Anomalous Transport and Stabilization of Collisionless Drift-Wave Instabilities

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Abstract
The nonlinear evolution of collisionless drift-wave instabilities and the associated plasma transport have been studied extensively using particle-code simulations. It is found that the quasilinear decay of the density profile gives rise to the nonlinear saturation. The results also indicate that a new mechanism of wave absorption is responsible for the observed anomalous energy transport, which, in general, is larger than the corresponding particle diffusion and is also less sensitive to shear.