamu Watanabe
(Kyushu University)
Mr
Shoji Kawasaki
(Kyushu University)
Dr
Takumi Onchi
(Kyushu University)
Prof.
Tsuyoshi Imai
(Plasma Research Center, University of Tsukuba)
Dr
Tsuyoshi Kariya
(Plasma Research Center, University of Tsukuba)
Prof.
Yuichi Takase
(University of Tokyo)
Mr
kishore mishra
(Kyushu University)
