44 



BELL SYSTEM TECHNICAL JOURNAL 



t 0.4 



0.4 0.5 0.6 



RELATIVE RADIUS 



Fig. 14 — End plate currents in TE 51 mode. 



0.3 



0.4 0.5 0.6 



RELATIVE RADIUS 



0.7 



0.1 0.2 



Fig. 15 — End plate currents in TE 22 mode. 



