Abstract
Nonlinear behaviors of low frequency drift instability and interchange instability in a hot electron plasma are analyzed. Nonlinear coupled equations describing evolution of perturbed densities are derived. Saturated amplitudes of plasma perturbations are found. Effects of the hot electron component on the saturated amplitudes are discussed. The amplitude of perturbed density of the drift wave is about 20%, and that of the interchange mode is about 5%. The amplitudes of plasma perturbations vanish if the hot electron component satisfies the linear stability criteria of the instabilities.
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