Hr. Koslowski et al., CHARACTERISTICS OF THE Q PROFILE FOR DIFFERENT CONFINEMENT CONDITIONSON TEXTOR-94, Plasma physics and controlled fusion, 39, 1997, pp. 325-336
The multi-channel HCN-polarimeter on TEXTOR-94 has been used to measur
e the plasma current density for a wide range of operation/confinement
conditions. The characteristic features of the safety factor profiles
in discharges with edge-radiation cooling and the application of diff
erent heating scenarios together with a strong impurity influx will be
described. The stabilization of sawteeth and changes in the MHD behav
iour of the plasma is related to modifications of the current density
profile.