Plasma Physics and Controlled Fusion · 2010 · 90 citations · 39 references
Natural SciencesNuclear EngineeringPhysicsFlow VisualizationPlasma PhysicsRadiation TransportHigh-temperature PlasmasMagnetized PlasmaPlasma ConfinementPlasma DiagnosticsPlasma TransportPlasma TurbulenceLangmuir ProbesProbability Density FunctionsRadial ProfilesSaturation CurrentScrape-off Layer PhysicsScrape-off Layer TransportTurbulence In High-temperature PlasmasTurbulence In Magnetized Plasmas
The intermittent character of turbulent transport is investigated with Langmuir probes in the scrape-off layer and across the separatrix of ASDEX Upgrade Ohmic discharges. Radial profiles of plasma parameters are in reasonable agreement with results from other diagnostics. The probability density functions of ion-saturation current fluctuations exhibit a parabolic relation between skewness and kurtosis. Intermittent blobs and holes are observed outside and inside the nominal separatrix, respectively. They seem to be born at the edge of the plasma and are not the foothills of avalanches launched in the plasma core. A strong shear flow was observed 1 cm radially outside the location where blobs and holes seem to be generated.
39
Transport by intermittent convection in the boundary of the DIII-D tokamak
J.A. Boedo, D.L. Rudakov, R. A. Moyer et al. · Physics of Plasmas · 2001 · 354 citations · Full text
Edge turbulence measurements in toroidal fusion devices
S. J. Zweben, J.A. Boedo, O. Grulke et al. · Plasma Physics and Controlled Fusion · 2007 · 331 citations
Measurements and modelling of electrostatic fluctuations in the scrape-off layer of ASDEX
M. Endler, H. Niedermeyer, L. Giannone et al. · Nuclear Fusion · 1995 · 288 citations