On non-zero space average density perturbation effects in tokamak plasma reflectometer signals - ICPP 2004 Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2004

On non-zero space average density perturbation effects in tokamak plasma reflectometer signals

Résumé

The effects of the non-zero average density perturbation on phase and amplitude measured by reflectometry are presented. The non-zero average density perturbation on the phase variation can be seen as an index effect as soon as the shape of the density perturbation does not introduce spectral effects. Amplitude modulation in time follows generally the properties of the cut-off layer seen as a mirror but some specific situations produce a time modulation two times higher than the input time variation of the density perturbation as observed in Tore Supra. The introduction of secondary cut-off can exhibit this effect as shown in 2D simulations.
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Dates et versions

hal-00003160 , version 1 (24-10-2004)

Identifiants

  • HAL Id : hal-00003160 , version 1

Citer

Stephane Heuraux, R. Sabot, F. da Silva, A. Sirinelli, E. Blanco, et al.. On non-zero space average density perturbation effects in tokamak plasma reflectometer signals. 2004. ⟨hal-00003160⟩
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