Nuclide | Half-life | Type of radiation |
---|---|---|
Uranium-238 | 4.5 billion years | Alpha |
Uranium-235 | 700 million years | Alpha |
Uranium-234 | 250,000 years | Alpha |
Plutonium-239 | 24,000 years | Alpha |
Americium-241 | 430 years | Alpha/Gamma |
Plutonium-240 | 6,600 years | Alpha |
Plutonium-241 | 14 years | Beta |
Tritium | 12 years | Beta |