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<p><b>Drift Waves in Stellarator Geometry</b></p>

<p><B>Authors:</B> M. Persson, M. Nadeem, J.L.V. Lewandowski, and H.J. Gardner</p>

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<b>Date of PPPL Report:</b> February 2000
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<B>Published in:</B>  Plasma Physics and Controlled Fusion <B>42</B> (February 2000) 203-216</p>

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Drift waves are investigated in a real three-dimensional stellarator geometry. A linear system, based on the cold ion fluid model and a ballooning mode formalism, is solved numerically in the geometry of the stellarator H1-NF. The spectra of stable and unstable modes, as well as localization, are discussed. The dependence of the spectrum of the unstable modes on the wavevector, plasma density variation, and the location in the plasma is presented.

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