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Hamiltonian four-field model for nonlinear tokamak dynamics (1987)

Hazeltine, R. D. ; Hsu, C. T. ; Morrison, P. J.

[S.l.] : American Institute of Physics (AIP)

Physics of Fluids 30 (1987), S. 3204-3211

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ISSN: 1089-7666

Source: AIP Digital Archive

Topics: Physics

Notes: The Hamiltonian four-field model is a simplified description of nonlinear tokamak dynamics that allows for finite ion Larmor radius physics, as well as other effects related to compressibility and electron adiabaticity. Much simpler than some previous descriptions of the same physics, it still preserves essential features of the underlying exact dynamics. In particular, because it is a Hamiltonian dynamical system it conserves the appropriate Casimir invariants, as well as avoiding implicit, unphysical dissipation. Here the model is derived and interpreted, its Hamiltonian nature is demonstrated, and its constants of motion are extracted.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.866527

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