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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}
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| Authors: |
Carreras, B.A.;
Newman, D.E. [Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-8070 (United States)];
van Milligen, B.;
Pedrosa, M.A.;
Balbin, R.;
Hidalgo, C.;
Sanchez, E.;
Frances, M.;
Garcia-Cortes, I. [Asociacion Euratom-Ciemat, 28040 Madrid (Spain)];
Bleuel, J.;
Endler, M. [Max-Planck-Institut fuer Plasmaphysik, Euratom Association, 85740 Garching (Germany)];
Davies, S.;
Matthews, G.F. [JET Joint Undertaking, Abingdon, Oxon, OX14 3EA (United Kingdom)]
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| Publication Date: | 1998 May 01 |
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| OSTI Identifier: | 604440 |
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| DOE Contract Number: | AC05-96OR22464 |
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| Resource Type: | Journal Article |
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| Resource Relation: | Journal Name: Physical Review Letters; Journal Volume: 80; Journal Issue: 20; Other Information: PBD: May 1998 |
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| Research Org: | Oak Ridge National Laboratory |
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| Country of Publication: | United States |
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| Language: | English |
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| Format: | Size: pp. 4438-4441 |
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| Other Number(s): | Journal ID: PRLTAO; ISSN 0031-9007; TRN: 98:005054 |
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| Subject: | 70 PLASMA PHYSICS AND FUSION; TURBULENCE; PLASMA CONFINEMENT; FLUCTUATIONS; TRANSPORT; TIME DEPENDENCE; CORRELATION FUNCTIONS; DIFFUSION |
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| Update Date: | 2009 Dec 16 |
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