Input interpretation
Si-32 Np-229 | decay modes
Results
Si-32 | β^- (electron emission) Np-229 | β^+ (positron emission) | α (alpha emission)
Decay properties
| Si-32 | Np-229 half-life | 153 yr (130 to 176 yr) | 4 min (3.75 to 4.28 min) mean lifetime | 221 yr (187 to 254 yr) | 5.83 min (5.43 to 6.12 min) decay constant | 1.44×10^-10 per second | 0.00286 per second specific activity | 2.71 TBq/g | 7.51×10^6 TBq/g width | 6.55×10^-26 eV | 1.9×10^-18 eV decay modes | β^- (electron emission) | β^+ (positron emission) | α (alpha emission) final decay products | S-32 (100%) | Tl-205 (100%) | Pb-207 (3×10^-10%)
Decay modes
Si-32
decay mode | β^- (electron emission) branching ratio | 100% Q-value | 224.311 keV (kiloelectronvolts) daughter nuclide | P-32
Np-229
decay mode | β^+ (positron emission) branching ratio | 50% Q-value | 1.5467 MeV (megaelectronvolts) daughter nuclide | U-229 decay mode | α (alpha emission) branching ratio | 50% Q-value | 7.014 MeV (megaelectronvolts) daughter nuclide | Pa-225