Scaling of plasma turbulence suppression with velocity shear

Autor: Boedo, J.A., Gray, D.S., Terry, P.W., Jachmich, S., Tynan, G.R., Conn, R.W., Team, TEXTOR-94
Zdroj: Nuclear Fusion; February 1, 2002, Vol. 42 Issue: 2 p117-121, 5p
Abstrakt: The scaling of plasma turbulence, turbulent particle flux and cross-phase with shear in the edge of the TEXTOR-94 tokamak is obtained from measurements from fast scanning probes and compared with various existing analytical theories. It is found that the scaling can be expressed as a second order polynomial and that the cross-phase plays a key role in the suppression of particle flux. The variable rate of shear, kept below the value required to produce a low to high particle confinement transition, was obtained by changing, on a shot to shot basis, the voltage applied to an electrode introduced 4 cm into the plasma.
Databáze: Supplemental Index