Effect of poloidal asymmetry on the impurity density profile in tokamak plasmas
Journal article, 2011

The effect of poloidal asymmetry of impurities on impurity transport driven by electrostatic turbulence in tokamak plasmas is analyzed. It is found that if the density of the impurity ions is poloidally asymmetric then the zero-flux impurity density gradient is significantly reduced and even a sign change in the impurity flux may occur if the asymmetry is sufficiently large. This effect is most effective in low shear plasmas with the impurity density peaking on the inboard side and may be a contributing factor to the observed outward convection of impurities in the presence of radio frequency heating.


Tünde Fülöp

Chalmers, Applied Physics, Nuclear Engineering

Sara Moradi

Chalmers, Applied Physics, Nuclear Engineering

Physics of Plasmas

1070-664X (ISSN) 1089-7674 (eISSN)

Vol. 18 3 030703-

Driving Forces

Sustainable development


Basic sciences

Subject Categories

Fusion, Plasma and Space Physics

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