Transport Processes in the Plasma Edge
نویسندگان
چکیده
منابع مشابه
Impurity Transport in 3D Plasma Edge Turbulence
with τe being the electron collision time. nEQ is an equilibrium density associated with neoclassical fields and currents. K (nEQ) =−∇qJPS, which in turn is driven by the corresponding neoclassical potential JPS = 1 C (φPS). The contribution of impurities to the gross plasma density ni,0 is assumed to be negligible, i. e. ni = ni,0+nimp ≈ ni,0. For cold impurities the ion-drift velocity is give...
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where θ is the density of impurities, μθ the collisional diffusivity, and ζ = mθ qθ e mi ρs Ln the influence of inertia, which enters via the polarization drift. The latter makes the flow compressible, consequently for ideal (massless) impurities, ζ = 0 and advection is due to the incompressible electric drift only. In all cases the impurity density is assumed to be so low compared to the bulk ...
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ژورنال
عنوان ژورنال: Fusion Science and Technology
سال: 2008
ISSN: 1536-1055,1943-7641
DOI: 10.13182/fst08-a1709