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Barriers for the reduction of transport due to the E × B drift in magnetized plasmas

Funded under: FP7-EURATOM

Abstract

We consider a 1 1/2 degrees of freedom Hamiltonian dynamical system, which models the chaotic dynamics of charged test particles in a turbulent electric field, across the confining magnetic field in controlled thermonuclear fusion devices. The external electric field E = -V is modeled by a phenomenological potential V and the magnetic field B is considered uniform. It is shown that by introducing a small additive control term to the external electric field, it is possible to create a transport barrier for this dynamical system. The robustness of this control method is also investigated. This theoretical study indicates that alternative transport barriers can be triggered without requiring a control action on the device scale as in present internal transport barriers (ITB).

Additional information

Authors: TRONKO N, Centre de Physique Theorique, Marseille (FR);VITTOT M, Centre de Physique Theorique, Marseille (FR);CHANDRE C, Centre de Physique Theorique, Marseille (FR);GHENDRIH PH, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);CIRAOLO G, M2P2, UMR 6181, Technopole de Chateau Gombert, Marseille (FR)
Bibliographic Reference: An article published in: Journal of Physics A: Mathematical and Theoretical, Volume 42 (2009), 18pp.
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://dx.doi.org/10.1088/1751-8113/42/8/085501
Record Number: 200910384 / Last updated on: 2009-09-22
Category: PUBLICATION
Original language: en
Available languages: en
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