Input interpretation
At-219 | daughter nuclides
Result
Bi-215 | Rn-219
Decay properties
| Bi-215 | Rn-219 half-life | 7.67 min (7.32 to 7.89 min) | 3.96 s (3.947 to 3.973 s) mean lifetime | 11 min (10.6 to 11.4 min) | 5.71 s (5.694 to 5.732 s) decay constant | 0.00152 per second | 0.175 per second specific activity | 4.24×10^6 TBq/g | 4.82×10^8 TBq/g width | 1×10^-18 eV | 1.15×10^-16 eV decay modes | β^- (electron emission) | α (alpha emission) final decay products | Pb-207 (100%) | Pb-207 (100%)
Decay modes
decay mode | α (alpha emission) branching ratio | 97% Q-value | 6.3236 MeV (megaelectronvolts) daughter nuclide | Bi-215 decay mode | β^- (electron emission) branching ratio | 3% Q-value | 1.5663 MeV (megaelectronvolts) daughter nuclide | Rn-219
Bi-215
decay mode | β^- (electron emission) branching ratio | 100% Q-value | 2.1888 MeV (megaelectronvolts) daughter nuclide | Po-215
Rn-219
decay mode | α (alpha emission) branching ratio | 100% Q-value | 6.94612 MeV (megaelectronvolts) daughter nuclide | Po-215
Radiation shielding
| Bi-215 | Rn-219 lead | 1.57 mm | 23 µm portland concrete | 5.5 mm | water | 10.8 mm | 62.5 µm air | 9.37 m | 56.9 mm
Decay chain
Bi-215
Decay chain Bi-215
Rn-219
Decay chain Rn-219
Mass properties
| Bi-215 | Rn-219 atomic number (Z) | 83 | 86 mass number (A) | 215 | 219 neutron number | 132 | 133 atomic mass | 215.001769776 u (unified atomic mass units) | 219.009480204 u (unified atomic mass units) mass excess | 1.648537 MeV (megaelectronvolts) | 8.830754 MeV (megaelectronvolts) binding energy per nucleon | 7.761627 MeV (megaelectronvolts) | 7.723771 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| Bi-215 | Rn-219 spin parity J^π | 9/2^- (atomic boson) | 5/2^+ (atomic fermion) magnetic moment | (unknown) | -0.442 μ_N electric quadrupole moment | (unknown) | 1.15 eb (electron barns)
Quantum properties