Observation of parallel viscosity in a stellarator

Journal Article · Mon Jul 01 04:00:00 EDT 1991 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.67.58· OSTI ID:5541225

Ida, K; Yamada, H; Iguchi, H; Itoh, K

Damping of the plasma toroidal velocity owing to parallel viscosity is observed in the Compact Helical System-torsatron device with tangential neutral-beam injection. The toroidal velocity profile is dominated by perpendicular viscosity when the magnetic-field modulation is weak near the axis. However, parallel viscosity is found to be dominant when the modulation is strong enough, and to increase in proportion to the square of the modulation of the magnetic field. The absolute values of the viscosity agree with the neoclassical prediction within a factor of 3.

• OSTI ID: 5541225
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 67:1; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700103* -- Fusion Energy-- Plasma Research-- Kinetics
ANNULAR SPACE
CLOSED CONFIGURATIONS
CLOSED PLASMA DEVICES
CONFIGURATION
HELIAC STELLARATORS
HELICAL CONFIGURATION
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC FIELDS
PLASMA
ROTATING PLASMA
SPACE
STELLARATORS
THERMONUCLEAR DEVICES
TOROIDAL CONFIGURATION
TORSATRON STELLARATOR
VELOCITY
VISCOSITY