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Nuclear-decay and energy-absorption data used to calculate Гo for iodine-125.
| Radionuclide | Radiation type | Energy E (keV) | Number per transition P | Energy-absorption coefficient μen/ρ (m2/kg) | E P μen/ρ (keV m2/kg) |
|---|---|---|---|---|---|
| Tellurium-125 | x ray Kα2 | 27.2 | 0.398 | 0.0212 | 0.230 |
| Tellurium-125 | x ray Kα1 | 27.5 | 0.742 | 0.0204 | 0.416 |
| Tellurium-125 | x ray Kβ | 31 | 0.258 | 0.0140 | 0.112 |
| Iodine-125 | γ ray | 35.5 | 0.0667 | 0.0094 | 0.022 |
