LpoundJ absorption OF THE DIFFERENT TYPES OF BETA RAYS 83 



H 1100 S- 

 o 1 r 



:|^y"pfft1"f1-T!t^T:M 



jIM: 



K 1050 



i en 



-!-+--!-+1- 



Hr^-i^r- 



iiièifei:j"ri"TT"r~"i-"r;:t.fakiyë 



Current m Masnet- 

 FIG. 13 



