# Energetic consistency and momentum conservation in the gyrokinetic description of tokamak plasmas

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Comments on the article 'Stability of coupled tearing and twisting modes in tokamaks,' by J.W. Connor, R.J. Hastie and J.B. Taylor, which appeared in the periodical 'Physics of Plasmas.' Derivation of a dispersion relation for toroidally coupled tearing and twisting modes; Importance of...

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Responds to comments made by Ding Li on the article 'Stability of coupled tearing and twisting modes in tokamaks,' which appeared in the journal 'Physics of Plasmas.' Derivation of a dispersion relation for toroidally coupled tearing and twisting modes; Structure of toroidal tearing modes.

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Develops a two-dimensional numerical solution method for the linear gyrokinetic system which describes arbitrary wavelength electromagnetic perturbations in tokamak plasmas. Recovery of magnetohydrodynamic results from the gyrokinetic model; Solution of the gyrokinetic equation for the...

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Presents exact solutions to the Grad-Shafranov equation for ideal magnetohydrodynamic (MHD) tokamak equilibria with dissimilar functional dependences of the pressure and poloidal current source profiles. Parameters of the current density profile; Representation of experimental x-point and...