A tearing mode energy principle for an axisymmetric force-free plasma

Ming-Sheng Chu; M. S. Chance; J. M. Greene; T. H. Jensen

doi:10.1063/1.859105

A tearing mode energy principle for an axisymmetric force-free plasma

Ming-Sheng Chu, M. S. Chance, J. M. Greene, T. H. Jensen

College of Sciences

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

A self-adjoint, gauge invariant stability functional δW_TG for determination of a sufficient condition of tearing mode stability is obtained for a plasma with a uniform pressure. The plasma is stable if there is no free energy available to support energy flux into the singular layer. The Δ′ concept, valid in simple geometries, is generalized to reflect variation of equilibrium quantities on the flux surface. The relationship of δW_TG to the ideal stability functional and other possible forms of tearing mode stability functionals is clarified through gauge transformations.

Original language	English
Pages (from-to)	62-67
Number of pages	6
Journal	Physics of Fluids B
Volume	1
Issue number	1
DOIs	https://doi.org/10.1063/1.859105
Publication status	Published - 1989 Jan 1

All Science Journal Classification (ASJC) codes

Computational Mechanics
Condensed Matter Physics
Mechanics of Materials
Physics and Astronomy(all)
Fluid Flow and Transfer Processes

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10.1063/1.859105

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A tearing mode energy principle for an axisymmetric force-free plasma

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