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Enhancement of Residual Zonal Flows in Helical Systems with Equilibrium Radial Electric Fields
Author(s) -
Sugama H.,
Watanabe T.H.
Publication year - 2010
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.200900006
Subject(s) - physics , zonal flow (plasma) , ripple , turbulence , rotation (mathematics) , mechanics , residual , large helical device , electric field , flow (mathematics) , magnetic field , classical mechanics , plasma , tokamak , voltage , geometry , mathematics , algorithm , quantum mechanics , computer science
The collisionless response of the zonal‐flow potential to the initial particle distribution and turbulence source is theoretically described for helical systems with equilibrium radial electric fields driving the poloidal E × B rotation of helical‐ripple‐trapped particles. Theoretically predicted enhancement of the residual zonal‐flow potential due to the E × B rotation is verified by the linear gyrokinetic Vlasov simulation using the poloidally global domain for a model magnetic geometry corresponding to the inward‐shifted LHD configuration (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)