Decay Mode and Half-life of Uranium 232

Decay mode and Half-life of Uranium 232

  • Uranium 232 decays via alpha decay to 228Th.
  • Half-life of uranium 232 is only 68.9 years.
  • Uranium 232 very rarely decays by spontaneous fission.
  • Its specific activity is very high ~22 Ci/g and its decay chain produces very penetrating gamma rays.
Uranium 232 decay chain.
Uranium 232 decay chain. This decay chain produces very penetrating gamma rays.
IsotopeSpecific Activity
Uranium 23222 Ci/g
Uranium 2330.0098 Ci/g
Uranium 2340.0063 Ci/g
Uranium 2360.000065 Ci/g
Uranium 2350.0000022 Ci/g
Uranium 2380.00000034 Ci/g

Table of specific activities of isotopes of uranium.

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Uranium 232