PPPL-4728

On The Origin Of Tokamak Density Limit Scalings

Authors: D.A. Gates and L. Delgado-Apricio

Abstract: The onset criterion for radiation driven islands [Rebut and Hugon, Plasma Physics and Controlled Nuclear Fusion Research 1984 (Proc. 10th Int. Conf. London, 1984), Vol. 2, IAEA, Vienna, 197, (1985)] in combination with a simple cylindrical model of tokamak current channel behavior is consistent with the empirical scaling of the tokamak density limit [Greenwald, Nucl. Fusion 28 (1988) 2199]. Many other unexplained phenomena at the density limit are consistent with this novel physics mechanism.

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Submitted to: Physical Review Letters (January 2012)

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