Results 211 to 220 of about 2,944 (263)

Phaeoacremonium iranianum - a new corneal pathogen. [PDF]

open access: yesBMC Ophthalmol
Liu X, Lu X, Zheng J, Liu S, Li M.
europepmc   +1 more source

Study of the Ionization Rate in the Scrape-off Layer

Contributions To Plasma Physics, 2004
AbstractThe purpose of this work is to study the effect of multi‐step ionization on the tokamak scrape‐of layer (SOL). Using particle‐in‐cell (PIC) simulations we show that this effect strongly influences the divertor plasma. Our results suggest that, at least for high‐recycling regimes, multi‐step ionization should necessarily be included in SOL ...
Siegbert Kuhn, David Tskhakaya
exaly   +2 more sources

Boundary layer theory of the scrape-off layer

Journal of Nuclear Materials, 1987
Abstract The study of flows in the fusion boundary layer of a diffusing, large aspect ratio, Tokamak plasma has been undertaken with the help of boundary layer theory. Analysis in the cylindrical geometry shows that the density gradients in the bulk plasma are mild as opposed to the boundary layer region near the edge where the plasma decays by ...
K.M. Srivastava   +2 more
openaire   +1 more source

Computational Modelling of a Purely Neoclassical Scrape-Off Layer

Contributions to Plasma Physics, 2002
We study the Scrape-off Layer of ASDEX Upgrade in a scenario where the neoclassical transport phenomena are dominant with respect to the anomalous contributions. To represent such a neoclassical scenario, we implemented the expressions for the energy and momentum radial transport, toroidicity effects being introduced automatically by the tokamak ...
SUBBA, Fabio   +3 more
openaire   +3 more sources

Scrape‐Off Layer Turbulence Theory

Contributions to Plasma Physics, 1994
AbstractA review is presented of recent developments in the theory of fluctuations in tokamak scrape‐off layers. A brief summary of typical experimental features is presented, followed by derivation of a flute‐mode dispersion relation including conducting‐wall, curvature, axial E × B shear and radial compression drives.
Ronald H. Cohen   +2 more
openaire   +1 more source

On defining scrape-off layer widths

Plasma Physics and Controlled Fusion, 1999
A physically motivated, theoretical basis for defining scrape-off layer (SOL) widths is proposed. Applying it to theoretical models proposed for transport in the SOL shows how the width is affected by the form of the cross-field transport and the parallel transport to target plates. For a cross-field diffusivity and a parallel loss time , the estimate
J W Connor, P Helander
openaire   +1 more source

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