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Journal Articles Physics of Plasmas Year : 2018

Impurity density gradient influence on trapped particle modes

Etienne Gravier
Maxime Lesur
J. Médina
  • Function : Author
Thierry Réveillé
T. Drouot
  • Function : Author

Abstract

The effect of the presence of an impurity species on the trapped particle turbulence is studied using the gyro-bounce kinetic code TERESA, which allows the study of Trapped Electron Modes and Trapped Ion Modes. The impurity species is treated self-consistently and its influence on the nature of the turbulence, ion driven or electron driven, is investigated. It is found that the presence of heavy impurities with a flat density profile tends to stabilize the both electron and ion modes, whereas a peaked or hollow impurity density profile can change the turbulence from an electron driven turbulence to an ion driven turbulence. The effect of the turbulence regime on impurity transport is studied.
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Dates and versions

hal-01816870 , version 1 (08-02-2023)

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Cite

M. Idouakass, Etienne Gravier, Maxime Lesur, J. Médina, Thierry Réveillé, et al.. Impurity density gradient influence on trapped particle modes. Physics of Plasmas, 2018, 25 (6), pp.062307. ⟨10.1063/1.5026381⟩. ⟨hal-01816870⟩
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