ALFVEN WAVES AND ROTATION OF COLLISIONAL PLASMAS IN TOKAMAKS

The effect of radio frequency fields on a plasma rotation in the edge (collisional) region of slightly rippled tokamaks is considered. The e xpressions for poloidal and toroidal velocities and for quasistationar y radial electric fields are obtained as a function of absorbed rf pow er. The estimations of these quantities for the Phaedrus-T tokamak [N. Hershkovitz et al., 15th International Atomic Energy Agency Conferenc e on Plasma Physics and Controlled Fusion, Seville, 1994 (Internationa l Atomic Energy Agency, Vienna, in press)] are also presented. It is s hown that Alfven waves can strongly modify the rotation velocities and radial electric fields in collisional regions of tokamak plasmas. (C) 1996 American Institute of Physics.