CjESIUM-OXYGEN-SILVER photoelectric cell 347 



5 3 



e 



C) 



o 



DIAMETER CORRESPONDING TO 

 TEN MICROAMPERES PER LUMEN 



o 



C) 



OOO 



o 



c 



o 



10 



26 



30 



14 18 22 



OXYGEN TO CAESIUM RATIO 



Fig. 5 — Integral sensitivity as a function of ratio and weight of caesium chromate 

 for a 15-minute heat treatment. 



18 22 



OXYGEN TO CAESIUM RATIO 



Fig. 6 — Integral s :nsitivity as a function of ratio and weight of caesium chromate 

 for a 30-minute heat treatment. 



