Toroidal microinstability studies of high-temperature tokamaks

Journal Article · Wed Jan 31 23:00:00 EST 1990 · Physics of Fluids B; (USA)

DOI:https://doi.org/10.1063/1.859320· OSTI ID:6938378

Rewoldt, G; Tang, W M ^[1]

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1. Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543 (USA)

Results from comprehensive kinetic microinstability calculations are presented, showing the effects of toroidicity on the ion temperature gradient mode and its relationship to the trapped-electron mode in high-temperature tokamak plasmas. The corresponding particle and energy fluxes have also been computed. It is found that, although drift-type microinstabilities persist over a wide range of values of the ion temperature gradient parameter {eta}{sub {ital i}}{equivalent to}({ital d} ln {ital T}{sub {ital i}}/{ital dr})/ ({ital d} ln {ital n}{sub {ital i}}/{ital dr}), the characteristic features of the dominant mode are those of the {eta}{sub {ital i}}-type instability when {eta}{sub {ital i}}{gt}{eta}{sub {ital ic}}{similar to}1.2--1.4 and of the trapped-electron mode when {eta}{sub {ital i}}{lt}{eta}{sub {ital ic}}.

• DOE Contract Number: AC02-76CH03073
• OSTI ID: 6938378
• Journal Information: Physics of Fluids B; (USA), Journal Name: Physics of Fluids B; (USA) Vol. 2:2; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
ANNULAR SPACE
CLOSED CONFIGURATIONS
CLOSED PLASMA DEVICES
CONFIGURATION
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
INSTABILITY
ION TEMPERATURE
LEPTONS
MAGNETIC FIELD CONFIGURATIONS
OSCILLATION MODES
PLASMA
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
SPACE
TEMPERATURE GRADIENTS
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TOROIDAL CONFIGURATION
TRAPPED ELECTRONS