Input interpretation
At-217 W-170 | decay modes
Results
At-217 | α (alpha emission) | β^- (electron emission) W-170 | β^+ (positron emission) | α (alpha emission)
Decay properties
| At-217 | W-170 half-life | 32.3 ms (31.87 to 32.73 ms) | 145 s (142.7 to 147.7 s) mean lifetime | 46.6 ms (45.98 to 47.22 ms) | 209 s (205.8 to 213.1 s) decay constant | 21.5 per second | 0.00478 per second specific activity | 5.96×10^10 TBq/g | 1.7×10^7 TBq/g width | 1.41×10^-14 eV | 3.14×10^-18 eV decay modes | α (alpha emission) | β^- (electron emission) | β^+ (positron emission) | α (alpha emission) final decay products | Tl-205 (100%) | Yb-170 (99%) | Er-166 (1%)
Decay modes
At-217
decay mode | α (alpha emission) branching ratio | 100% Q-value | 7.20129 MeV (megaelectronvolts) daughter nuclide | Bi-213 decay mode | β^- (electron emission) branching ratio | 0.008% Q-value | 736.95 keV (kiloelectronvolts) daughter nuclide | Rn-217
W-170
decay mode | β^+ (positron emission) branching ratio | 100% Q-value | 1.8221 MeV (megaelectronvolts) daughter nuclide | Ta-170 decay mode | α (alpha emission) branching ratio | 1% Q-value | 4.1407 MeV (megaelectronvolts) daughter nuclide | Hf-166