72 Br. Tate and Dr. Foote on Resonance and Ionization 



Fig. 6. — Sodium. Total Current Curves. 



Accelerating Rrfenftol (Vofff) 



Curves 9a, 10a, and 11a are curves 9, 10. and 11 plotted to the same 

 scale as the partial current curves. 



The applied potentials at which ionization occurs, as indicated by these 

 curves, are corrected for initial potentials similarly selected from the 

 partial current curves. By plotting both types of curves on the same 

 scale, the arbitrariness in the method of selection of points produces no 

 effect upon the magnitude of the corrected potentials. 



Table III.- 



-Resonance and Ionization Potentials for Potassium. 

 Referring to figs. 7 and 8. 



Partial 

 Current. 



Applied Potential 

 at Resonance. 



Resonance 

 Potential. 



Initial 

 Potential. 



Total 

 Current. 



Applied 

 Potential at 

 Ionization. 



Ionization 

 Potential. 



Curve. 



a. 



b. 



b— a. 



Curve. 



5 ... 



6 ... 



c. 



c+ Initial 

 Potential. 



1 



2 



3 '.'.'.'.'.'. 



4 



-06 



1-0 

 10 

 10 



1-0 



1-6 



1 2-2 



i 



y i-05 



j 



20 

 20 



4-2 

 42 



iS :::::: 



11 



12 



13 



14 



+0-45 

 0-5 

 0-5 

 0-5 

 05 

 0-6 

 0-5 



2-0 



2 05 



210 



2-10 



1-90 



22 



2-0 



Mean ... 



1-55 



1-55 



1-60 



1-61 



1-40 



16 



1-5 



15... 

 16... 



29 



2-9 



Mean ... 



40 

 40 



4-1 







1-55 



