Input interpretation
Zr-89 (zirconium-89)
Decay properties
half-life | 78.42 hours (78.2878 to 78.5316 h) mean lifetime | 113.1 hours (112.9 to 113.301 h) decay constant | 2.456×10^-6 per second specific activity | 16630 TBq/g (terabecquerels per gram) width | 1.616×10^-21 eV (electronvolts) decay modes | β^+ (positron emission) final decay products | Y-89 (100%)
Decay mode
decay mode | β^+ (positron emission) Q-value | 1.81066 MeV (megaelectronvolts) daughter nuclide | Y-89
Decay chain
Decay chain
Mass properties
atomic number (Z) | 40 mass number (A) | 89 neutron number | 49 atomic mass | 88.9088895 u (unified atomic mass units) mass excess | -84.868884 MeV (megaelectronvolts) binding energy per nucleon | 8.673284 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
spin parity J^π | 9/2^+ (atomic fermion)
Quantum properties
Excitations
E_level | spin parity J^π | half-life τ_1/2 | width Δ 587.82 keV (kiloelectronvolts) | 1/2^- | 249.7 seconds | 1.827×10^-18 eV (electronvolts) 1094.9 keV (kiloelectronvolts) | 3/2^- | 5×10^-14 seconds | 0.009 eV (electronvolts) 1451.3 keV (kiloelectronvolts) | 5/2^- | 3.5×10^-12 seconds | 1.3×10^-4 eV (electronvolts) 1511.8 keV (kiloelectronvolts) | 9/2^+ | 5.3×10^-13 seconds | 8.6×10^-4 eV (electronvolts) 1627.29 keV (kiloelectronvolts) | 5/2^+ | 3.5×10^-13 seconds | 0.0013 eV (electronvolts) 1742.6 keV (kiloelectronvolts) | 1/2^- | 4.3×10^-13 seconds | 0.0011 eV (electronvolts) 1833.7 keV (kiloelectronvolts) | 5/2^+ | 4.6×10^-13 seconds | 9.9×10^-4 eV (electronvolts) 1864.6 keV (kiloelectronvolts) | 3/2^- | 1.7×10^-13 seconds | 0.0027 eV (electronvolts) 1943.72 keV (kiloelectronvolts) | 13/2^+ | 7.4×10^-13 seconds | 6.2×10^-4 eV (electronvolts) 2086 keV (kiloelectronvolts) | 5/2^+ | 2×10^-12 seconds | 2×10^-4 eV (electronvolts)
Medical applications
cancer of the lymphoid and histiocytic tissue | skin cancer of the scalp and neck | brain cancer | lymphosarcoma, reticulosarcoma, and other malignant tumors of lymphatic tissue | cancer of the connective and soft tissue of the head, face, and neck | cancer arising from the head, face, and neck area | secondary cancer of the lymph nodes of the head, face, and neck