16 



If) 



S '2 

 < 



S. 

 z 



a. 



cc 



o 



u 

 to 



z 

 o 



Q. 

 <0 

 UJ 



cr 



a. 

 o 



I- 

 o 



UJ 

 H 

 UJ 

 O 



UJ 



w 



z 

 o 

 a. 



iij 

 cc 



cc 

 O 



H- 

 O 



UJ 



t- 



UJ 



o 



(C) NARROW-BAND NOISE POWER, 

 f=372 MC 



20 

 15 



10 



10 



_l 



UJ e 

 5 



o 



UJ 



a 



2 4 6 8 10 12 14 16 



Z IN INCHES ALONG DRIFT TUBE (0 IS 0.95"FROM ANODE) 

 B = 1ie.O GAUSS, B(- = +2.6 GAUSS, V=2200 VOLTS, I =40.4 MA PEAK 



18 



Fig. 5 — A procedure similar to that in Fig. 4 was followed, with four ripple 

 wavelengths between anode and reference plane. The cyclotron frequency here 

 is 329.5 me. 



863 



