Abstract
In the edge region of a tokamak, especially during H-mode operation, the values of the radial electric field Er and of its radial derivative dEr/dr are larger than those allowed by the standard neoclassical theory. In this paper we focus our attention to the region where dEr/dr is negative and very large. This gives rise to orbit squeezing and requires a new approach to solve the drift kinetic equation (DKE). In this paper we re-examine the method of the linearized DKE developed by Shaing and Hazeltine and the `global' method due to Hinton and Kim, and we ameliorate the latter by consistently taking the temperature gradient into account.
Original language | English |
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Pages (from-to) | 711-729 |
Number of pages | 19 |
Journal | Plasma Physics and Controlled Fusion |
Volume | 42 |
Issue number | 6 |
DOIs | |
Publication status | Published - Jun 2000 |