Input interpretation
Dy-158 (dysprosium-158) | Np-225 (neptunium-225)
Natural abundance
Dy-158 | Np-225 0.1% | 0%
Decay properties
| Dy-158 | Np-225 half-life | (stable) | 2 µs (1.98×10^-6 to ∞ s) mean lifetime | (stable) | 3 µs (2.85×10^-6 to ∞ s) decay constant | 0 per second | 300000 per second specific activity | 0 Bq/g | 9×10^14 TBq/g width | 0 eV | 2×10^-10 eV decay modes | α (alpha emission) | 2β^+ (double beta decay) | α (alpha emission) final decay products | Dy-158 (100%) | Gd-154 (0%) | Gd-158 (0%) | Tl-205 (100%)
Decay modes
Dy-158
decay mode | α (alpha emission) Q-value | 876.2 keV (kiloelectronvolts) daughter nuclide | Gd-154 decay mode | 2β^+ (double beta decay) Q-value | -1.75976 MeV (megaelectronvolts) daughter nuclide | Gd-158
Np-225
decay mode | α (alpha emission) branching ratio | 100% Q-value | 8.7865 MeV (megaelectronvolts) daughter nuclide | Pa-221
Radiation shielding
| Dy-158 lead | 31.7 µm water | 91.3 µm air | 83.1 mm
Decay chain
Dy-158
Decay chain Dy-158
Np-225
Decay chain Np-225
Mass properties
| Dy-158 | Np-225 atomic number (Z) | 66 | 93 mass number (A) | 158 | 225 neutron number | 92 | 132 atomic mass | 157.924409487 u (unified atomic mass units) | 225.033913933 u (unified atomic mass units) mass excess | -70.412109 MeV (megaelectronvolts) | 31.590626 MeV (megaelectronvolts) binding energy per nucleon | 8.19016 MeV (megaelectronvolts) | 7.607544 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| Dy-158 | Np-225 spin parity J^π | 0^+ (atomic boson) | 9/2^- (atomic boson) magnetic moment | 0 μ_N | (unknown)
Quantum properties