Uranium-239
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Uranium-239 is produced by bombarding uranium-238 with slow neutrons. Uranium-239 has a half-life of about 23.45 minutes and decays into neptunium-239 through beta decay. Neptunium-239 has a half-life of about 2.4 days and decays into plutonium-239, following a beta decay.
Uranium-238 | Isotopes of Uranium | Uranium-240 |
Produced from: Protactinium-239 (β-) |
Decay chain | Decays to: Neptunium-239 (β-) |