Physics of Plasmas Devoted to original contributions to and reviews of the physics of plasmas, including magnetofluid mechanics, kinetic theory and statistical mechanics of fully and partially ionized gases.

[POP Home] [Browse All Online Issues: 1991-1993 | 1994-present ] [Search All Online Issues] [Article Purchases] [SPIN Database: Browse | Search] [Forthcoming Abstracts]    [HELP] [EXIT]

Physics of Plasmas -- April 1995 -- Volume 2, Issue 4 pp. 1029-1031

Existence of core localized toroidicity-induced Alfvén eigenmode

G. Y. Fu

Princeton Plasma Physics Laboratory, Princeton University, P.O. Box 451, Princeton, New Jersey 08543

(Received 4 November 1994; accepted 22 December 1994)

The core-localized toroidicity-induced Alfvén eigenmode (TAE) is shown to exist at finite plasma pressure due to finite aspect ratio effects in tokamak plasma. The new critical beta for the existence of the TAE mode is given by 3+2s², where =r/R is the inverse aspect ratio, s is the magnetic shear and =–Rq²d/dr is the normalized pressure gradient. In contrast, previous critical is given by s². In the limit of sr/R, the new critical is greatly enhanced by the finite aspect ratio effects. ©1995 American Institute of Physics.

DOI: 10.1063/1.871382
PACS: 52.35.Bj, 52.55.Fa, 52.55.Pi        Additional Information

Citing Articles

1. Alfvén continuum and high-frequency eigenmodes in optimized stellarators
   Ya. I. Kolesnichenko et al., Phys. Plasmas 8, 491 (2001)
2. Destabilization of energetic particle modes by localized particle sources
   Fulvio Zonca et al., Phys. Plasmas 7, 4600 (2000)
3. Fast particle finite orbit width and Larmor radius effects on low-n toroidicity induced Alfvén eigenmode excitation
   N. N Gorelenkov et al., Phys. Plasmas 6, 2802 (1999)
4. Alpha particle-driven toroidal Alfvén eigenmodes in Tokamak Fusion Test Reactor deuterium–tritium plasmas: Theory and experiments
   G. Y. Fu et al., Phys. Plasmas 5, 4284 (1998)
5. Plasma compressibility induced toroidal Alfvén eigenmode
   L.-J. Zheng et al., Phys. Plasmas 5, 444 (1998)