A model realization of self-organized criticality for plasma confinement

被引:211
|
作者
Carreras, BA [1 ]
Newman, D [1 ]
Lynch, VE [1 ]
Diamond, PH [1 ]
机构
[1] UNIV CALIF SAN DIEGO, LA JOLLA, CA 92093 USA
关键词
D O I
10.1063/1.871650
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
A model for plasma transport near marginal stability is presented. The model is based on subcritical 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 observed with perturbative experiments in tokamaks. (C) 1996 American Institute of Physics.
引用
收藏
页码:2903 / 2911
页数:9
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