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Article Dans Une Revue Journal of Physics A: Mathematical and Theoretical Année : 2008

Reduction and approximation in gyrokinetics

Résumé

The gyrokinetics formulation of plasmas in strong magnetic fields aims at the elimination of the angle associated with the Larmor rotation of charged particles around the magnetic field lines. In a perturbative treatment or as a time-averaging procedure, gyrokinetics is in general an approximation to the true dynamics. Here we discuss the conditions under which gyrokinetics is either an approximation or an exact operation in the framework of reduction of dynamical systems with symmetry

Dates et versions

hal-00166914 , version 1 (12-08-2007)

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Philippe Ghendrih, Ricardo Lima, R. Vilela Mendes. Reduction and approximation in gyrokinetics. Journal of Physics A: Mathematical and Theoretical, 2008, 41 (46). ⟨hal-00166914⟩
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