Abstract
Using the normal mode expansion method, the collisional drift waves of the slab plasma in a sheared magnetic field are investigated. In the strong shear parameter regime, \(1{\lesssim}\kappa L_{s}{\ll}m_{i}/m_{e}\) (κ: density gradient, L s : shear length and m i / m e : ion to electron mass ratio), the growth rate is found to be proportional to \(\sqrt{\nu/\omega_{*}}\). The diffusion coefficient is also estimated and a density limitation of high density tokamak is shown.
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