Bulletin of the American Physical Society
49th Annual Meeting of the Division of Plasma Physics
Volume 52, Number 11
Monday–Friday, November 12–16, 2007; Orlando, Florida
Session GP8: Poster Session III: Turbulence, Transport, and NL Processes; Fast Ignition and Laser-Plasma Interactions; Divertors, Edge Physics and Fueling; MHD Theory, Heating and Current Drive; Simulation: MHD; Optimal Helicon Source Performance
Tuesday, November 13, 2007
Rosen Centre Hotel Room: Grand Ballroom, 9:30am - 12:30pm
Abstract ID: BAPS.2007.DPP.GP8.76
Abstract: GP8.00076 : Generation mechanisms of blobs in tokamak edge plasmas.
Preview Abstract Abstract
(University of Saskatchewan)
Meso-scale structures, driven by curvature and gradB effects, like blobs and ELMs play a very important role in edge and SOL plasma transport in tokamaks. Once these meso-scale structures formed, they exhibit clear convective behavior propagating mainly toward the wall at low B-field side of the torus. The main features of convection mechanisms are relatively well understood. It is widely believed that generation of ELMs is triggered by peeling-ballooning instability. But, the mechanism (-s) and the rate of blob generation are not clear yet. Here we present both analytic and modeling results describing the mechanisms of the blob generation triggered by sub-critical phenomena related to the ballooning drive.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2007.DPP.GP8.76
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