Intrinsic rotation driven by non-Maxwellian equilibria in tokamak plasmas
Plasma Physics
2013-08-09 v1
Abstract
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 co-current 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.
Cite
@article{arxiv.1304.3633,
title = {Intrinsic rotation driven by non-Maxwellian equilibria in tokamak plasmas},
author = {M. Barnes and F. I. Parra and J. P. Lee and E. A. Belli and M. F. F. Nave and A. E. White},
journal= {arXiv preprint arXiv:1304.3633},
year = {2013}
}
Comments
5 pages, 3 figures