C^SIUM-OXYGEN-SILVER PHOTOELECTRIC CELL 

 TABLE 3 



359 



400 



100 



CELL D-POSITION 1 

 o- INITIAL READINGS 

 • -ATTER RELEASING O^ AND 



3 HRS. AT ROOM TEMP 

 4- AFTER 6 HRS. AT 75° C. 

 X- AFTER 5 MINS. AT 200° C 

 0- AFTER 10 MINS. AT 200° C 



6000 



7000 



8000 

 WAVELENGTH IN A 



9000 



10000 



Fig. 13 — Relative spectral response to equal energ>' for cell D, position 1. 



of the orifice, and ^ is the angle between r and the normal to the 

 surface. The constants for the three cells presented and the rates 

 of deposition of caesium at the various positions are shown in Table 3, 

 where / is the mean temperature during the time of observation, 

 and Wcs is the rate of deposition of caesium in micrograms per square 

 centimeter per hour. In the last column are shown the equivalent 

 number of atomic layers of caesium that would be deposited per hour 

 upon a plane surface. As before, these values must be divided by 



