On the validity of the local diffusive paradigm in turbulent plasma transport

G. Dif-Pradalier; P. H. Diamond; V. Grandgirard; Y. Sarazin; J. Abiteboul; X. Garbet; Ph Ghendrih; A. Strugarek; S. Ku; C. S. Chang

doi:10.1103/PhysRevE.82.025401

On the validity of the local diffusive paradigm in turbulent plasma transport

G. Dif-Pradalier
, P. H. Diamond
, V. Grandgirard
, Y. Sarazin
, J. Abiteboul
, X. Garbet
, Ph Ghendrih
, A. Strugarek
, S. Ku
, C. S. Chang

Research output: Contribution to journal › Article › peer-review

Abstract

A systematic, constructive and self-consistent procedure to quantify nonlocal, nondiffusive action at a distance in plasma turbulence is exposed and applied to turbulent heat fluxes computed from the state-of-the-art full- f, flux-driven gyrokinetic GYSELA and XGC1 codes. A striking commonality is found: heat transport below a dynamically selected mesoscale has the structure of a Lévy distribution, is strongly nonlocal, nondiffusive, scale-free, and avalanche mediated; at larger scales, we report the observation of a self-organized flow structure which we call the " E×B staircase" after its planetary analog.

Original language	American English
Article number	025401
Journal	Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume	82
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevE.82.025401
State	Published - Mar 8 2010
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Statistical and Nonlinear Physics
Statistics and Probability

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10.1103/PhysRevE.82.025401

Cite this

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abstract = "A systematic, constructive and self-consistent procedure to quantify nonlocal, nondiffusive action at a distance in plasma turbulence is exposed and applied to turbulent heat fluxes computed from the state-of-the-art full- f, flux-driven gyrokinetic GYSELA and XGC1 codes. A striking commonality is found: heat transport below a dynamically selected mesoscale has the structure of a L{\'e}vy distribution, is strongly nonlocal, nondiffusive, scale-free, and avalanche mediated; at larger scales, we report the observation of a self-organized flow structure which we call the {"} E×B staircase{"} after its planetary analog.",

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AU - Dif-Pradalier, G.

AU - Diamond, P. H.

AU - Grandgirard, V.

AU - Sarazin, Y.

AU - Abiteboul, J.

AU - Garbet, X.

AU - Ghendrih, Ph

AU - Strugarek, A.

AU - Ku, S.

AU - Chang, C. S.

PY - 2010/3/8

Y1 - 2010/3/8

N2 - A systematic, constructive and self-consistent procedure to quantify nonlocal, nondiffusive action at a distance in plasma turbulence is exposed and applied to turbulent heat fluxes computed from the state-of-the-art full- f, flux-driven gyrokinetic GYSELA and XGC1 codes. A striking commonality is found: heat transport below a dynamically selected mesoscale has the structure of a Lévy distribution, is strongly nonlocal, nondiffusive, scale-free, and avalanche mediated; at larger scales, we report the observation of a self-organized flow structure which we call the " E×B staircase" after its planetary analog.

AB - A systematic, constructive and self-consistent procedure to quantify nonlocal, nondiffusive action at a distance in plasma turbulence is exposed and applied to turbulent heat fluxes computed from the state-of-the-art full- f, flux-driven gyrokinetic GYSELA and XGC1 codes. A striking commonality is found: heat transport below a dynamically selected mesoscale has the structure of a Lévy distribution, is strongly nonlocal, nondiffusive, scale-free, and avalanche mediated; at larger scales, we report the observation of a self-organized flow structure which we call the " E×B staircase" after its planetary analog.

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JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics

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On the validity of the local diffusive paradigm in turbulent plasma transport

Abstract

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