Input interpretation
![Ac-231 | decay modes](../image_source/68bf6b76eb2ed2975745690dab18f252.png)
Ac-231 | decay modes
Result
![β^- (electron emission)](../image_source/b70ce4070b2633ea8906cf9da7b8776e.png)
β^- (electron emission)
Decay properties
![half-life | 7.5 minutes (7.32 to 7.68 min) mean lifetime | 10.8 minutes (10.6 to 11.1 min) decay constant | 0.00154 per second specific activity | 4.01×10^6 TBq/g (terabecquerels per gram) width | 1×10^-18 eV (electronvolts) decay modes | β^- (electron emission) final decay products | Pb-207 (100%) | Tl-205 (9×10^-10) | Pb-208 (1×10^-14)](../image_source/351720cc6d4487992dafe9705e812e91.png)
half-life | 7.5 minutes (7.32 to 7.68 min) mean lifetime | 10.8 minutes (10.6 to 11.1 min) decay constant | 0.00154 per second specific activity | 4.01×10^6 TBq/g (terabecquerels per gram) width | 1×10^-18 eV (electronvolts) decay modes | β^- (electron emission) final decay products | Pb-207 (100%) | Tl-205 (9×10^-10) | Pb-208 (1×10^-14)
Decay mode
![decay mode | β^- (electron emission) Q-value | 2.1 MeV (megaelectronvolts) daughter nuclide | Th-231](../image_source/d3ddbca89af3a7d9d1b8d844c100b98b.png)
decay mode | β^- (electron emission) Q-value | 2.1 MeV (megaelectronvolts) daughter nuclide | Th-231