Page 202 - Radiation Safety
P. 202
Radionuclides Half life (T )
1/2
90
Strontium-90 ( Sr) 28.5 yrs
Caesium-137 ( 137 Cs) 30.1 yrs
Radium-226 ( 226 Ra) 1600 yrs
14
Carbon-14 ( C) 5736 yrs
8
40
Potassium-40 ( K) 1.28 x 10 yrs
38
