Table A.4.
Abundances and energy thresholds for photonuclear reactions emitting neutrons for heavy isotopes.
| Isotope | Nat. (%) | Eth(γ, n) (MeV) | Eth(γ, 2n) (MeV) | Eth(γ, np) (MeV) | Eth(γ, nα) (MeV) |
|---|---|---|---|---|---|
| 144Sm | 3.07 | 10.52 | 19.13 | 16.18 | 10.44 |
| 147Sm | 14.99 | 6.34 | 14.76 | 13.36 | 3.81 |
| 148Sm | 11.24 | 8.14 | 14.48 | 15.24 | 5.83 |
| 149Sm | 13.82 | 5.87 | 14.01 | 13.45 | 3.88 |
| 150Sm | 7.38 | 7.99 | 13.86 | 15.55 | 6.12 |
| 151Sm | 0 | 5.60 | 13.58 | 13.87 | 4.15 |
| 152Sm | 26.75 | 8.26 | 13.85 | 16.53 | 7.11 |
| 154Sm | 22.75 | 7.97 | 13.84 | 16.56 | 8.58 |
| 158Tb | 0 | 6.78 | 15.52 | 12.30 | 6.60 |
| 159Tb | 100 | 8.13 | 14.91 | 14.07 | 8.29 |
| 165Ho | 100 | 7.99 | 14.66 | 13.88 | 7.56 |
| 181Ta | 99.988 | 7.58 | 14.22 | 13.34 | 5.55 |
| 180W | 0.12 | 8.41 | 15.37 | 14.40 | 5.65 |
| 182W | 26.50 | 8.08 | 14.75 | 14.67 | 5.86 |
| 183W | 14.31 | 6.19 | 14.27 | 13.29 | 4.43 |
| 184W | 30.64 | 7.41 | 13.60 | 14.64 | 5.74 |
| 186W | 28.43 | 7.19 | 12.95 | 15.03 | 5.60 |
| 197Au | 100 | 8.07 | 14.72 | 13.71 | 6.80 |
| 204Pb | 1.4 | 8.39 | 15.31 | 14.49 | 6.06 |
| 206Pb | 24.1 | 8.09 | 14.82 | 14.80 | 6.62 |
| 207Pb | 22.1 | 6.74 | 14.82 | 13.99 | 5.60 |
| 208Pb | 52.4 | 7.37 | 14.11 | 14.86 | 6.98 |
| 209Bi | 100 | 7.46 | 14.35 | 11.17 | 4.41 |
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