Electrostatic ion cyclotron waves: Plasma heating, frequency shifts and linewidths
Abstract
Ion cyclotron waves cannot be quasilinearly stabilized in Q-machine experiments because the electron distribution function does not have time to flatten while electrons pass through the plasma volume. We invoke a turbulently dissipative (or ‘resonance broadening’) model to explain the observed steady-state mode saturation. We give a qualitative picture of the important nonlinear features and their implications for plasma heating experiments. We extend the turbulently dissipative model to give nonlinear frequency shifts and a description of the mode linewidths in steady-state experiments. Turbulent resistivity is calculated and found to be unobservably small compared to the classical value. Implications for further experiments are discussed.
- Publication:
-
Journal of Plasma Physics
- Pub Date:
- June 1976
- DOI:
- 10.1017/S0022377800019942
- Bibcode:
- 1976JPlPh..15..431B
- Keywords:
-
- Electrostatic Waves;
- Frequency Shift;
- Ion Cyclotron Radiation;
- Plasma Heating;
- Q Devices;
- Spectral Line Width;
- Electron Distribution;
- Energy Dissipation;
- Mathematical Models;
- Plasma Resonance;
- Plasma Turbulence;
- Steady State;
- Plasma Physics