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Home > Radiation Protection > Radioactive Waste Manual > Tables > Commonly Used Isotopes

Commonly Used Isotopes

Isotope Half-Life Emmision
P-32 14.3 days Beta
P-33 25.2 days Beta
S-35 87.2 days Beta
H-3 12.33 years Beta
C-14 5730 years Beta
Cl-36 3.07 e5 years Beta
Tc-99m 6.007 hours Gamma
Cr-51 27.8 days Gamma
I-125 59.7 days Gamma
Sr-85 64.7 days Gamma
I-131 8.06 days Gamma / Beta
Rb-86 18.6 days Gamma / Beta
Ce-141 32.5 days Gamma / Beta
Nb-95 35.1 days Gamma / Beta
Fe-59 45 days Gamma / Beta
Sc-46 83.8 days Gamma / Beta
Zn-65 243 days Gamma / Beta
Na-22 2.6 years Gamma / Beta