Input interpretation
Am-241 (americium-241) | Er-164 (erbium-164) | Sg-272 (seaborgium-272)
Natural abundance
Am-241 | Er-164 | Sg-272 0% | 1.601% | 0%
Decay properties
| Am-241 | Er-164 | Sg-272 half-life | 432.5 yr (431.73 to 433.25 yr) | (stable) | 67 min mean lifetime | 624 yr (622.87 to 625 yr) | (stable) | 83 min decay constant | 5.081×10^-11 per second | 0 per second | 2×10^-4 per second specific activity | 126.9 GBq/g | 0 Bq/g | 440000 TBq/g width | 3.345×10^-26 eV | 0 eV | 1×10^-19 eV decay modes | α (alpha emission) | SF (spontaneous fission) | ^34Si (cluster emission) | α (alpha emission) | 2β^+ (double beta decay) | α (alpha emission) | SF (spontaneous fission) final decay products | Tl-205 (100%) | Pb-207 (7×10^-10%) | Er-164 (100%) | Dy-160 (0%) | Dy-164 (0%) |
Decay modes
Am-241
decay mode | α (alpha emission) branching ratio | 100% Q-value | 5.63782 MeV (megaelectronvolts) daughter nuclide | Np-237 decay mode | SF (spontaneous fission) branching ratio | 4.3×10^-10% decay mode | ^34Si (cluster emission) branching ratio | 7.4×10^-14% daughter nuclide | Tl-207
Er-164
decay mode | α (alpha emission) Q-value | 1.30359 MeV (megaelectronvolts) daughter nuclide | Dy-160 decay mode | 2β^+ (double beta decay) Q-value | -2.02067 MeV (megaelectronvolts) daughter nuclide | Dy-164
Sg-272
decay mode | α (alpha emission) Q-value | 8.3 MeV (megaelectronvolts) daughter nuclide | Rf-268 decay mode | SF (spontaneous fission)
Radiation shielding
| Am-241 lead | 17.5 µm water | 45.1 µm air | 41.1 mm
Decay chain
Am-241
Decay chain Am-241
Er-164
Decay chain Er-164
Sg-272
Decay chain Sg-272
Mass properties
| atomic number (Z) | mass number (A) | neutron number Am-241 | 95 | 241 | 146 Er-164 | 68 | 164 | 96 Sg-272 | 106 | 272 | 166 | atomic mass | mass excess | binding energy per nucleon Am-241 | 241.056829144 u (unified atomic mass units) | 52.936008 MeV (megaelectronvolts) | 7.543272 MeV (megaelectronvolts) Er-164 | 163.929200229 u (unified atomic mass units) | -65.949562 MeV (megaelectronvolts) | 8.149061 MeV (megaelectronvolts) Sg-272 | 272.135158 u (unified atomic mass units) | 125.898 MeV (megaelectronvolts) | 7.304 MeV (megaelectronvolts)
Mass properties