118 



ISOTOPIC TRACERS AND NUCLEAR RADIATIONS [Chap. 4 



ENERGY IN MEV 

 12 13 



14 



14.8 



12 



T— T- 



! I 1 I ■■!- ' 



; 1 





T 'i . i .v i i ii 



T ^T 



RANGE OF ALPHA PARTICLES IN AIR 



7 to 15 mev 

 15° C, 760 mm. Hg, I = 80.5 ev 



Redrawn from M. S. Livingston and H. Bethe, Rev. Mod 

 Phys. 9, 266 (1937) 





4- 



7^flii 



illlirlJ 



wmi 



8 



22 



20 



2 

 O 



UJ 



o 



z 

 < 

 HI6 or 



4— l-i 



-4-4-4- — 





4-4- 



fr r-r 



.Itnin.l'-M.I'-it, 



J-,;,., iil^r 



H^u 



14 



ENERGY IN MEV 



Fig. 32 



10 



II 



12 



