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DOI http://dx.doi.org/10.1063/1.871955
Title Stationary turbulent spectra of toroidal{eta}{sub{ital i}} mode
Creator/Author Pakyari, A. ; Pavlenko, V.P. [Department of Technology, EURATOM-NFR Fusion Association, Uppsala University, P.O. Box 534, S-751 21 Uppsala (Sweden)]
Publication Date1996 Oct 01
OSTI IdentifierOSTI ID: 383781
Other Number(s)PHPAEN; ISSN 1070-664X
Resource TypeJournal Article
Resource RelationPhysics of Plasmas ; VOL. 3 ; ISSUE: 10 ; PBD: Oct 1996
Subject70 PLASMA PHYSICS AND FUSION ; DRIFT INSTABILITY; TURBULENCE; TOKAMAK DEVICES; ENERGY SPECTRA; KINETIC EQUATIONS; MONTE CARLO METHOD; RANDOM PHASE APPROXIMATION; DIAMAGNETISM
Related SubjectPOWER SPECTRA
Description/Abstract Toroidal ion temperature gradient (ITG) driven drift mode turbulence has been analyzed analyti- cally and numerically. By using weak nonlinearity arguments and random phase approxima- tion, dynamic and wave kinetic equations are derived. Three different nonlinearities, namely{bold E{times}B}, convective, and diamagnetic nonlinearities, play important roles in the turbulent spectral transfer. The power spectra of the weak ITG-mode turbulence are obtained analytically for{vert_bar}{bold k}{vert_bar}{gt}1 and{vert_bar}{bold k}{vert_bar}{lt}1 ranges in the wave number space. Forward energy cascading due to convective and diamagnetic nonlinearities will balance the inverse energy cascading due to{bold E{times}B} nonlinearity at{vert_bar}{bold k}{vert_bar}{approx_equal}1/{rho}{sub{ital s}} ({bold k} is the wave number,{rho}{sub{ital s}}={ital c}{sub{ital s}}/{omega}{sub{ital ci}}, where{ital c}{sub{ital s}} is the sound velocity and{omega}{sub{ital ci}} is the ion cyclotron frequency) and results in energy condensation at{vert_bar}{bold k}{vert_bar}{approx_equal}1/{rho}{sub{ital s}}.{copyright}{ital 1996 American Institute of Physics.}
Country of PublicationUnited States
LanguageEnglish
Formatpp. 3628-3635 ; PL:
System Entry Date2001 May 05

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