Input interpretation
Al-31 (aluminum-31)
Decay properties
half-life | 644 ms (milliseconds) (618 to 670.1 ms) mean lifetime | 929 ms (milliseconds) (0.8923 to 0.9659 s) decay constant | 1.08 per second specific activity | 2.09×10^10 TBq/g (terabecquerels per gram) width | 7.08×10^-16 eV (electronvolts) decay modes | β^- (electron emission) | β^-n (electron + delayed neutron) final decay products | P-31 (100%) | Si-30 (1.6%)
Decay modes
decay mode | β^- (electron emission) branching ratio | 98% Q-value | 7.9954 MeV (megaelectronvolts) daughter nuclide | Si-31 decay mode | β^-n (electron + delayed neutron) branching ratio | 1.6% Q-value | 1.408 MeV (megaelectronvolts) daughter nuclide | Si-30
Decay chain
Decay chain
Mass properties
atomic number (Z) | 13 mass number (A) | 31 neutron number | 18 atomic mass | 30.983946619 u (unified atomic mass units) mass excess | -14.953628 MeV (megaelectronvolts) binding energy per nucleon | 8.225611 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Excitations
E_level | spin parity J^π | half-life τ_1/2 | width Δ 946.5 keV (kiloelectronvolts) | (unknown) | (unknown) | (unknown) 1612.8 keV (kiloelectronvolts) | (unknown) | (unknown) | (unknown) 2090 keV (kiloelectronvolts) | (unknown) | (unknown) | (unknown) 2680 keV (kiloelectronvolts) | (unknown) | (unknown) | (unknown) 3239 keV (kiloelectronvolts) | (unknown) | (unknown) | (unknown) 3432.9 keV (kiloelectronvolts) | (unknown) | (unknown) | (unknown) 3622.5 keV (kiloelectronvolts) | (unknown) | (unknown) | (unknown) 4142.9 keV (kiloelectronvolts) | (unknown) | (unknown) | (unknown) 4561.7 keV (kiloelectronvolts) | (unknown) | (unknown) | (unknown) 4808.6 keV (kiloelectronvolts) | (unknown) | (unknown) | (unknown)