Mercier criterion in tokamaks with anisotropic energetic particle component

Journal Article · Mon Feb 28 23:00:00 EST 1994 · Physics of Plasmas; (United States)

DOI:https://doi.org/10.1063/1.870808· OSTI ID:6692023

Zheng, L ^[1]; Tsai, S ^[2]

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1. Max-Planck-Institut fuer Plasmaphysik, IPP-EURATOM Association, 85748 Garching bei Muenchen (Germany)
2. Institute of Physics, Chinese Academy of Sciences, P. O. Box 603, Beijing 100080 (China)

Analytical equilibria for axisymmetric plasmas with an anisotropic energetic-particle component are obtained by expansions in the inverse aspect ratio and core- and hot-plasma betas. Upon the analytical equilibria, the energetic-particle-modified Mercier criterion [L.-J. Zheng and S.-T. Tsai, Phys. Fluids B [bold 4], 1416 (1992)] is evaluated. A drift-nonreversed energetic-particle component is shown to make stabilizing terms to the criterion, which originate from the additional Shafranov shift of magnetic surfaces and the stabilizing kinetic energy contributed by the energetic particles. The results confirm that interchange modes in tokamaks can be stabilized by properly introducing drift-nonreversed energetic particles.

• OSTI ID: 6692023
• Journal Information: Physics of Plasmas; (United States), Journal Name: Physics of Plasmas; (United States) Vol. 1:3; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700340* -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
700370 -- Plasma Fluid & MHD Properties-- (1992-)
ASPECT RATIO
BALLOONING INSTABILITY
CLOSED PLASMA DEVICES
EQUILIBRIUM
HOT PLASMA
INSTABILITY
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC SURFACES
MERCIER CRITERION
MHD EQUILIBRIUM
PLASMA
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES