Different Types of Beta Rays. 



129 



Table I. — Ionization by /3 transmitted Secondary Rays from 

 Tinfoil with Primary Rays reflected down into Chamber. 



! 



Saturation Currents (arbitrary scale) with different 







thicknesses 



, of Tinfoil. 



Current 

 in magnet 





























(amperes). 



I. 



II. 



III. 



IV. 



V. 



VI. 



VII. 



VIII. 





mm. 



mm. 



mm. 



mm. 



mm. 



mm. 



mm. 



mm. 





000 



0-0196 



0-0784 



0-1568 0-3136 



1-254 



1-96 



3-136 



00 



46-6 



423 



27-3 



23-3 



19-4 



16-25 



14-59 



13-08 



0-2 



51-5 



53-9 



29-7 













0-45 



128-4 



84-2 















0-85 



292-0 



196-5 



52-0 



27-0 



20-3 





14-51 



12-87 



1-15 



348-5 



294-8 



860 













1-65 



360-0 



343-2 



152-0 



62-6 



250 







12-73 



22 





327-3 



221-1 



115 





16-19 







2-5 



305-0 









45-8 



1619 





12-66 



32 



170-2 





16T9 









14-44 





4-0 



... 



149-3 





97-4 



62-8 



16-13 





12-61 



5-0 







96-9 



790 



57-0 



16-48 



14-35 



12-45 



66 





81-1 



691 





46-7 





14-21 





7-0 



62-5 



73-4 





58-5 





16-43 





12-29 



100 



34-0 



50-7 



47-1 



45-2 



345 



16-22 



14-02 



12-28 



150 



20-8 



35-4 



29-8 



31-5 



25-7 



15-9 



13-96 



12-22 



200 



16-0 



27-5 



26-5 



25-4 



22-5 



15-64 



13-85 





250 









... 



20-0 



15-51 



13-82 





27-5 





230 



22*2 



22-0 j 









121 





Saturation Current (arbitrary scale) for different 









thicknesse; 



of Tin 



foil. 







Current 

 in magnet. 





































I. 



II. 



III. 



IV. 



V. 



VI. 



VII. 



VIII. 





mm. 



nun. 



mm. 



mm. 



mm. 



mm. 



nun. 



mm. 



00 



00 



0-0196 



0-0784 



01568 



03136 



T254 



1-96 



3-136 



46-6 



41-7 



26-4 



22-1 



191 



16-25 



14-55 



12-82 



0-7 



: 14-7 

















085 





232 



20-9 



20 1 



18-3 





14-34 





1-45 



10-5 

















1-70 







19-5 



190 



18-0 







1256 



1-80 





184 









15 84 







2-5 



... 









17-9 



15-84 





12-52 



38 



76 



17-3 



17-9 



18-2 



177 



15-73 





12-44 



5-0 



... 





17-8 



17-9 



17-6 



15-68 





12-4 



6-6 



7-41 





17-5 



17-8 



173 



15-58 



14-15 



12-36 



7-0 





169 















100 





16-8 







172 



1521 



14-09 



12-26 



12-0 







17-9 



17-6 











15-0 



7-23 



16-6 



17-9 





17-0 



15-29 



139 



1210 



175 



















21-0 



7-14 



16-3 





17-3 



169 



15-17 



13-87 



12-06 



26-5 





16-2 



17 6 



17-2 



16-8 





13-79 





Phil. Mag. S. 6. Vol. .17. No. 97. Jan. 1909. 



K 



