Abstract
A nonlinear analysis of the dynamic behavior of dissipative drift-waves is developed. Near the neutral stable point, the time-dependent Ginzburg-Landau equation with complex coefficients is derived from the two-fluid equations which describe the dissipative drift-waves, by means of reductive perturbation. The convective cell excited by the nonlinear self-interaction of a linearly stable drift-wave is undamped and is adiabatically enslaved by the drift-wave. The system composed of the drift-wave and convective cell self-organizes as the external magnetic field exceeds a certain critical value and tends asymptotically to a stable nonequilibrium state (nonlinear saturation). The saturation level of a single, linearly unstable drift-wave in a non-isothermal plasma is obtained as a function of critical wavenumber, density gradient scale length, plasma temperature and magnetic field.
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