Resistive Alfven Spectrum of Tokamak-Like Configurations

摘要

The resistive Alfven spectrum for tokamak-like 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 the ideal Alfven dispersion relation). The normal modes are damped and the eigenvalues lie on specific curves which become independent of resistivity for small eta. (ERA citation 11:026666)