Theory of pressure-induced islands and self-healing in three-dimensional toroidal magnetohydrodynamic equilibria

Journal Article · Wed Mar 01 00:00:00 EST 1995 · Physics of Plasmas; (United States)

DOI:https://doi.org/10.1063/1.871369· OSTI ID:6560856

Bhattacharjee, A; Hayashi, T; Hegna, C C; Nakajima, N; Sato, T ^[1]

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1. National Institute for Fusion Science, Nagoya 464-01 (Japan)

The role of singular currents in three-dimensional toroidal equilibria and their resolution by magnetic island formation is discussed from both analytical and computational points of view. Earlier analytical results are extended to include small vacuum islands, which may, in general, have different phases with respect to pressure-induced islands. In currentless stellarators, the formation of islands is shown to depend on the resistive parameter [ital D][sub [ital R]], as well as the integrated effect of global Pfirsch--Schlueter currents. It is demonstrated that the pressure-induced self-healing'' effect, recently discovered computationally, is also predicted by analytical theory.

• DOE Contract Number: FG02-86ER53222; FG02-86ER53218
• OSTI ID: 6560856
• Journal Information: Physics of Plasmas; (United States), Vol. 2:3; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
STELLARATORS
MAGNETIC ISLANDS
COMPUTER CODES
MHD EQUILIBRIUM
PFIRSCH-SCHLUETER REGIME
TOROIDAL CONFIGURATION
ANNULAR SPACE
CLOSED CONFIGURATIONS
CLOSED PLASMA DEVICES
CONFIGURATION
EQUILIBRIUM
MAGNETIC FIELD CONFIGURATIONS
SPACE
THERMONUCLEAR DEVICES
700370* - Plasma Fluid & MHD Properties- (1992-)