Strong ExB Shear Flows in the Transport-Barrier Region in H-Mode Plasma
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<0.6kHz) 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.
|Collections||ANU Research Publications|
|Source:||Physical Review Letters|
|01_Xia_Strong_ExB_Shear_Flows_in_the_2006.pdf||371.75 kB||Adobe PDF|
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