Electron temperature gradient driven turbulence

DOI PDF 被引用文献42件
  • F. Jenko
    Max-Planck-Institut für Plasmaphysik, EURATOM Association, 85748 Garching, Germany
  • W. Dorland
    Max-Planck-Institut für Plasmaphysik, EURATOM Association, 85748 Garching, Germany
  • M. Kotschenreuther
    Max-Planck-Institut für Plasmaphysik, EURATOM Association, 85748 Garching, Germany
  • B. N. Rogers
    Max-Planck-Institut für Plasmaphysik, EURATOM Association, 85748 Garching, Germany

書誌事項

公開日
2000-05-01
DOI
  • 10.1063/1.874014
公開者
AIP Publishing

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説明

<jats:p>Collisionless electron-temperature-gradient-driven (ETG) turbulence in toroidal geometry is studied via nonlinear numerical simulations. To this aim, two massively parallel, fully gyrokinetic Vlasov codes are used, both including electromagnetic effects. Somewhat surprisingly, and unlike in the analogous case of ion-temperature-gradient-driven (ITG) turbulence, we find that the turbulent electron heat flux is significantly underpredicted by simple mixing length estimates in a certain parameter regime (ŝ∼1, low α). This observation is directly linked to the presence of radially highly elongated vortices (“streamers”) which lead to very effective cross-field transport. The simulations therefore indicate that ETG turbulence is likely to be relevant to magnetic confinement fusion experiments.</jats:p>

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