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Disparate Scale Nonlinear Interactions in Edge Turbulence
Author(s) -
Yagi M.,
Itoh S.I.,
Itoh K.,
Diamond P.H.
Publication year - 2008
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.200810002
Subject(s) - nonlinear system , turbulence , physics , tokamak , wave turbulence , instability , plasma , universality (dynamical systems) , zonal flow (plasma) , convection , statistical physics , mechanics , amplitude , classical mechanics , optics , quantum mechanics
In this topical review, we explain the recent achievement in the study of nonlinear interactions, putting an emphasis on the relevance to edge turbulence. First, we start from the survey of the essence in the nonlinear theory of drift wave ‐zonal flows systems, and visit the experimental observations of the nonlinear interactions of tokamak edge turbulence. Secondly, the universality of intermittent convective transport in the SOL of different magnetic devices are shown. Then, we discuss evolution of collisional drift wave instability in the linear plasma configuration, which is bounded by end plates having analogy to SOL plasmas. By introducing the Numerical Linear Device, the intermittent evolution of large‐amplitude instabilities, generation mechanism of the poloidal flow and other nonlinear process are examined. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)