Results 211 to 220 of about 2,926 (263)

Buzzing boundaries: tiny caterpillars vibrate to defend leaf tip territories.

J Exp Biol
Matheson SM, Turchen LM, Mauduit E, Yack JE.   +3 more
europepmc   +1 more source

Controlling a new plasma regime. [PDF]

Philos Trans A Math Phys Eng Sci
Lennholm M, Aleiferis S, Bakes S, Bardsley OP, van Berkel M, Casson FJ, Chaudry F, Conway NJ, Hender TC, Henderson SS, Kool B, Lafferty M, Meyer HF, Mitchell J, Mitra A, Osawa R, Otin R, Parrot A, Thompson T, Xia G, The Step Team.   +20 more
europepmc   +1 more source

The GBS code for tokamak scrape-off layer simulations [PDF]

Journal of Computational Physics, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
F D Halpern, P Ricci, Sébastien Jolliet   +2 more
exaly   +5 more sources

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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, V.K. Katiyar, null Sudhanshu   +2 more
openaire   +1 more source

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, Nathan Mattor, Xueqiao Xu   +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

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, X. BONNIN, R. SCHNEIDER, S. KUHN   +3 more
openaire   +3 more sources

Kinetic Effects in the Scrape Off Layer

Contributions to Plasma Physics, 1992
AbstractThe scrape off layer (SOL) of a confined plasma (Fig. 1a) is in many respects in a state far from, thermodynamic equilibrium: The energy diffusing outward from the plasma core across the separatrix is condensed in the thin SOL to a strong energy flux along the magnetic field.
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Modelling of the impurity pumping by a tokamak scrape-off layer

Journal of Nuclear Materials, 1984
Abstract The impurity flow along magnetic field lines in a collisional tokamak scrape-off layer is numerically investigated using a testfluid approach. Transport perpendicular to the magnetic field is approximately included by a local loss time constant τ⊥. Results for various impurities and hydrogen background plasma parameters show the significance
Neuhauser, J., Schneider, W., Wunderlich, R., Lackner, K., Behringer, K.   +4 more
openaire   +2 more sources