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arXiv physics/0607256physics.plasm-ph
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H模等离子体基座区的强ExB剪切流

Strong ExB shear flows in the pedestal region in H-mode plasma

H. Xia, M. G. Shats, H. Punzmann

摘要:

我们报告的第一个实验观察的H-1环形Heliac的H模式等离子体的基座区域的稳定带状流。E_r切变中的强峰标志着密度基座的顶部和底部。在E_r增大的区域,观测到较强的m=n=0低频(f <0.6kHz)纬向流,表明纬向流对E_r径向分布的空间调制有重要贡献。纬向流的径向局部化与零磁剪切区域和低阶(7/5)有理曲面相关。

英文摘要:

We report the first experimental observation of stationary zonal flows in the pedestal region of the H-mode plasma in the H-1 toroidal heliac. Strong peaks in E_r shear mark the top and foot of the density pedestal. Strong m=n=0 low-frequency (f < 0.6 kHz) zonal flows are observed in regions of increased E_r, suggesting substantial contribution of zonal flows to the spatial modulation of E_r radial profiles. Radial localization of zonal flows is correlated with a region of zero magnetic shear and low-order (7/5) rational surfaces.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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