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

Abstract

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

Authors:
; ;  [1]
  1. Plasma Research Laboratory, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200 (Australia)
Publication Date:
OSTI Identifier:
20861529
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 97; Journal Issue: 25; Other Information: DOI: 10.1103/PhysRevLett.97.255003; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ELECTROMAGNETIC FIELDS; H-MODE PLASMA CONFINEMENT; MODE RATIONAL SURFACES; MODULATION; PLASMA

Citation Formats

Xia, H., Shats, M. G., and Punzmann, H. Strong ExB Shear Flows in the Transport-Barrier Region in H-Mode Plasma. United States: N. p., 2006. Web. doi:10.1103/PHYSREVLETT.97.255003.
Xia, H., Shats, M. G., & Punzmann, H. Strong ExB Shear Flows in the Transport-Barrier Region in H-Mode Plasma. United States. doi:10.1103/PHYSREVLETT.97.255003.
Xia, H., Shats, M. G., and Punzmann, H. Fri . "Strong ExB Shear Flows in the Transport-Barrier Region in H-Mode Plasma". United States. doi:10.1103/PHYSREVLETT.97.255003.
@article{osti_20861529,
title = {Strong ExB Shear Flows in the Transport-Barrier Region in H-Mode Plasma},
author = {Xia, H. and Shats, M. G. and Punzmann, H.},
abstractNote = {We report the first experimental observation of stationary zonal flow in the transport-barrier region of the H-mode plasma. Strong peaks in E{sub r} shear mark the width of this region. A strong m=n=0 low-frequency (f<0.6 kHz) zonal flow is observed in regions of increased E{sub r}, suggesting a substantial contribution of zonal flow to the spatial modulation of E{sub r} radial profiles. Radial localization of the zonal flow is correlated with a region of zero magnetic shear and low-order (7/5) rational surfaces.},
doi = {10.1103/PHYSREVLETT.97.255003},
journal = {Physical Review Letters},
number = 25,
volume = 97,
place = {United States},
year = {Fri Dec 22 00:00:00 EST 2006},
month = {Fri Dec 22 00:00:00 EST 2006}
}