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Fast wave flow drive in a two‐component plasma with low minority ion concentration

Fast wave flow drive in a two‐component plasma with low minority ion concentration is investigated. It is found that strongly sheared poloidal flow can be generated in a small region near the hybrid ion–ion resonance due the rapid spatial variation of the plasma velocity response to the fast wave electric field. The flow drive depends strongly on local plasma temperatures and is shown to be very effective in the edge region of a tokamak where the plasma temperature is low. The result is applied to a discussion of shear flow suppression of edge turbulence.