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The resistive Alfvén spectrum for tokamaklike configurations with one or two singular surfaces is analyzed by combined WKBJ treatment and numerical solution using a spectral code. It is found that the ideal continua disappear; these are approximated only at the end points, at the singular surfaces, and at selected interior points (given by extrema of ωA(r)=‖k ⋅ B0‖/(ρ0)1/2). The normal modes are damped and the eigenvalues lie on specific curves that become independent of resistivity for small η.
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Kerner et al. (1986) studied this question.
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