Input interpretation
Al-31 | daughter nuclides
Result
Si-31 | Si-30
Natural abundance
Si-31 | Si-30 0 | 3.087%
Decay properties
| Si-31 | Si-30 half-life | 157.3 min (156.98 to 157.62 min) | (stable) mean lifetime | 227 min (226.48 to 227.4 min) | (stable) decay constant | 7.3421×10^-5 per second | 0 per second specific activity | 1.4274×10^6 TBq/g | 0 Bq/g width | 4.834×10^-20 eV | 0 eV decay modes | β^- (electron emission) | final decay products | P-31 (100%) | Si-30 (100%)
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
Si-31
decay mode | β^- (electron emission) branching ratio | 100% Q-value | 1.491879 MeV (megaelectronvolts) daughter nuclide | P-31
Si-30
![Column[^T, Spacings->1.5]](../image_source/310c118bee616adaef56340cedb1d911.png)
Column[^T, Spacings->1.5]
Radiation shielding
| Si-31 lead | 1.07 mm portland concrete | 3.6 mm water | 7.03 mm air | 6.16 m
Decay chain
Si-31
Decay chain Si-31
Si-30
Decay chain Si-30
Mass properties
| Si-31 | Si-30 atomic number (Z) | 14 | 14 mass number (A) | 31 | 30 neutron number | 17 | 16 atomic mass | 30.975363226999998 u (unified atomic mass units) | 29.973770171 u (unified atomic mass units) mass excess | -22.949006 MeV (megaelectronvolts) | -24.432928 MeV (megaelectronvolts) binding energy per nucleon | 8.45829 MeV (megaelectronvolts) | 8.520653 MeV (megaelectronvolts)
Mass properties
Nearby isotopes
Nearby isotopes
Quantum properties
| Si-31 | Si-30 spin parity J^π | 3/2^+ (atomic fermion) | 0^+ (atomic boson) magnetic moment | (unknown) | 0 μ_N
Quantum properties