, Volume 35, Issue 11, pp 980-986
Date: 05 Dec 2009

Measurement of sheared flows in the edge plasma of the CASTOR tokamak

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access


The ion saturation current and floating potential are measured with high temporal (1 µs) and spatial (2.5 mm) resolutions at the plasma edge of the CASTOR tokamak by two poloidally spaced radial arrays of Langmuir probes. The radial electric field and the phase velocity of plasma fluctuations are estimated. The position of the velocity shear layer (VSL) is localized with a high precision. The shearing rate ω E × B determined and found to be comparable with the inverse of the correlation time of fluctuations 1/τac outside the VSL and about five times higher in the proximity of the VSL. A small impact of the shear on fluctuation level at the VSL is observed also in the statistic parameters of the U fl and I sat.

Published in Russian in Fizika Plazmy, 2009, Vol. 35, No. 11, pp. 1059–1065.
The article is published in the original.