Nonlinear Saturation of Toroidal Alfven Eigenmodes

Journal Article · Mon Jan 30 04:00:00 EST 1995 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.74.698· OSTI ID:6849908

Zonca, F; Romanelli, F; Vlad, G; Kar, C ^[1]

---

1. Associazione EURATOM-Comitato Nazionale per la Ricerca e per lo Sviluppo dell'Energia Nucleare e delle Energie Alternative (ENEA) sulla Fusione, Centro Ricerche Energetiche (CRE) Frascati, CP 65, 00044 Frascati, Rome (Italy)

The saturation of toroidal Alfven eigenmodes (TAE) due to the effect of magnetohydrodynamic (MHD) nonlinearities is analyzed. The saturation level scales as ([ital a]/[ital R][sub 0])[sup 5/2] (the ratio of the minor to the major radius of the torus), and for typical values of the inverse aspect ratio [epsilon]=[ital a]/[ital R][sub 0], it is comparable with that predicted when the saturation mechanism is due to a nonlinear reduction in the energetic particle drive. The MHD saturation mechanism is thus expected to be potentially relevant to the nonlinear TAE dynamics.

• OSTI ID: 6849908
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 74:5; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700340* -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
ALFVEN WAVES
AMPLITUDES
ANNULAR SPACE
ASPECT RATIO
CLOSED CONFIGURATIONS
CONFIGURATION
DATA
EQUILIBRIUM
FLUID MECHANICS
HYDRODYNAMICS
HYDROMAGNETIC WAVES
INFORMATION
MAGNETIC FIELD CONFIGURATIONS
MAGNETOHYDRODYNAMICS
MECHANICS
NONLINEAR PROBLEMS
NUMERICAL DATA
PLASMA
SATURATION
SPACE
TOROIDAL CONFIGURATION