Excitation, propagation, and damping of electron Bernstein waves in tokamaks

Psfc/ja-01-36 Electron Bernstein Waves in Spherical Tokamaks

In the electron cyclotron range of frequencies, the high-β NSTX plasmas are overdense to the traditional extraordinary X mode and/or the ordinary O mode. For low harmonics of the electron cyclotron frequency, the X and O modes are cutoff at the edge and for high harmonics the plasma is essentially optically thin to these modes. Thus, heating of such plasmas by electron cyclotron waves or diagno...

Current Drive by Electron Bernstein Waves in Spherical Tokamaks

This work was supported by the U.S. Department of Energy, Grant No. DE-FG02-91ER-54109, by the U.S. Department of Energy jointly with the National Spherical Torus Experiment, Grant No. DE-FG02-99ER-54521, and U.S. Department of Energy, Cooperative Grant No. DE-FC0299ER-54512. Reproduction, translation, publication, use and disposal, in whole or in part, by or for the United States government is...

Emission of Electron Bernstein Waves

Emission of electron Bernstein waves in plasmas

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Propagation and Interaction of Electrostatic and Electromagnetic Waves in Two Stream Free Electron Laser in the Presence of Self-Fields

A relativistic theory for two-stream free electron laser (FEL) with a one-dimensional helical wiggler and ion-channel guiding in the presence of self-fields are presented. A dispersion relation (DR) which includes coupling between the electromagnetic and the electrostatic waves is derived from a fluid model, with all of the relativistic terms related to the transverse wiggler motion. This DR is...