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Fast-wave current drive above the slow-wave density limit.

  • Author(s): Sheehan, DP
  • McWilliams, R
  • Wolf, NS
  • Edrich, D
  • et al.
Abstract

Fast-wave and slow-wave current drive near the mean gyrofrequency were compared in the Irvine Torus. The slow-wave current drive density limit observation was extended by an order of magnitude in wave frequency compared to previous tokamak results. At low densities, the fast-wave antenna was observed to launch slow waves which drove currents that suffered from the current drive density limit identical to waves launched from the slow-wave antenna. At higher densities, current was driven by the fast-wave antenna while none was driven by the slow-wave antenna. © 1990 The American Physical Society.

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