252 WheelocJc — Nature of Ionization Produced hj a Rays. 



B 



C 



Pressure 



Volts / cm. 



Citrrent 



% lack sat 





5 



7-07 



9-2 





10 



7-21 



7-4 



354- 



20 



7-24 



7-1 



40 



7-6 



2-5 





100 



7-76 



0-4 





200 



7-79 



0-0 





5 



3-97 



5-5 





10 



3-99 



5-0 



224- 



20 



4-06 



3-4 





100 



4-11 



2'1 





400 



4-20 



0-0 



For curves see fig. 9. 



Fig. 9. 



14 



10 



"S 6 



5 3 



o 



1 

















e 





^ 









A 















( 























r 



. — &■ — I 





< 



B 

































e 





r 









c 





































10 20 



40 



60 



80 



100 



Volts per cm. 



Fig. 9.— a, Pressure of 544-7->'" Hg. B, Pressure of 354-0""" Hg. 

 C, Pressure of 324-0""" Hg. 



D 



Source O'^" from tbe middle of the chamber. 



224-. 



5 



5-34 



5-7 



10 



5-5 



2-8 



20 



5-53 



2-3 



100 



5-66 



0-0 



400 



5-66 



0-0 



