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E × B shear suppression of turbulence in diverted H-mode plasmas: role of edge magnetic shear
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https://doi.org/10.1088/0029-5515/53/9/093005Abstract
We show that strong edge magnetic shear, which is generic to divertor plasmas, makes the E × B shearing of turbulence eddys in toroidal geometry more effective. From calculations of the E × B shearing rates for KSTAR edge parameters, we conclude that the enhanced magnetic shear at the diverted KSTAR plasma edge facilitates E × B shear suppression of turbulence and ensuing H-mode transition. © 2013 IAEA, Vienna.
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