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Abstract

The absorption of power is studied with fluid and gyrokinetic plasma models, when two Alfvén or ion-ion hybrid resonances provide for a weak damping in a partially standing wavefield. Examples chosen in slab and toroidal geometry show that the fluid predictions based on resonance absorption are generally very different from the Landau damping of mode-converted slow waves. They in particular suggest that the continuum damping of toroidal Alfvén eigenmodes (TAE) and the power deposition profiles obtained in the ion-cyclotron range of frequencies (ICRF) using fluid plasma models are very misleading.

Additional information

Authors: JAUN A, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne (CH);APPERT K, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne (CH);VACLAVIK J, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne (CH);VILLARD L, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne (CH);HELLSTEN T, Alfvén Laboratory, Stockholm (SE)
Bibliographic Reference: Article: Physics Review Letters (1997)
Record Number: 199711487 / Last updated on: 1997-11-18
Category: PUBLICATION
Original language: en
Available languages: en
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