Direct observation of ion-Bernstein-wave-induced poloidal flow in TFTR

Shearing of the plasma poloidal rotation velocity was observed during appli cation of ion Bernstein wave power in the Tokamak Fusion Test Reactor. The first evidence of corroboration between measured poloidal velocity shearing and actively induced Reynolds stress effects is presented. A model reprodu ces salient experimental features: The observed sheared flow occurs near th e tritium fifth harmonic cyclotron resonance layer and depends strongly on the tritium density in agreement with the model. Furthermore, the model rep roduces the observed insensitivity of the induced rotation to the tritium d ensity in the region between the third deuterium harmonic layer and the fif th tritium harmonic layer.