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research article

Resistive interchange modes in negative central shear tokamaks with peaked pressure profiles

Chu, M. S.
•
Greene, J. M.
•
Lao, L. L.
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1996
Physical Review Letters

Resistive interchange modes can be driven unstable by large pressure gradients in the negative central magnetic shear (NCS) region of advanced tokamaks. Localized stability analysis reveals that the resistive interchange stability criterion (D-R less than or equal to 0) is violated in this region, and unstable n = 1 localized resistive magnetohydrodynamic (MHD) modes are computed using the resistive MHD code MARS. In DIII-D NCS plasmas, these instabilities appear as bursting MHD activities, constituting the first identification of resistive interchange in a high temperature tokamak experiment. These bursts also appear to play a role in triggering disruptions.

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Type
research article
DOI
10.1103/PhysRevLett.77.2710
Web of Science ID

WOS:A1996VH76700029

Author(s)
Chu, M. S.
Greene, J. M.
Lao, L. L.
Miller, R. L.
Bondeson, A.
Sauter, O.  orcid-logo
Rice, B. W.
Strait, E. J.
Taylor, T. S.
Turnbull, A. D.
Date Issued

1996

Published in
Physical Review Letters
Volume

77

Issue

13

Start page

2710

End page

2713

Subjects

ITER

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
CRPP  
SPC  
Available on Infoscience
April 16, 2008
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/21393
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