Stabilization of Ballooning Modes by Nonparaxial Cells

Journal Article · Sat Jan 15 00:00:00 EST 2005 · Plasma Physics Reports

DOI:https://doi.org/10.1134/1.1856704· OSTI ID:20717488

Arsenin, V V; Zvonkov, A V; Skovoroda, A A ^[1]

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1. Institute of Nuclear Fusion, Russian Research Centre Kurchatov Institute, pl. Kurchatova 1, Moscow, 123182 (Russian Federation)

An analysis is made of the effect of high-curvature stabilizing nonparaxial elements (cells) on the MHD plasma stability in open confinement systems and in confinement systems with closed magnetic field lines. It is shown that the population of particles trapped in such cells has a stabilizing effect not only on convective (flute) modes but also on ballooning modes, which govern the maximum possible {beta} value. In the kinetic approach, which distinguishes between the effects of trapped and passing particles, the maximum possible {beta} values consistent with stability can be much higher than those predicted by the MHD model.

• OSTI ID: 20717488
• Journal Information: Plasma Physics Reports, Vol. 31, Issue 1; Other Information: Translated from Fizika Plazmy, ISSN 0367-2921, 31, 6-16 (No. 1, 2005); DOI: 10.1134/1.1856704; (c) 2005 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA); TN:; ISSN 1063-780X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BALLOONING INSTABILITY
FLUTE INSTABILITY
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
PLASMA
PLASMA CONFINEMENT
STABILIZATION
TRAPPING