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Article Dans Une Revue Journal of Physics A: Mathematical and Theoretical Année : 2009

Barriers for the reduction of transport due to the EXB drift in magnetized plasmas

Résumé

We consider a 1 1/2degrees 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).
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Dates et versions

hal-00354173 , version 1 (19-01-2009)

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Natalia Tronko, Michel Vittot, Cristel Chandre, Philippe Ghendrih, Guido Ciraolo. Barriers for the reduction of transport due to the EXB drift in magnetized plasmas. Journal of Physics A: Mathematical and Theoretical, 2009, 42 (42(2009)), pp.085501. ⟨hal-00354173⟩
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