Template:Actinium series
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[edit] Actinium series
The 4n+3 chain of U-235 is commonly called the "actinium series".
| nuclide | historic name (short) | historic name (long) | decay mode | half life | energy released, MeV | product of decay |
|---|---|---|---|---|---|---|
| 239Pu | α | 2.41·104 a | 5.244 | 235U | ||
| 235U | AcU | Actin Uranium | α | 7.04·108 a | 4.678 | 231Th |
| 231Th | UY | Uranium Y | β- | 25.52 h | 0.391 | 231Pa |
| 231Pa | α | 32760 a | 5.150 | 227Ac | ||
| 227Ac | Ac | Actinium | β- 98.62% α 1.38% |
21.772 a | 0.045 5.042 |
227Th 223Fr |
| 227Th | RdAc | Radioactinium | α | 18.68 d | 6.147 | 223Ra |
| 223Fr | AcK | Actinium K | β- | 22.00 min | 1.149 | 223Ra |
| 223Ra | AcX | Actinium X | α | 11.43 d | 5.979 | 219Rn |
| 219Rn | An | Actinon | α | 3.96 s | 6.946 | 215Po |
| 215Po | AcA | Actinium A | α 99.99977% β- 0.00023% |
1.781 ms | 7.527 0.715 |
211Pb 215At |
| 215At | α | 0.1 ms | 8.178 | 211Bi | ||
| 211Pb | AcB | Actinium B | β- | 36.1 min | 1.367 | 211Bi |
| 211Bi | AcC | Actinium C | α 99.724% β- 0.276% |
2.14 min | 6.751 0.575 |
207Tl 211Po |
| 211Po | AcC' | Actinium C' | α | 516 ms | 7.595 | 207Pb |
| 207Tl | AcC" | Actinium C" | β- | 4.77 min | 1.418 | 207Pb |
| 207Pb | . | stable | . | . |
