共 97 条
Plasma edge cross-field transport: experiment and theory
被引:38
作者:

Carreras, BA
论文数: 0 引用数: 0
h-index: 0
机构:
Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
机构:
[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
关键词:
fluctuations;
plasma turbulence;
intermittency;
nondiffusive transport;
D O I:
10.1016/j.jnucmat.2004.10.034
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
In recent years, the basic physics picture of plasma transport in the scrape-off layers of tokamaks and stellarators has changed. This basic picture was based on slow diffusive cross-field transport competing with fast parallel transport. However, the idea of a local diffusive cross-field transport picture is not compatible with sonic of the experimental findings. Cross-field particle fluxes have an intermittent character. Large transport events can be responsible for a large portion of the total integrated flux. Those measurements also show the existence of long-range correlations in time and space. These correlations break down a possible separation of scales that was the base in deriving the macroscopic transport models. Structures are not limited to density fluctuations; they also appear on edge flows. The interaction between fluctuations and flows becomes one of the most important issues in the plasma edge dynamics. (c) 2004 Elsevier B.V. All rights reserved.
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页码:315 / 321
页数:7
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