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Article Dans Une Revue Plasma Physics and Controlled Fusion Année : 2011

Transport barrier for the radial diffusion due to the ExB drift motion of guiding centers in cylindrical confinement geometry

Résumé

We consider the radial transport of test particles due to the ExB drift motion in the guiding center approximation. Using an explicit expression to modify the electrostatic potential, we show that it is possible to construct a transport barrier which suppresses radial transport. We propose an algorithm for the implementation of this local modification computed from an electrostatic potential known on a spatio-temporal grid. The number of particles which escape the inner region defined by the barrier measures the efficiency of the control. We show that the control is robust by showing a significant reduction of radial transport, when applied with a reduced number of probes aligned on a circle.
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Dates et versions

hal-00542733 , version 1 (03-12-2010)
hal-00542733 , version 2 (11-12-2010)
hal-00542733 , version 3 (10-02-2011)
hal-00542733 , version 4 (06-07-2011)
hal-00542733 , version 5 (07-10-2011)

Identifiants

Citer

Olivier Izacard, Natalia Tronko, Cristel Chandre, Guido Ciraolo, Michel Vittot, et al.. Transport barrier for the radial diffusion due to the ExB drift motion of guiding centers in cylindrical confinement geometry. Plasma Physics and Controlled Fusion, 2011, 53 (12), pp.125008. ⟨10.1088/0741-3335/53/12/125008⟩. ⟨hal-00542733v5⟩
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