Input interpretation
Am-241 (americium-241) | Er-164 (erbium-164)
Natural abundance
Am-241 | Er-164 0% | 1.601%
Decay properties
| Am-241 | Er-164 half-life | 432.5 yr (431.73 to 433.25 yr) | (stable) mean lifetime | 624 yr (622.87 to 625 yr) | (stable) decay constant | 5.081×10^-11 per second | 0 per second specific activity | 126.9 GBq/g | 0 Bq/g width | 3.345×10^-26 eV | 0 eV decay modes | α (alpha emission) | SF (spontaneous fission) | ^34Si (cluster emission) | α (alpha emission) | 2β^+ (double beta decay) 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
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
Mass properties
| Am-241 | Er-164 atomic number (Z) | 95 | 68 mass number (A) | 241 | 164 neutron number | 146 | 96 atomic mass | 241.056829144 u (unified atomic mass units) | 163.929200229 u (unified atomic mass units) mass excess | 52.936008 MeV (megaelectronvolts) | -65.949562 MeV (megaelectronvolts) binding energy per nucleon | 7.543272 MeV (megaelectronvolts) | 8.149061 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| Am-241 | Er-164 spin parity J^π | 5/2^- (atomic boson) | 0^+ (atomic boson) magnetic moment | 1.61 μ_N | 0 μ_N electric quadrupole moment | 4.2 eb (electron barns) | (unknown)
Quantum properties