Role of turbulence on edge momentum redistribution in the TJ-II stellarator
Physical review letters, 2006•APS
Radial profiles of the parallel-radial Reynolds stress component, proportional to the cross
correlation between parallel and radial fluctuating velocities, have been measured in the
plasma boundary region of the TJ-II stellarator. Experimental results show the existence of
significant parallel turbulent forces at plasma densities above the threshold value to trigger
perpendicular E× B sheared flows. This finding provides the first experimental evidence of
the role of parallel turbulence forces on edge momentum redistribution in fusion devices.
correlation between parallel and radial fluctuating velocities, have been measured in the
plasma boundary region of the TJ-II stellarator. Experimental results show the existence of
significant parallel turbulent forces at plasma densities above the threshold value to trigger
perpendicular E× B sheared flows. This finding provides the first experimental evidence of
the role of parallel turbulence forces on edge momentum redistribution in fusion devices.
Radial profiles of the parallel-radial Reynolds stress component, proportional to the cross correlation between parallel and radial fluctuating velocities, have been measured in the plasma boundary region of the TJ-II stellarator. Experimental results show the existence of significant parallel turbulent forces at plasma densities above the threshold value to trigger perpendicular sheared flows. This finding provides the first experimental evidence of the role of parallel turbulence forces on edge momentum redistribution in fusion devices.
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