A model realization of self-organized criticality for plasma confinement
- 1 August 1996
- journal article
- conference paper
- Published by AIP Publishing in Physics of Plasmas
- Vol. 3 (8) , 2903-2911
Abstract
A model for plasma transport near marginal stability is presented. The model is based on subcri- tical resistive pressure-gradient-driven turbulence. Three-dimensional nonlinear calculations based on this model show effective transport for subcritical mean profiles. This model exhibits some of the characteristic properties of self-organized criticality. Perturbative transport techniques are used to elucidate the transport properties. Propagation of positive and negative pulses is studied. The observed results suggest a possible explanation of the apparent nonlocal effects ob- served with perturbative experiments in tokamaks.Keywords
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