Toroidal microinstability studies of high-temperature tokamaks

Journal Article · Thu Feb 01 00:00:00 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), Vol. 2:2; ISSN 0899-8221
• Country of Publication: United States
• Language: English

Related Subjects

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