Input interpretation
Th-232 Th-228 | half-life
Results
Th-232 | 14 Gyr (gigayears) (-22 to 50 Gyr) Th-228 | 1.9116 years (1.9095 to 1.9137 yr)
Units
Relative values
| visual | ratios | | comparisons Th-228 | | 1.37×10^-10 | 1 | 99.9999999863% smaller Th-232 | | 1 | 7.32 billion | 7.32×10^11% larger
Decay properties
| Th-232 | Th-228 half-life | 14 Gyr (-18 to 40 Gyr) | 1.9116 yr (1.9096 to 1.9136 yr) mean lifetime | 20.2 Gyr (-30 to 90 Gyr) | 2.7579 yr (2.7548 to 2.7609 yr) decay constant | 1.57×10^-18 per second | 1.1498×10^-8 per second specific activity | 4.07 kBq/g | 30.366 TBq/g width | 7.16×10^-34 eV | 5.2454×10^-24 eV decay modes | α (alpha emission) | SF (spontaneous fission) | ^24Ne +^26Ne (double cluster emission) | 2β^- (double beta decay) | α (alpha emission) | ^20O (cluster emission) final decay products | Pb-208 (100%) | Pb-206 (4×10^-9%) | Pb-204 (0%) | Hg-200 (0%) | Hg-204 (0%) | Pb-208 (100%) | Pb-206 (4×10^-9%)