Magnetic Braiding Due to Weak Asymmetry

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Abstract
Magnetic surfaces for a plasma with a helical current perturbation ∼ε2 are destroyed by toroidal effects or by a second current perturbation, of incommensurate helicity, and the behavior of magnetic field lines becomes stochastic in layers of relative width ε−l×exp(−π2ε), where l∼2|m1m|+1 with m and m1 the azimuthal mode numbers of the original helical field and of the perturbation.

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