Transport of Parallel Momentum by Toroidal Ion
Temperature Gradient Instability near Marginality
Authors: E.S. Yoon and T.S. Hahm
Abstract:
The turbulent angular momentum flux carried by ions resonant with toroidal ion temperature gradient(ITG) instability is calculated via quasilinear calculation using the phase-space conserving gyrokinetic equation in the laboratory frame. The results near ITG marginality indicate that the inward turbulent equipartition (TEP) momentum pinch [Hahm T.S. et al 2007 Phys. Plasmas 14 072302] remains as the most robust part of pinch. In addition, ion temperature gradient driven momentum flux is inward for typical parameters, while density gradient driven momentum flux is outward as in the previous kinetic result in slab geometry [Diamond P.H. et al 2008 Phys. Plasmas 15 012303].
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Submitted to: Nuclear Fusion (October 2009)
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Download PPPL-4467 (pdf 594 KB 12 pp)
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