Input interpretation
U-236 (uranium-236)
Decay properties
half-life | 23.42 Myr (megayears) (-280 to 310 Myr) mean lifetime | 33.79 Myr (megayears) (-500 to 600 Myr) decay constant | 9.385×10^-16 per second specific activity | 2.394 MBq/g (megabecquerels per gram) width | 4.281×10^-31 eV (electronvolts) decay modes | α (alpha emission) | SF (spontaneous fission) final decay products | Pb-208 (100%) | Pb-206 (4×10^-11) | Pb-204 (0) | Hg-200 (0) | Hg-204 (0)
Decay modes
decay mode | α (alpha emission) branching ratio | 100% Q-value | 4.5731 MeV (megaelectronvolts) daughter nuclide | Th-232 decay mode | SF (spontaneous fission) branching ratio | 9.6×10^-10
Radiation shielding
lead | 13.4 µm water | 32.9 µm air | 30 mm
Decay chain
Decay chain
Mass properties
atomic number (Z) | 92 mass number (A) | 236 neutron number | 144 atomic mass | 236.045568006 u (unified atomic mass units) mass excess | 42.446325 MeV (megaelectronvolts) binding energy per nucleon | 7.586477 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
spin parity J^π | 0^+ (atomic boson) magnetic moment | 0 μ_N
Quantum properties
Excitations
E_level | spin parity J^π | half-life τ_1/2 | width Δ 45.244 keV (kiloelectronvolts) | 2^+ | 2.34×10^-10 seconds | 1.95×10^-6 eV (electronvolts) 149.477 keV (kiloelectronvolts) | 4^+ | 1.24×10^-10 seconds | 3.68×10^-6 eV (electronvolts) 309.785 keV (kiloelectronvolts) | 6^+ | 5.8×10^-11 seconds | 7.9×10^-6 eV (electronvolts) 522.25 keV (kiloelectronvolts) | 8^+ | 2.4×10^-11 seconds | 1.9×10^-5 eV (electronvolts) 687.59 keV (kiloelectronvolts) | 1^- | 3.78×10^-9 seconds | 1.21×10^-7 eV (electronvolts) 744.18 keV (kiloelectronvolts) | 3^- | (unknown) | (unknown) 782.3 keV (kiloelectronvolts) | 10^+ | 1.16×10^-11 seconds | 3.93×10^-5 eV (electronvolts) 848.1 keV (kiloelectronvolts) | 5^- | (unknown) | (unknown) 919.14 keV (kiloelectronvolts) | 0^+ | (unknown) | (unknown) 957.9 keV (kiloelectronvolts) | 2^+ | (unknown) | (unknown)