Further analysis of the eigen-frequency spectrum of a flat two-layer superconducting cable

Abstract

Characteristic frequencies describing the rates of current decay in N -strand flat two-layer superconducting cables are studied. It is shown that these frequencies when assembled in ascending order form N - 1 simple subspectra. To each of these subspectra correspond characteristic currents possessing a certain type of symmetry. For a uniform case, comparison of the characteristic currents with those generated by a time dependent magnetic field has been performed.