Input interpretation
Nb-81 (niobium-81) | Cs-132 (cesium-132)
Decay properties
| Nb-81 | Cs-132 half-life | 800 ms | 6.479 days (6.47179 to 6.492 days) mean lifetime | 1.2 s | 9.347 days (9.331 to 9.363 days) decay constant | 0.87 per second | 1.238×10^-6 per second specific activity | 6.4×10^9 TBq/g | 5653 TBq/g width | 4×10^-16 eV | 8.15×10^-22 eV decay modes | p (proton emission) | β^+ (positron emission) | β^+p (positron + delayed proton) | β^+ (positron emission) | β^- (electron emission) final decay products | Br-79 (0%) | Br-81 (0%) | Kr-80 (0%) | Xe-132 (98.13%) | Ba-132 (1.87%)
Decay modes
Nb-81
decay mode | p (proton emission) Q-value | 750 keV (kiloelectronvolts) daughter nuclide | Zr-80 decay mode | β^+ (positron emission) Q-value | 9.99 MeV (megaelectronvolts) daughter nuclide | Zr-81 decay mode | β^+p (positron + delayed proton) daughter nuclide | Y-80
Cs-132
decay mode | β^+ (positron emission) branching ratio | 98.13% Q-value | 1.10235 MeV (megaelectronvolts) daughter nuclide | Xe-132 decay mode | β^- (electron emission) branching ratio | 1.87% Q-value | 1.27892 MeV (megaelectronvolts) daughter nuclide | Ba-132
Radiation shielding
Radiation shielding
Decay chain
Nb-81
Decay chain Nb-81
Cs-132
Decay chain Cs-132
Mass properties
| Nb-81 | Cs-132 atomic number (Z) | 41 | 55 mass number (A) | 81 | 132 neutron number | 40 | 77 atomic mass | 80.94903 u (unified atomic mass units) | 131.90643426 u (unified atomic mass units) mass excess | -47.478 MeV (megaelectronvolts) | -87.155926 MeV (megaelectronvolts) binding energy per nucleon | 8.261 MeV (megaelectronvolts) | 8.405612 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| Nb-81 | Cs-132 spin parity J^π | 3/2^- (atomic boson) | 2^+ (atomic fermion) magnetic moment | (unknown) | 2.222 μ_N electric quadrupole moment | (unknown) | 0.508 eb (electron barns)
Quantum properties