Input interpretation
Am-239 No-252 | decay modes
Results
Am-239 | ϵ (electron capture) | α (alpha emission) No-252 | α (alpha emission) | SF (spontaneous fission) | β^+ (positron emission)
Decay properties
| Am-239 | No-252 half-life | 11.9 h (11.796 to 12.004 h) | 2.44 s (2.2 to 2.483 s) mean lifetime | 17.2 h (17.018 to 17.318 h) | 3.52 s (3.46 to 3.58 s) decay constant | 1.62×10^-5 per second | 0.284 per second specific activity | 40800 TBq/g | 6.79×10^8 TBq/g width | 1.06×10^-20 eV | 1.87×10^-16 eV decay modes | ϵ (electron capture) | α (alpha emission) | α (alpha emission) | SF (spontaneous fission) | β^+ (positron emission) final decay products | Pb-207 (100%) | Tl-205 (9×10^-8%) | Pb-206 (8×10^-10%) | Pb-208 (1×10^-12%) | Pb-208 (70%) | Pb-206 (3×10^-9%) | Hg-204 (3×10^-12%) | Pb-204 (0%) | Hg-200 (0%)
Decay modes
Am-239
decay mode | ϵ (electron capture) branching ratio | 100% Q-value | 802.11 keV (kiloelectronvolts) daughter nuclide | Pu-239 decay mode | α (alpha emission) branching ratio | 0.01% Q-value | 5.9224 MeV (megaelectronvolts) daughter nuclide | Np-235
No-252
decay mode | α (alpha emission) branching ratio | 67% Q-value | 8.54977 MeV (megaelectronvolts) daughter nuclide | Fm-248 decay mode | SF (spontaneous fission) branching ratio | 32.2% decay mode | β^+ (positron emission) Q-value | 1.229 MeV (megaelectronvolts) daughter nuclide | Md-252