MODIFICATION OF PLASMA EDGE FLUCTUATIONS USING ELECTROSTATIC PROBES IN KEDA TOKAMAK-5C

The experiments to characterize the modification of edge fluctuations using electrostatic probes have been performed on Keda Tokamak-5C (KT- SC) [World Survey of Activities in Controlled Fusion Research, Nuclear Fusion Special Supplement (International Atomic Energy Agency, Vienna , 1991), p. 190]. The results show that the externally excited perturb ation propagates in the direction of electron directional movement. Th e observed phenomena are mainly related to the electrons, and can be w ell explained by the proposed dynamic theory of the ballistic mode. Th e experimental correlation coefficient and the longitudinal dispersion relation are in good agreement with the proposed ballistic model. (C) 1997 American Institute of Physics.