﻿Radioactivity 
  of 
  Potassium 
  and 
  other 
  Alkali 
  Metals. 
  381 
  

  

  Fie. 
  3. 
  

  

  6.25" 
  Thickness 
  oflrye? 
  

   in 
  mm. 
  

  

  Table 
  III. 
  

   Activity 
  o£ 
  Potassium 
  Salts 
  of: 
  Halogen 
  Group. 
  

  

  Thickness 
  of 
  

  

  salt 
  layer 
  

  

  (uim.). 
  

  

  Activity 
  of 
  salt. 
  

   Saturation 
  current 
  (Arbitrary 
  scale). 
  

  

  Potassium 
  

   Fluoride. 
  

  

  Potassium 
  

   Chloride. 
  

  

  Potassium 
  

   Bromide. 
  

  

  Potassium 
  

   Iodide. 
  

  

  •5 
  

  

  157 
  

  

  100 
  

  

  33-5 
  

  

  64 
  

  

  1-0 
  

  

  165 
  

  

  122-5 
  

  

  72-5 
  

  

  85 
  

  

  20 
  

  

  170 
  

  

  165 
  

  

  110-5 
  

  

  106 
  

  

  4-0 
  

  

  170 
  

  

  166-2 
  

  

  114-4 
  

  

  109 
  

  

  