Input interpretation
Dy-148 | daughter nuclides
Result
Tb-148
Decay properties
half-life | 60 minutes (58.77 to 61.23 min) mean lifetime | 87 minutes (84.77 to 93 min) decay constant | 1.9×10^-4 per second specific activity | 780000 TBq/g (terabecquerels per gram) width | 1.3×10^-19 eV (electronvolts) decay modes | β^+ (positron emission) final decay products | Sm-144 (100%) | Ce-140 (0%)
Decay mode
decay mode | β^+ (positron emission) Q-value | 1.65876 MeV (megaelectronvolts) daughter nuclide | Tb-148
decay mode | β^+ (positron emission) Q-value | 4.7132 MeV (megaelectronvolts) daughter nuclide | Gd-148
Decay chain
Decay chain
Mass properties
atomic number (Z) | 65 mass number (A) | 148 neutron number | 83 atomic mass | 147.924271701 u (unified atomic mass units) mass excess | -70.540457 MeV (megaelectronvolts) binding energy per nucleon | 8.204344 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
spin parity J^π | 2^- (atomic fermion)
Quantum properties
Excitations
E_level | spin parity J^π | half-life τ_1/2 | width Δ 90.1 keV (kiloelectronvolts) | 9^+ | 132 seconds | 3.46×10^-18 eV (electronvolts) 109.6 keV (kiloelectronvolts) | 4^- | 8×10^-8 seconds | 5.7×10^-9 eV (electronvolts) 178.4 keV (kiloelectronvolts) | 2^+ | 7×10^-9 seconds | 6.5×10^-8 eV (electronvolts) 195.4 keV (kiloelectronvolts) | 3^- | (unknown) | (unknown) 280.9 keV (kiloelectronvolts) | 3^+ | (unknown) | (unknown) 327.9 keV (kiloelectronvolts) | 7^+ | 4.5×10^-9 seconds | 1×10^-7 eV (electronvolts) 345 keV (kiloelectronvolts) | 5^- | (unknown) | (unknown) 351.3 keV (kiloelectronvolts) | 5^+ | (unknown) | (unknown) 375.3 keV (kiloelectronvolts) | 4^+ | (unknown) | (unknown) 406 keV (kiloelectronvolts) | 8^+ | 7×10^-10 seconds | 7×10^-7 eV (electronvolts)