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Strong ExB Shear Flows in the Transport-Barrier Region in H-Mode Plasma

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Date

2006

Authors

Xia, Hua
Shats, Michael
Punzmann, Horst

Journal Title

Journal ISSN

Volume Title

Publisher

American Physical Society

Abstract

We report the first experimental observation of stationary zonal flow in the transport-barrier region of the H-mode plasma. Strong peaks in Er shear mark the width of this region. A strong m=n=0 low-frequency (f<0.6kHz) zonal flow is observed in regions of increased Er, suggesting a substantial contribution of zonal flow to the spatial modulation of Er radial profiles. Radial localization of the zonal flow is correlated with a region of zero magnetic shear and low-order (7/5) rational surfaces.

Description

Keywords

Keywords: Correlation methods; Magnetic fluids; Shear flow; Surface properties; Transport properties; H-mode plasma; Stationary zonal flow; Transport barrier region; Zero magnetic shear; Plasma flow

Citation

URI

http://hdl.handle.net/1885/21682

Collections

ANU Research Publications

Source

Physical Review Letters

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1103/PhysRevLett.97.255003

Restricted until

2037-12-31

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