Measurement of central toroidal rotation in ohmic Tore Supra plasmas
Measurement of central toroidal rotation in ohmic Tore Supra plasmas
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DOI：
10.1088/0029-5515/40/3/303
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发表时间：
2000-03
期刊：
影响因子：
3.3
通讯作者：
A. Romannikov;C. Bourdelle;J. Bucalossi;T. Hutter;P. Platz;F. Saint-Laurent
中科院分区：
文献类型：
--
作者：
A. Romannikov;C. Bourdelle;J. Bucalossi;T. Hutter;P. Platz;F. Saint-Laurent
首次同时测量了欧姆等离子体核心中主要 (D+) 和重杂质 (Cr22+) 离子的环形旋转速度。对于主要离子，使用了五个中性粒子（电荷交换）分析仪的系统，其中一个具有近切线的视线。 Cr22+ 离子的速度是通过高分辨率晶体光谱仪观察到的 X 射线的多普勒频移获得的。两种离子都沿与等离子体电流相反的方向移动。速度在 20-40 km/s 范围内。有强有力的迹象表明，环形运动是由纹波损耗产生的径向电场驱动的，正如新古典输运理论所预期的那样。
The first simultaneous measurements of the toroidal rotation velocities of main (D+) and heavy impurity (Cr22+) ions in the core of ohmic plasmas are presented. For the main ions a system of five neutral particle (charge exchange) analysers is used, one having a near tangential line of sight. The velocities of the Cr22+ ions are obtained from the Doppler shift of X ray lines observed with a high resolution crystal spectrometer. Both ion species move in the direction opposite to the plasma current. The velocities are in the range 20-40 km/s. There is a strong indication that the toroidal motion is driven by the radial electric field created by ripple losses, as expected from neoclassical transport theory.