Kinetic theory of the ion-temperature-gradient-driven mode in the long wavelength limit

Journal Article · Sun Sep 01 04:00:00 EDT 1991 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.859960· OSTI ID:5306169

Romanelli, F; Chen, L; Briguglio, S ^[1]

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1. Associazione EURATOM-ENEA sulla Fusione, Centro Ricerche Energia, 00044, Frascati, Roma (Italy)

The stability of the ion-temperature-gradient-driven mode in the long wavelength limit is investigated by retaining the kinetic effects associated with the ion transit frequency. The complete trapped electron dynamics is also considered. The toroidal branch is weakly affected by the trapped electron dynamics while the slablike branch is more strongly affected by trapped electrons. The implications of these results for the understanding of the improved confinement regimes observed in the presence of peaked density profiles is also discussed.

• OSTI ID: 5306169
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 3:9; 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
700108* -- Fusion Energy-- Plasma Research-- Wave Phenomena
CONFINEMENT
DRIFT INSTABILITY
ELECTRONS
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
FREQUENCY DEPENDENCE
INSTABILITY
ION TEMPERATURE
KINETIC EQUATIONS
LEPTONS
OSCILLATION MODES
PLASMA
PLASMA CONFINEMENT
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
STABILITY
TEMPERATURE GRADIENTS
TRAPPING