Uranium series
| Uranium-238 (α, 4.468 × 109 a) | ||
| Thorium-234 (β−, 24.10 d) | ||
| Protactinium-234m (1.16 min) | ||
| β−, 99.84% | IT, 0.16% | |
| Protactinium-234 (β−, 6.70 h) | ||
| Uranium-234 (α, 2.455 × 105 a) | ||
| Thorium-230 (α, 7.538 × 104 a) | ||
| Radium-226 (α, 1602 a) | ||
| Radon-222 (α, 3.8235 d) | ||
| Polonium-218 (α, 3.10 min) | ||
| α, 99.98% | β−, 0.02% | |
| Lead-214 (β−, 26.8 min) |
Astatine-218 (1.5 s) | |
| α, 99.90% | β−, 0.10% | |
| Bismuth-214 (19.9 min) |
Radon-218 (α, 35 ms) | |
| α, 0.02% | β−, 99.98% | |
| Thallium-210 (β−, 1.30 min) |
Polonium-214 (α, 0.1643 ms) | |
| Lead-210 (β−, 22.3 a) | ||
| Bismuth-210 (5.013 d) | ||
| β−, 99.99987% | α, 0.00013% | |
| Polonium-210 (α, 138.376 d) |
Thallium-206 (β−, 4.199 min) | |
| Lead-206 (STABLE) | ||
The uranium series, also known as the radium series, is a decay chain starting with the naturally-occuring uranium-238 and ending in the stable lead-206.
References
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