Common Radioactive Isotopes Produced During Nuclear Reactions

Isotope Half-life Isotope Half-life Isotope Half-life



Relatively Short Half-Lives
Strontium-89 54 days Zirconium-95 65 days Niobium-95 39 days
Ruthenium-103 40 days Rhodium-103 57 min. Rhodium-106 30 seconds
Iodine-131 8 days Xenon-133 8 days Tellurium-134 42 minutes
Barium-140 13 days Lanthanum-140 40 hours Cerium-141 32 days



Year to Century-Scale Half-Lives
Hydrogen-3 12 years Krypton-85 10 years Strontium-90 29 years
Ruthenium-106 1 year Cesium-137 30 years Cerium-144 1.3 years
Promethium-147 2.3 years Plutonium-238 85.3 years Americium-241 440 years
Curium-224 17.4 years



Longer Half-Lives
Technecium-99 2 x 106 y Iodine-129 1.7 x 107 y Plutonium-239 24,000 y
Plutonium-240 6,500 y Americium-243 7,300 y