Input interpretation
Th-230 (thorium-230)
Decay properties
half-life | 75440 years (0.075122 to 0.075741 Myr) mean lifetime | 0.1088 Myr (megayears) (0.10838 to 0.10927 Myr) decay constant | 2.914×10^-13 per second specific activity | 762.8 MBq/g (megabecquerels per gram) width | 1.918×10^-28 eV (electronvolts) decay modes | α (alpha emission) | ^24Ne (cluster emission) | SF (spontaneous fission) final decay products | Pb-206 (100%) | Tl-205 (1.9×10^-6%) | Pb-208 (2.6×10^-9%)
Decay modes
decay mode | α (alpha emission) branching ratio | 100% Q-value | 4.76996 MeV (megaelectronvolts) daughter nuclide | Ra-226 decay mode | ^24Ne (cluster emission) branching ratio | 5.6×10^-11% daughter nuclide | Hg-206 decay mode | SF (spontaneous fission) branching ratio | 5×10^-11%
Radiation shielding
lead | 14.1 µm water | 35 µm air | 31.9 mm
Decay chain
Decay chain
Mass properties
atomic number (Z) | 90 mass number (A) | 230 neutron number | 140 atomic mass | 230.033133843 u (unified atomic mass units) mass excess | 30.863976 MeV (megaelectronvolts) binding energy per nucleon | 7.63099 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 53.2 keV (kiloelectronvolts) | 2^+ | 3.54×10^-10 seconds | 1.29×10^-6 eV (electronvolts) 174.1 keV (kiloelectronvolts) | 4^+ | 1.66×10^-10 seconds | 2.75×10^-6 eV (electronvolts) 356.6 keV (kiloelectronvolts) | 6^+ | (unknown) | (unknown) 508.16 keV (kiloelectronvolts) | 1^- | (unknown) | (unknown) 571.77 keV (kiloelectronvolts) | 3^- | (unknown) | (unknown) 594.1 keV (kiloelectronvolts) | 8^+ | (unknown) | (unknown) 634.9 keV (kiloelectronvolts) | 0^+ | (unknown) | (unknown) 677.6 keV (kiloelectronvolts) | 2^+ | 6.1×10^-12 seconds | 7.5×10^-5 eV (electronvolts) 686.7 keV (kiloelectronvolts) | 5^- | (unknown) | (unknown) 769.6 keV (kiloelectronvolts) | 4^+ | (unknown) | (unknown)