Comment on 'Turbulent equipartition theory of toroidal momentum pinch' [Phys. Plasmas 15, 055902 (2008)]

Journal Article · Sun Mar 15 04:00:00 EDT 2009 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3096712· OSTI ID:21274223

Peeters, A G ^[1]; Angioni, C ^[2]; Strintzi, D ^[3]

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1. Department of Physics, Centre for Fusion, Space and Astrophysics, University of Warwick, CV4 7AL Coventry (United Kingdom)
2. Euratom Association IPP Garching, Max Planck Institut fuer Plasmaphysik, Boltzmannstrasse 2, 85748 Garching (Germany)
3. Department of Electrical and Computer Engineering, Association Euratom-Hellenic Republic, National Technical University of Athens, GR-157 73 Athens (Greece)

The comment addresses questions raised on the derivation of the momentum pinch velocity due to the Coriolis drift effect [A. G. Peeters et al., Phys. Rev. Lett. 98, 265003 (2007)]. These concern the definition of the gradient, and the scaling with the density gradient length. It will be shown that the turbulent equipartition mechanism is included within the derivation using the Coriolis drift, with the density gradient scaling being the consequence of drift terms not considered in [T. S. Hahm et al., Phys. Plasmas 15, 055902 (2008)]. Finally the accuracy of the analytic models is assessed through a comparison with the full gyrokinetic solution.

• OSTI ID: 21274223
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 3 Vol. 16; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CORIOLIS FORCE
DENSITY
PLASMA
PLASMA CONFINEMENT
SCALING
TURBULENCE