Input interpretation
W-178 Tb-157 | half-life
Results
W-178 | 21.6 days (21.1 to 21.93 days) Tb-157 | 70 years (63 to 79.5 yr)
Units
Relative values
| visual | ratios | | comparisons W-178 | | 8.5×10^-4 | 1 | 99.915% smaller Tb-157 | | 1 | 1200 | 120000% larger
Decay properties
| W-178 | Tb-157 half-life | 21.6 days (21.1 to 21.92 days) | 70 yr (63.1 to 79.4 yr) mean lifetime | 31.1 days (30.7 to 31.63 days) | 100 yr (88 to 114 yr) decay constant | 3.72×10^-7 per second | 3.1×10^-10 per second specific activity | 1260 TBq/g | 1.2 TBq/g width | 2.44×10^-22 eV | 2×10^-25 eV decay modes | ϵ (electron capture) | ϵ (electron capture) final decay products | Hf-178 (100%) | Gd-157 (100%)