Strong ExB shear flows in the transport-barrier region in H-mode plasma.
نویسندگان
چکیده
We report the first experimental observation of stationary zonal flow in the transport-barrier region of the H-mode plasma. Strong peaks in Er shear mark the width of this region. A strong m = n = 0 low-frequency (f < 0.6 kHz) zonal flow is observed in regions of increased Er, suggesting a substantial contribution of zonal flow to the spatial modulation of Er radial profiles. Radial localization of the zonal flow is correlated with a region of zero magnetic shear and low-order (7/5) rational surfaces.
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عنوان ژورنال:
- Physical review letters
دوره 97 25 شماره
صفحات -
تاریخ انتشار 2006