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A global approach for calculating resistive drift modes is developed, which does not use a ballooning formalism but solves the three-dimensional eigenvalue problem directly. The drift-wave model is based on linearized two-fluid equations with cold ions and electrostatic perturbations. For an axisymmetric model equilibrium results from the global approach are compared to those following from a ballooning approximation. For consistent equilibria the global approach is used to investigate the structure of resistive drift modes in tokamak configurations with positive/negative shear as well as in straight and toroidal l=2 - stellarator configurations.

Additional information

Authors: KLEIBER R, Max-Planck-Institut für Plasmaphysik, Teilinstitut Greifwald (DE)
Bibliographic Reference: An article published in: Physics of Plasmas, Vol.8, No.9 (2001), pp.4090-4095
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