Abstract
Density-gradient-driven dissipative drift instabilities in a hot electron plasma are studied. Dispersion relation (including that of resistivity and viscosity) is derived. Hot electron ring can reduce growth rate of the instability and anomalous transport flux. Stability condition for the drift wave is βh>4ξ/(l + 2ξ). The fluctuation levels and the exciting region of drift mode are measured, and the stabilizing effects of hot electron ring observed. It is found that the experimental results are consistent with the theoretical predictions.
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