Input interpretation
Ir-190 (iridium-190)
Decay properties
half-life | 11.78 days (11.678 to 11.881 days) mean lifetime | 16.99 days (16.85 to 17.141 days) decay constant | 6.812×10^-7 per second specific activity | 2160 TBq/g (terabecquerels per gram) width | 4.483×10^-22 eV (electronvolts) decay modes | β^+ (positron emission) | e^+ (positron emission) final decay products | Os-190 (100%)
Decay modes
decay mode | β^+ (positron emission) branching ratio | 100% Q-value | 932.93 keV (kiloelectronvolts) daughter nuclide | Os-190 decay mode | e^+ (positron emission) branching ratio | 2×10^-5 daughter nuclide | Os-190
Decay chain
Decay chain
Mass properties
atomic number (Z) | 77 mass number (A) | 190 neutron number | 113 atomic mass | 189.960545968 u (unified atomic mass units) mass excess | -36.751194 MeV (megaelectronvolts) binding energy per nucleon | 7.947688 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
spin parity J^π | 4^- (atomic fermion) magnetic moment | 0.04 μ_N electric quadrupole moment | 2.85 eb (electron barns)
Quantum properties
Excitations
E_level | spin parity J^π | half-life τ_1/2 | width Δ 22.46 keV (kiloelectronvolts) | 6^- | (unknown) | (unknown) 26.1 keV (kiloelectronvolts) | 1^- | 4032 seconds | 1.132×10^-19 eV (electronvolts) 36.154 keV (kiloelectronvolts) | 4^+ | 2×10^-6 seconds | 2×10^-10 eV (electronvolts) 38.1 keV (kiloelectronvolts) | 3^- | (unknown) | (unknown) 82.594 keV (kiloelectronvolts) | 3^- | 6×10^-9 seconds | 8×10^-8 eV (electronvolts) 83.3 keV (kiloelectronvolts) | 2^- | (unknown) | (unknown) 138.116 keV (kiloelectronvolts) | 5^- | (unknown) | (unknown) 144.1 keV (kiloelectronvolts) | 1^- | (unknown) | (unknown) 168.38 keV (kiloelectronvolts) | 4^- | (unknown) | (unknown) 170.53 keV (kiloelectronvolts) | 5^+ | (unknown) | (unknown)