Spectrum of global ideal-magnetohydrodynamic three-dimensional ballooning modes |
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Authors: | Dewar RL |
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Institution: | (1) Department of Theoretical Physics & Plasma Research Laboratory, The Australian National University, Canberra, ACT, 0200, Australia |
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Abstract: | The class of pressure-driven plasma instabilities known as ballooning modes may be responsible for such diverse phenomena
as high-beta disruptions in tokamaks, solar flares and magnetospheric substorms. In this paper the theory of the spectrum
of unstable eigenvalues of the linearized ideal magnetohydrodynamic (MHD) equations of motion in non-axisymmetric toroidal
equilibria is sketched, comparing and contrasting systems with open field lines and systems with toroidally confined field
lines. The need to regularize ideal MHD to keep the wavenumber finite, and the relevance of quantum chaos theory to understand
the structure of the spectrum, is pointed out.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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Keywords: | ballooning instability quantum chaos stellarator |
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