Input interpretation
Tm-170 (thulium-170)
Decay properties
half-life | 128.6 days (128.29 to 128.91 days) mean lifetime | 185.5 days (185.08 to 185.98 days) decay constant | 6.238×10^-8 per second specific activity | 221.1 TBq/g (terabecquerels per gram) width | 4.106×10^-23 eV (electronvolts) decay modes | β^- (electron emission) | ϵ (electron capture) final decay products | Yb-170 (100%) | Er-170 (0.131%) | Er-166 (0)
Decay modes
decay mode | β^- (electron emission) branching ratio | 100% Q-value | 0.968344 MeV (megaelectronvolts) daughter nuclide | Yb-170 decay mode | ϵ (electron capture) branching ratio | 0.131% Q-value | 313.99 keV (kiloelectronvolts) daughter nuclide | Er-170
Radiation shielding
lead | 667 µm portland concrete | 2.16 mm water | 4.2 mm air | 3.7 m
Decay chain
Decay chain
Mass properties
atomic number (Z) | 69 mass number (A) | 170 neutron number | 101 atomic mass | 169.935801397 u (unified atomic mass units) mass excess | -59.800614 MeV (megaelectronvolts) binding energy per nucleon | 8.105545 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
spin parity J^π | 1^- (atomic fermion) magnetic moment | 0.2476 μ_N electric quadrupole moment | 0.74 eb (electron barns)
Quantum properties
Excitations
E_level | spin parity J^π | half-life τ_1/2 | width Δ 38.7139 keV (kiloelectronvolts) | 2^- | 1.71×10^-9 seconds | 2.67×10^-7 eV (electronvolts) 114.544 keV (kiloelectronvolts) | 3^- | 6×10^-10 seconds | 7.6×10^-7 eV (electronvolts) 149.718 keV (kiloelectronvolts) | 0^- | (unknown) | (unknown) 183.1897 keV (kiloelectronvolts) | 4^- | (unknown) | (unknown) 183.197 keV (kiloelectronvolts) | 3^+ | 4.12×10^-6 seconds | 1.11×10^-10 eV (electronvolts) 204.4486 keV (kiloelectronvolts) | 2^- | 1×10^-9 seconds | 4.6×10^-7 eV (electronvolts) 219.706 keV (kiloelectronvolts) | 2^- | 2.5×10^-10 seconds | 1.8×10^-6 eV (electronvolts) 237.2396 keV (kiloelectronvolts) | 1^- | (unknown) | (unknown) 247.147 keV (kiloelectronvolts) | 4^+ | (unknown) | (unknown) 270.5466 keV (kiloelectronvolts) | 3^- | (unknown) | (unknown)