2014年
Direct Measurement of Ion Temperature and Poloidal Rotation Velocity with Doppler Spectroscopy during Bifurcation in Tohoku University Heliac
Plasma and Fusion Research
- 巻
- 9
- 号
- 0
- 開始ページ
- 3402051
- 終了ページ
- 3402051
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1585/pfr.9.3402051
- 出版者・発行元
- Japan Society of Plasma Science and Nuclear Fusion Research
Electrode biasing experiments were carried out in the Tohoku University Heliac (TU-Heliac) to investigate the role of ion viscosity maxima in the L-H transition. To investigate the relation between ion viscosity and poloidal Mach number, the driving force of the poloidal rotation and poloidal rotation velocity must be normalized by the ion temperature Ti and ion pressure Pi. Doppler spectroscopy was used to directly measure the ion temperature and the poloidal rotation velocity. Therefore, the dependence of the ion temperature and poloidal rotation velocity on the electrode current was obtained. The relation between the normalized driving force of the poloidal rotation and the poloidal Mach number Mp was non-linear. Bifurcation phenomena in the poloidal rotation appeared at Mp ~ -3. These results qualitatively agreed with the neoclassical theory.
- リンク情報
- ID情報
-
- DOI : 10.1585/pfr.9.3402051
- ISSN : 1880-6821
- eISSN : 1880-6821
- SCOPUS ID : 84945294701