Geometry factors for TEsub(omn) resonance cavities for diagnostics of large-diameter plasmas

Mode-suppressing resonators oscillating in TEsub(omn) modes only are suggested here for the diagnostics of large-diameter plasma columns. Circular cylindrical cavities composed of electrically insulated parallel rings have been found to give the best Q values. Geometry factors are presented for TEsub(omn) resonance mode cavities (m = 1,...,7; arbitrary n) for different density profiles and filling ratios, allowing absolute electron density determinations. (Author)