Input interpretation
N-18 (nitrogen-18) | Ta-190 (tantalum-190)
Decay properties
| N-18 | Ta-190 half-life | 624 ms (605 to 643 ms) | 300 ms mean lifetime | 900 ms (870 to 930 ms) | 433 ms decay constant | 1.11 per second | 2.31 per second specific activity | 3.71×10^10 TBq/g | 7.32×10^9 TBq/g width | 5.07×10^-16 eV | 1.52×10^-15 eV decay modes | β^- (electron emission) | β^-α (electron + delayed α) | β^-n (electron + delayed neutron) | β^- (electron emission) final decay products | O-18 (77%) | N-14 (12.2%) | O-17 (10.9%) | Os-190 (0%)
Decay modes
N-18
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
Ta-190
decay mode | β^- (electron emission) Q-value | 5.634 MeV (megaelectronvolts) daughter nuclide | W-190
Radiation shielding
Radiation shielding
Decay chain
N-18
Decay chain N-18
Ta-190
Decay chain Ta-190
Mass properties
| N-18 | Ta-190 atomic number (Z) | 7 | 73 mass number (A) | 18 | 190 neutron number | 11 | 117 atomic mass | 18.014078959 u (unified atomic mass units) | 189.96923 u (unified atomic mass units) mass excess | 13.114466 MeV (megaelectronvolts) | -28.662 MeV (megaelectronvolts) binding energy per nucleon | 7.03849 MeV (megaelectronvolts) | 7.922 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| N-18 spin parity J^π | 1^- (atomic fermion)
Quantum properties