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It is shown that a relevant control of Hamiltonian chaos is possible through suitable small perturbations whose form can be explicitly computed. In particular, it is possible to control (reduce) the chaotic diffusion in the phase space of a Hamiltonian system with 1.5 degrees of freedom which models the diffusion of charged test particles in a �turbulent� electric field across the confining magnetic field in controlled thermonuclear fusion devices. Though still far from practical applications, this result suggests that some strategy to control turbulent transport in magnetized plasmas, in particular tokamaks, is conceivable.

Additional information

Authors: CIRAOLO G, CPT-CNRS, Marseille (FR);CHANDRE C, CPT-CNRS, Marseille (FR);LIMA R, CPT-CNRS, Marseille (FR);VITTOT M, CPT-CNRS, Marseille (FR);PETTINI M, Istituto Nazionale di Astrofisica, Osservatorio Astrofisico di Arcetri, Firenze(IT);GHENDRIH PH, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: An oral paper given at: 20th IAEA Fusion Energy Conference Organised by: International Atomic Energy Agency, Vienna (AT) Held at: Centrtro de Fusao Nuclear, Vilamoura (PT)
Availability: Available from Association EURATOM-CEA, Departement de Recherches sur la Fusion Controlee, CEA Cadarache, F-13108 St Paul-Lez-Durance, France Tel: (+33) 4 42 25 70 01; Fax: (+33) 4 42 25 64 21 E-mail:
Record Number: 200518110 / Last updated on: 2005-05-20
Original language: en
Available languages: en