42 



BELL SYSTEM TECHNICAL JOURNAL 



2z 



"■a 



0.4 0.5 0.6 



RELATIVE RADIUS 



Fig. 10 — End plate currents in TE 41 mode. 



2 -0.2 



»- -0.4 



0.4 0.5 0.6 



RELATIVE RADIUS 



1.0 



Fig. 11 — End plate currents in TE 12 mode. 



