Abstract
By injecting rf power near the lower hybrid frequency into an Ohmically heated plasma near the end of tokamak discharge in the WT-2, an rf-driven current-sustained plasma is produced and continues to exist during the rf injection period, the toroidal current ( kA) being generated by the lower hybrid wave only without the Ohmic power. The efficiency of rf-driven current generation is high and attains kA/kW at the plasma density , with somewhat lower efficiency at higher density.
- Received 21 September 1981
DOI:https://doi.org/10.1103/PhysRevLett.47.1902
©1981 American Physical Society