Input interpretation
Ac-208 (actinium-208) | Te-107 (tellurium-107)
Decay properties
| Ac-208 | Te-107 half-life | 95 ms (70 to 130 ms) | 3.1 ms (2.96 to 3.24 ms) mean lifetime | 140 ms (90 to 190 ms) | 4.5 ms (4.28 to 4.67 ms) decay constant | 7.3 per second | 220 per second specific activity | 2.1×10^10 TBq/g | 1.3×10^12 TBq/g width | 3.3×10^-15 eV | 1.5×10^-13 eV decay modes | α (alpha emission) | β^+ (positron emission) | α (alpha emission) | β^+ (positron emission) final decay products | Hg-196 (60%) | Hg-200 (40%) | Pb-204 (5×10^-4) | Pt-192 (6×10^-6) | Pb-208 (4×10^-10) | Os-188 (3×10^-13) | Os-184 (7×10^-20) | Hf-176 (0) | Hf-180 (0) | Pt-196 (0) | W-180 (0) | W-184 (0) | Rh-103 (70%) | Ag-107 (30%) | Pd-102 (0) | Ru-102 (0)
Decay modes
Ac-208
decay mode | α (alpha emission) branching ratio | 99% Q-value | 7.7268 MeV (megaelectronvolts) daughter nuclide | Fr-204 decay mode | β^+ (positron emission) branching ratio | 1% Q-value | 8.0241 MeV (megaelectronvolts) daughter nuclide | Ra-208
Te-107
decay mode | α (alpha emission) branching ratio | 70% Q-value | 4.00827 MeV (megaelectronvolts) daughter nuclide | Sn-103 decay mode | β^+ (positron emission) branching ratio | 30% Q-value | 9.091 MeV (megaelectronvolts) daughter nuclide | Sb-107
Radiation shielding
Radiation shielding
Decay chain
Ac-208
Decay chain Ac-208
Te-107
Decay chain Te-107
Mass properties
| Ac-208 | Te-107 atomic number (Z) | 89 | 52 mass number (A) | 208 | 107 neutron number | 119 | 55 atomic mass | 208.011551551 u (unified atomic mass units) | 106.935006 u (unified atomic mass units) mass excess | 10.760201 MeV (megaelectronvolts) | -60.541 MeV (megaelectronvolts) binding energy per nucleon | 7.684831 MeV (megaelectronvolts) | 8.257 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| Ac-208 | Te-107 spin parity J^π | 3^+ (atomic fermion) | 5/2^+ (atomic fermion)
Quantum properties