Input interpretation
N-18 (nitrogen-18)
Decay properties
half-life | 624 ms (milliseconds) (605 to 643 ms) mean lifetime | 900 ms (milliseconds) (870 to 930 ms) decay constant | 1.11 per second specific activity | 3.71×10^10 TBq/g (terabecquerels per gram) width | 5.07×10^-16 eV (electronvolts) decay modes | β^- (electron emission) | β^-α (electron + delayed α) | β^-n (electron + delayed neutron) final decay products | O-18 (77%) | N-14 (12.2%) | O-17 (10.9%)
Decay modes
decay mode | β^- (electron emission) branching ratio | 77% Q-value | 13.896 MeV (megaelectronvolts) daughter nuclide | O-18 decay mode | β^-α (electron + delayed α) branching ratio | 12.2% Q-value | 7.6697 MeV (megaelectronvolts) daughter nuclide | C-14 decay mode | β^-n (electron + delayed neutron) branching ratio | 10.9% Q-value | 5.852 MeV (megaelectronvolts) daughter nuclide | O-17
Decay chain
Decay chain
Mass properties
atomic number (Z) | 7 mass number (A) | 18 neutron number | 11 atomic mass | 18.014078959 u (unified atomic mass units) mass excess | 13.114466 MeV (megaelectronvolts) binding energy per nucleon | 7.03849 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
spin parity J^π | 1^- (atomic fermion)
Quantum properties
Excitations
E_level | spin parity J^π | half-life τ_1/2 | width Δ 114.9 keV (kiloelectronvolts) | 2^- | (unknown) | (unknown) 587.56 keV (kiloelectronvolts) | 2^- | (unknown) | (unknown) 747 keV (kiloelectronvolts) | 3^- | (unknown) | (unknown) 1734.85 keV (kiloelectronvolts) | 2^+ | (unknown) | (unknown) 2210 keV (kiloelectronvolts) | (unknown) | (unknown) | (unknown) 2420 keV (kiloelectronvolts) | (unknown) | (unknown) | (unknown) 2614.45 keV (kiloelectronvolts) | 1^+ | (unknown) | (unknown)