Parameters of peripheral plasma fluctuations in the FT-2 tokamak

Abstract

Probe measurements in a peripheral plasma region of the FT-2 tokamak have been performed in experiments with lower hybrid heating and during the subsequent transition to an improved confinement regime. The average characteristics of high-density plasma structures and the velocity of their propagation in the radial and poloidal directions are determined by the conditional averaging technique and compared to the results obtained using some other methods of data processing. It is established that a quasi-coherent mode can exist on the inner side of the torus.