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

Abstract : 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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Contributor : Natalia Tronko <>
Submitted on : Monday, January 19, 2009 - 12:01:22 PM
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  • HAL Id : hal-00354173, version 1
  • ARXIV : 0901.2848



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, IOP Publishing, 2009, 42 (42(2009)), pp.085501. ⟨hal-00354173⟩



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