The collisional drift wave instability in steep density gradient regimes.

  title={The collisional drift wave instability in steep density gradient regimes.},
  author={Markus Held and Matthias Wiesenberger and Alexander Kendl},
  journal={arXiv: Plasma Physics},
The collisional drift wave instability in a straight magnetic field configuration is studied within a full-F gyro-fluid model, which relaxes the Oberbeck-Boussinesq (OB) approximation. Accordingly, we focus our study on steep background density gradients. In this regime we report on corrections by factors of order one to the eigenvalue analysis of former OB approximated approaches as well as on spatially localised eigenfunctions, that contrast strongly with their OB approximated equivalent… 
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