Input interpretation
Gd-161 (gadolinium-161) | Ar-47 (argon-47)
Decay properties
| Gd-161 | Ar-47 half-life | 220 s (211 to 229 s) | 1.23 s (1.2 to 1.3 s) mean lifetime | 5.28 min (5 to 5.5 min) | 1.77 s (1.7 to 1.9 s) decay constant | 0.00316 per second | 0.564 per second specific activity | 1.18×10^7 TBq/g | 7.22×10^9 TBq/g width | 1.44×10^-18 eV | 2.57×10^-16 eV decay modes | β^- (electron emission) | β^- (electron emission) | β^-n (electron + delayed neutron) final decay products | Dy-161 (100%) | Ti-47 (100%) | Ca-46 (1%) | Ti-46 (0)
Decay modes
Gd-161
decay mode | β^- (electron emission) branching ratio | 100% Q-value | 1.95548 MeV (megaelectronvolts) daughter nuclide | Tb-161
Ar-47
decay mode | β^- (electron emission) branching ratio | 99% Q-value | 9.788 MeV (megaelectronvolts) daughter nuclide | K-47 decay mode | β^-n (electron + delayed neutron) branching ratio | 1% Q-value | 1.439 MeV (megaelectronvolts) daughter nuclide | K-46
Radiation shielding
| Gd-161 lead | 1.41 mm portland concrete | 4.87 mm water | 9.54 mm air | 8.3 m
Decay chain
Gd-161
Decay chain Gd-161
Ar-47
Decay chain Ar-47
Mass properties
| Gd-161 | Ar-47 atomic number (Z) | 64 | 18 mass number (A) | 161 | 47 neutron number | 97 | 29 atomic mass | 160.929669211 u (unified atomic mass units) | 46.972186792 u (unified atomic mass units) mass excess | -65.512709 MeV (megaelectronvolts) | -25.907836 MeV (megaelectronvolts) binding energy per nucleon | 8.167233 MeV (megaelectronvolts) | 8.322926 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| Gd-161 | Ar-47 spin parity J^π | 5/2^- (atomic fermion) | 3/2^- (atomic fermion)
Quantum properties