Input interpretation
Pm-144 (promethium-144) | W-176 (tungsten-176)
Decay properties
| Pm-144 | W-176 half-life | 363 days (348.6 to 377.5 days) | 150 min (130 to 170 min) mean lifetime | 523 days (502.9 to 544.4 days) | 220 min (206 to 226 min) decay constant | 2.21×10^-8 per second | 7.7×10^-5 per second specific activity | 92.6 TBq/g | 260000 TBq/g width | 1.45×10^-23 eV | 5.1×10^-20 eV decay modes | ϵ (electron capture) | e^+ (positron emission) | ϵ (electron capture) final decay products | Ce-140 (100%) | Hf-176 (100%)
Decay modes
Pm-144
decay mode | ϵ (electron capture) branching ratio | 100% Q-value | 2.33206 MeV (megaelectronvolts) daughter nuclide | Nd-144 decay mode | e^+ (positron emission) branching ratio | 8×10^-7 daughter nuclide | Nd-144
W-176
decay mode | ϵ (electron capture) branching ratio | 100% Q-value | 723.8 keV (kiloelectronvolts) daughter nuclide | Ta-176
Radiation shielding
Radiation shielding
Decay chain
Pm-144
Decay chain Pm-144
W-176
Decay chain W-176
Mass properties
| Pm-144 | W-176 atomic number (Z) | 61 | 74 mass number (A) | 144 | 176 neutron number | 83 | 102 atomic mass | 143.912590843 u (unified atomic mass units) | 175.945634 u (unified atomic mass units) mass excess | -81.421106 MeV (megaelectronvolts) | -50.641603 MeV (megaelectronvolts) binding energy per nucleon | 8.305331 MeV (megaelectronvolts) | 8.030112 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| Pm-144 | W-176 spin parity J^π | 5^- (atomic fermion) | 0^+ (atomic boson) magnetic moment | 1.69 μ_N | 0 μ_N
Quantum properties