Intrinsic Rotation Driven by Non-Maxwellian Equilibria in Tokamak Plasmas
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Barnes_Intrinsic-rotation-driven.pdf
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Author(s)
Belli, E. A.
Nave, M. F. F.
Barnes, Michael
Parra Diaz, Felix Ignacio
White, Anne E.
Lee, Jungpyo
Date Issued
August 2013
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Barnes, M. et al. “Intrinsic Rotation Driven by Non-Maxwellian Equilibria in Tokamak Plasmas.” Physical Review Letters 111.5 (2013). © 2013 American Physical Society
Version
Final published version
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 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.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Plasma Science and Fusion Center
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.111.055005
