Blob dynamics in TORPEX poloidal null configurations
نویسندگان
چکیده
منابع مشابه
Blob dynamics in TORPEX null point configurations
Introduction Filaments, or blobs, are field aligned plasma structures which have been observed in the scrape of layer of magnetically confined plasmas. These filaments carry particles into the SOL and therefore play a role in determining the profiles during L-mode and inter-ELM H-mode scenarios. While there have been many investigations into the dynamics of such filaments [1, 2], few have conce...
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Plasma blob dynamics on the high-field side in the proximity of a magnetic field null (X point) is investigated in TORPEX. A significant acceleration of the blobs towards the X point is observed. Close to the X point the blobs break apart. The E×B drifts associated with the blobs are measured, isolating the background drift component from the fluctuating contribution of the blob internal potent...
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One month’s worth of POLAR UVI data were subjected to a ‘‘blob’’ analysis to determine the statistical dynamics of substorm features observed in the LBHL band (152-188 nm). Adapted from similar DoD analyses of target images, the analysis consists of finding, on a frame-by-frame basis beginning at substorm onset, the following aspects of an individual auroral feature: peak power (i.e., power of ...
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Propagating filaments of enhanced plasma density, or blobs, observed in 3D numerical simulations of a diverted, neutral-fueled tokamak are studied. Fluctuations of vorticity, electrical potential phi, temperature Te, and current density J parallel associated with the blobs have a dipole structure perpendicular to the magnetic field and propagate radially with large E x B drift velocities (>1 km...
متن کاملBasic investigations of electrostatic turbulence and its interaction with plasma and suprathermal ions in a simple magnetized toroidal plasma
Progress in basic understanding of turbulence and its influence on the transport both of the plasma bulk and of suprathermal components is achieved in the TORPEX simple magnetized torus. This configuration combines a microwave plasma production scheme with a quasi-equilibrium generated by a toroidal magnetic field, onto which a small vertical component is superimposed, simulating a simplified f...
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ژورنال
عنوان ژورنال: Plasma Physics and Controlled Fusion
سال: 2016
ISSN: 0741-3335,1361-6587
DOI: 10.1088/0741-3335/58/12/125003