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Contribution distance to γ-ray of different energy.
| Radionuclide | Energy (keV) | 90% contribution distance (cm) | 95% contribution distance (cm) |
|---|---|---|---|
| 132Te | 228 | 457.6 | 558.1 |
| 131I | 364 | 471.5 | 575.0 |
| 133I | 530 | 478.4 | 583.5 |
| 137Cs | 662 | 489.3 | 596.7 |
| 60Co | 1173 | 496.8 | 605.9 |
| 60Co | 1332 | 507.1 | 618.5 |
| 124Sb | 1691 | 512.5 | 625.0 |
