Edge plasma characteristics during ICRF heating on JFT-2M Tokamak
| Autor: | Hisato Kawashima, Toshihiko Yamauchi, Tatsuma D. Matsuda, Satoshi Kasai, T. Kawakami, Takaaki Fujita, Hiroshi Tamai, K. Ohasa, Kazuo Odajima, Hikosuke Maeda, Takumi Yamamoto, Toru Ogawa, Y.M. Miura, Norio Suzuki, H. Matsumoto, Yoshihiko Uesugi, H. Aikawa, Seio Sengoku, Teruaki Shoji, Katsumichi Hoshino, Hiroaki Ogawa, M. Mori |
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| Rok vydání: | 1990 |
| Předmět: |
Electron density
Tokamak Materials science Mechanical Engineering Plasma Edge (geometry) law.invention Nuclear Energy and Engineering law Impurity Electric field Electron temperature General Materials Science Antenna (radio) Atomic physics Computer Science::Information Theory Civil and Structural Engineering |
| Zdroj: | Fusion Engineering and Design. 12:25-29 |
| ISSN: | 0920-3796 |
| DOI: | 10.1016/0920-3796(90)90060-j |
| Popis: | The roles of the edge plasma are investigated with respect to impurity release, antenna loading, and H-mode transition. Metal impurity release is considered to be caused by an RF electric field near the antennas, and can be reduced by the out-of-phase operation. Antenna loading with H-mode plasmas is dependent on the antenna-separatrix distance, and can be increased for sufficiently small separation. Electron temperature and electron density in the edge are the key parameters for H-mode transition, and they are the same, independent of the additional heating methods, and of the impurity level. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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