Input interpretation
beta plus delayed proton alpha emission
Members
Ar-31
Decay properties
half-life | 14.4 ms (milliseconds) (13.78 to 17 ms) mean lifetime | 20.8 ms (milliseconds) (19.88 to 21.67 ms) decay constant | 48.1 per second specific activity | 9.34×10^11 TBq/g (terabecquerels per gram) width | 3.17×10^-14 eV (electronvolts) decay modes | β^+p (positron + delayed proton) | β^+ (positron emission) | β^+2p (positron + delayed 2 protons) | β^+3p (positron + delayed 3 protons) | β^+pα (positron + delayed proton, α) | β^+α (positron + delayed α) final decay products | Si-30 (63%) | P-31 (28%) | Si-29 (7.2%) | Si-28 (1.4%) | Mg-26 (0.38%) | Al-27 (0.03%)
Decay modes
decay mode | β^+p (positron + delayed proton) branching ratio | 63% daughter nuclide | S-30 decay mode | β^+ (positron emission) branching ratio | 28% Q-value | 17.338 MeV (megaelectronvolts) daughter nuclide | Cl-31 decay mode | β^+2p (positron + delayed 2 protons) branching ratio | 7.2% daughter nuclide | P-29 decay mode | β^+3p (positron + delayed 3 protons) branching ratio | 1.4% daughter nuclide | Si-28 decay mode | β^+pα (positron + delayed proton, α) branching ratio | 0.38% daughter nuclide | Si-26 decay mode | β^+α (positron + delayed α) branching ratio | 0.03% daughter nuclide | P-27
Decay chain
Decay chain
Mass properties
atomic number (Z) | 18 mass number (A) | 31 neutron number | 13 atomic mass | 31.012123 u (unified atomic mass units) mass excess | 11.293 MeV (megaelectronvolts) binding energy per nucleon | 7.253 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
spin parity J^π | 5/2^+ (atomic fermion)
Quantum properties