Abstract
The sawtooth oscillations in tokamak discharges with Ohmic and neutral-beam heating could be suppressed when a large part of the plasma current was driven by lower hybrid waves (). The stabilization is due to a flattening of the current profile and an increase of above 1. Higher central electron temperatures are obtained with neutral-beam heating if the sawteeth are stabilized. The increase in total energy content in this case was 30% higher than in the presence of sawteeth.
- Received 2 June 1986
DOI:https://doi.org/10.1103/PhysRevLett.57.1137
©1986 American Physical Society