Intrinsic rotation driven by non-Maxwellian equilibria in Tokamak plasmas.

Intrinsic rotation driven by non-Maxwellian equilibria in Tokamak plasmas.

The effect of small deviations from a Maxwellian equilibrium on turbulent momentum transport in tokamak plasmas is considered. These non-Maxwellian features, arising from diamagnetic effects, introduce a strong dependence of the radial flux of cocurrent toroidal angular momentum on collisionality: A...

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Päätekijät: Barnes, M, Parra, F, Lee, J, Belli, E, Nave, M, White, A
Aineistotyyppi: Journal article
Kieli:English
Julkaistu: 2013
Kuvaus
Yhteenveto:The effect of small deviations from a Maxwellian equilibrium on turbulent momentum transport in tokamak plasmas is considered. These non-Maxwellian features, arising from diamagnetic effects, introduce a strong dependence of the radial flux of cocurrent toroidal angular momentum on collisionality: As the plasma goes from nearly collisionless to weakly collisional, the flux reverses direction from radially inward to outward. This indicates a collisionality-dependent transition from peaked to hollow rotation profiles, consistent with experimental observations of intrinsic rotation.

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