Journal
PHYSICS OF PLASMAS
Volume 15, Issue 5, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.2894214
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The scaling of pedestal pressure with global beta, shaping, and toroidal rotation is examined. The pedestal pressure is observed to increase with higher global beta and increased shaping, but is not significantly affected by changes to toroidal rotation. Stability analysis of the pedestal is utilized to extract the respective contributions of pedestal gradient and pedestal width to the scaling of the pedestal pressure. An increase in pedestal width accounts for approximately half of the observed increase in pedestal pressure with improved edge stability. The pedestal width is observed to scale with the normalized pedestal pressure as Delta proportional to beta(1/2)(ped). No ion gyroradius dependence of the pedestal width is observed. (C) 2008 American Institute of Physics.
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