Mode Coupling Stabilization of the Dissipative Trapped Electron Instability.
NAVAL RESEARCH LAB WASHINGTON D C
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The nonlinear theory of one-dimensional mode-coupling stabilization for the dissipative trapped electron instability is presented. This nonlinear process couples unstable modes at low wave number to damped waves at high wave number. The regions of parameter space in which this process is applicable are carefully specified, and the saturated wave spectra and anomalous transport coefficients are calculated numerically for a range of parameters of interest for large Tokamak operation. The transport coefficients calculated are expected to be upper bounds and yet are appreciably smaller than the unusual gammak squared estimated in moderate and high temperature regimes.
- Fusion Devices (Thermonuclear)
- Plasma Physics and Magnetohydrodynamics