Input interpretation
Th-230 (thorium-230) | Rf-256 (rutherfordium-256)
Decay properties
| Th-230 | Rf-256 half-life | 75440 yr (0.075122 to 0.075741 Myr) | 6.45 ms (6.301 to 6.599 ms) mean lifetime | 0.1088 Myr (0.10838 to 0.10927 Myr) | 9.31 ms (9.097 to 9.514 ms) decay constant | 2.914×10^-13 per second | 107 per second specific activity | 762.8 MBq/g | 2.53×10^11 TBq/g width | 1.918×10^-28 eV | 7.07×10^-14 eV decay modes | α (alpha emission) | ^24Ne (cluster emission) | SF (spontaneous fission) | SF (spontaneous fission) | α (alpha emission) final decay products | Pb-206 (100%) | Tl-205 (1.9×10^-6%) | Pb-208 (2.6×10^-9%) | Pb-208 (0.2%) | Pb-206 (9×10^-12%) | Hg-204 (1×10^-14%) | Pb-204 (0%) | Hg-200 (0%)
Decay modes
Th-230
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%
Rf-256
decay mode | SF (spontaneous fission) branching ratio | 99.68% decay mode | α (alpha emission) branching ratio | 0.32% Q-value | 8.9297 MeV (megaelectronvolts) daughter nuclide | No-252
Radiation shielding
| Th-230 lead | 14.1 µm water | 35 µm air | 31.9 mm
Decay chain
Th-230
Decay chain Th-230
Rf-256
Decay chain Rf-256
Mass properties
| Th-230 | Rf-256 atomic number (Z) | 90 | 104 mass number (A) | 230 | 256 neutron number | 140 | 152 atomic mass | 230.033133843 u (unified atomic mass units) | 256.101166194 u (unified atomic mass units) mass excess | 30.863976 MeV (megaelectronvolts) | 94.235704 MeV (megaelectronvolts) binding energy per nucleon | 7.63099 MeV (megaelectronvolts) | 7.385381 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| Th-230 | Rf-256 spin parity J^π | 0^+ (atomic boson) | 0^+ (atomic boson) magnetic moment | 0 μ_N | 0 μ_N
Quantum properties