Confinement improvement mechanism in very high mode (VH mode)

Journal Article · Mon Jan 31 23:00:00 EST 1994 · Physics of Plasmas; (United States)

DOI:https://doi.org/10.1063/1.870823· OSTI ID:5311581

Shaing, K C ^[1]

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1. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)

The mechanism for confinement improvement in the toroidal-rotation-induced very high mode (VH mode) may be the turbulence suppression due to the shear of the [ital toroidal] angular frequency associated with [ital parallel] flow. This explanation is in contrast to the plausible hypothesis that high-mode (H-mode) confinement improvement may be caused by the turbulence suppression due to the shear of the [ital poloidal] angular frequency associated with [bold E][times][bold B] and parallel flows. Here, [bold E] is the electric field and [bold B] is the magnetic field. A theory for VH mode, based on the rapid change of the radial gradient of the toroidal flow, is presented.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5311581
• Journal Information: Physics of Plasmas; (United States), Journal Name: Physics of Plasmas; (United States) Vol. 1:2; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700310 -- Plasma Confinement-- (1992-)
700330* -- Plasma Kinetics
Transport
& Impurities-- (1992-)
ANNULAR SPACE
CLOSED CONFIGURATIONS
CLOSED PLASMA DEVICES
CONFIGURATION
CONFINEMENT
FLUCTUATIONS
ION TEMPERATURE
MAGNETIC FIELD CONFIGURATIONS
PLASMA
PLASMA CONFINEMENT
ROTATING PLASMA
SPACE
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TOROIDAL CONFIGURATION
TRANSPORT THEORY
TURBULENCE
VARIATIONS