Input interpretation
Al-22 (aluminum-22)
Decay properties
half-life | 59 ms (milliseconds) (55.4 to 63 ms) mean lifetime | 85 ms (milliseconds) (80 to 90.2 ms) decay constant | 12 per second specific activity | 3.2×10^11 TBq/g (terabecquerels per gram) width | 7.7×10^-15 eV (electronvolts) decay modes | β^+ (positron emission) | β^+p (positron + delayed proton) | β^+2p (positron + delayed 2 protons) | β^+α (positron + delayed α) final decay products | Ne-22 (55%) | Ne-21 (44%) | Ne-20 (0.9%) | O-18 (0.31%)
Decay modes
decay mode | β^+ (positron emission) branching ratio | 55% Q-value | 17.5578 MeV (megaelectronvolts) daughter nuclide | Mg-22 decay mode | β^+p (positron + delayed proton) branching ratio | 44% daughter nuclide | Na-21 decay mode | β^+2p (positron + delayed 2 protons) branching ratio | 0.9% daughter nuclide | Ne-20 decay mode | β^+α (positron + delayed α) branching ratio | 0.31% daughter nuclide | Ne-18
Decay chain
Decay chain
Mass properties
atomic number (Z) | 13 mass number (A) | 22 neutron number | 9 atomic mass | 22.01952 u (unified atomic mass units) mass excess | 18.183 MeV (megaelectronvolts) binding energy per nucleon | 6.783 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
spin parity J^π | 3^+ (atomic fermion)
Quantum properties
Excitations
E_level | spin parity J^π | half-life τ_1/2 | width Δ 1850 keV (kiloelectronvolts) | 1^+ | (unknown) | (unknown) 2210 keV (kiloelectronvolts) | 1^+ | (unknown) | (unknown)