Impurity transport studies in tokamak edge plasmas using visible imaging
نویسندگان
چکیده
منابع مشابه
Impurity and trace tritium transport in tokamak edge turbulence.
The turbulent transport of impurity or minority species, as for example tritium, is investigated in drift-Alfvén edge turbulence. The full effects of perpendicular and parallel convection are kept for the impurity species. The impurity density develops a granular structure with steep gradients and locally exceeds its initial values due to the compressibility of the flow. An approximate decompos...
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Tokamak plasma transport equations are usually obtained by flux surface averaging the collisional Braginskii equations. However, tokamak plasmas are not in collisional regimes. Also, ad hoc terms are added for neoclassical effects on the parallel Ohm’s law, fluctuation-induced transport, heating, current-drive and flow sources and sinks, small magnetic field nonaxisymmetries, magnetic field tra...
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Impurity transport driven by electrostatic turbulence is analyzed in weaklycollisional tokamak plasmas using a semi-analytical model based on a boundary-layer solution of the gyrokinetic equation. Analytical expressions for the perturbed density responses are derived and used to determine the stability boundaries and the quasilinear particle fluxes. For moderate impurity charge number Z, the st...
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s of publications 1-5: 1. An ELMy ASDEX Upgrade plasma equilibrium is reconstructed taking into accountthe bootstrap current. The peeling mode stability of the equilibrium is numericallyanalysed using the GATO [1] code, and it is found that the bootstrap current candrive the plasma peeling mode unstable. A high-n ballooning mode stability analysisof the equilibria revealed that,...
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ژورنال
عنوان ژورنال: IEEE Transactions on Plasma Science
سال: 2002
ISSN: 0093-3813
DOI: 10.1109/tps.2002.1003931