1997•Physics of PlasmasOpen access

Comparison of toroidal viscosity with neoclassical theory

K. Ida, N. Nakajima

Abstract

Toroidal rotation profiles are measured with charge exchange spectroscopy for a plasma heated with tangential neutral beam injection (NBI) in the Compact Helical System (CHS) heliotron/torsatron device [Ida et al., Phys. Rev. Lett. 67, 58 (1991)] to estimate the toroidal viscosity. The toroidal viscosity derived from the toroidal rotation velocity shows good agreement with the neoclassical toroidal viscosity plus the perpendicular viscosity (μ⊥=2 m2/s).

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Key concepts: Toroid, Physics, Viscosity, Plasma, Rotation (mathematics), Perpendicular, Atomic physics, Gyrokinetics