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Title: Long-Range Time Correlations in Plasma Edge Turbulence

Analysis of the edge plasma fluctuation in several confinement devices reveals the self-similar character of the fluctuations through the presence of long-range time correlations. These results show that the tail of the autocorrelation function decays as a power law for time lags longer than the decorrelation time and as long as times on the order of the particle diffusion time. The algebraic decay of the long-range time correlations is consistent with plasma transport characterized by self-organized criticality. {copyright} {ital 1998} {ital The American Physical Society}
Authors:
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Publication Date:
OSTI Identifier:
604440
DOE Contract Number:
AC05-96OR22464
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 80; Journal Issue: 20; Other Information: PBD: May 1998
Research Org:
Oak Ridge National Laboratory
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION; TURBULENCE; PLASMA CONFINEMENT; FLUCTUATIONS; TRANSPORT; TIME DEPENDENCE; CORRELATION FUNCTIONS; DIFFUSION