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Strong "quantum" chaos in the global ballooning mode spectrum of three-dimensional plasmas

Dewar, Robert; Cuthbert, P; Ball, Rowena


The spectrum of ideal magnetohydrodynamic (MHD) pressure-driven (ballooning) modes in strongly nonaxisymmetric toroidal systems is difficult to analyze numerically owing to the singular nature of ideal MHD caused by lack of an inherent scale length. In this paper, ideal MHD is regularized by using a k-space cutoff, making the ray tracing for the WKB ballooning formalism a chaotic Hamiltonian billiard problem. The minimum width of the toroidal Fourier spectrum needed for resolving toroidally...[Show more]

CollectionsANU Research Publications
Date published: 2001
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.86.2321


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