Input interpretation
Er-170 (erbium-170) | Ac-226 (actinium-226)
Natural abundance
Er-170 | Ac-226 14.91% | 0
Decay properties
| Er-170 | Ac-226 half-life | (stable) | 29.36 h (29.21 to 29.4919 h) mean lifetime | (stable) | 42.36 h (42.197 to 42.5475 h) decay constant | 0 per second | 6.557×10^-6 per second specific activity | 0 Bq/g | 17470 TBq/g width | 0 eV | 4.315×10^-21 eV decay modes | 2β^- (double beta decay) | α (alpha emission) | β^- (electron emission) | ϵ (electron capture) | α (alpha emission) final decay products | Er-170 (100%) | Er-166 (0) | Yb-170 (0) | Pb-206 (100%) | Tl-205 (3×10^-9) | Pb-208 (2.5×10^-10)
Decay modes
Er-170
decay mode | 2β^- (double beta decay) Q-value | 654.35 keV (kiloelectronvolts) daughter nuclide | Yb-170 decay mode | α (alpha emission) Q-value | 50.6 keV (kiloelectronvolts) daughter nuclide | Dy-166
Ac-226
decay mode | β^- (electron emission) branching ratio | 83% Q-value | 1.11315 MeV (megaelectronvolts) daughter nuclide | Th-226 decay mode | ϵ (electron capture) branching ratio | 17% Q-value | 641.11 keV (kiloelectronvolts) daughter nuclide | Ra-226 decay mode | α (alpha emission) branching ratio | 6×10^-5 Q-value | 5.536 MeV (megaelectronvolts) daughter nuclide | Fr-222
Radiation shielding
Radiation shielding
Decay chain
Er-170
Decay chain Er-170
Ac-226
Decay chain Ac-226
Mass properties
| Er-170 | Ac-226 atomic number (Z) | 68 | 89 mass number (A) | 170 | 226 neutron number | 102 | 137 atomic mass | 169.935464312 u (unified atomic mass units) | 226.026098089 u (unified atomic mass units) mass excess | -60.114606 MeV (megaelectronvolts) | 24.310214 MeV (megaelectronvolts) binding energy per nucleon | 8.111994 MeV (megaelectronvolts) | 7.655658 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| Er-170 | Ac-226 spin parity J^π | 0^+ (atomic boson) | 1^- (atomic fermion) magnetic moment | 0 μ_N | (unknown)
Quantum properties