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Table 1
Correction factors for the case of sand matrix in a Marinelli beaker with a 78.5% efficient HPGe detector.
| Nuclide | Energy (keV) | Self-absorption Fs | True coincidence summing Fc | Spectral interference Fcsi |
|---|---|---|---|---|
| 210Pb | 46.54 | 1.66 | 1.00 | Negligible |
| 234Th (238U) | 63.3 | 1.43 | 1.00 | ∼ %7.5 due to Th contribution |
| 226Ra | 186.21 | 1.24 | 1.00 | A multiplying factor of 0.428 due to185.7 keV of 235U |
| 214Pb | 295.22 | 1.21 | 1.00 | Negligible |
| 228Ac | 338 | 1.19 | 1.04 | Negligible |
| 214Pb | 351.93 | 1.19 | 1.00 | Negligible |
| 8Be | 477.6 | 1.17 | 1.00 | No interference |
| 208Tl | 583.2 | 1.15 | 1.20 | Negligible |
| 214Bi | 609.32 | 1.15 | 1.16 | Negligible |
| 137Cs | 661.66 | 1.15 | 1.00 | No interference |
| 228Ac | 911 | 1.13 | 1.03 | Negligible |
| 234mPa (238U) | 1001.03 | 1.12 | 1.00 | ∼ 0.5% due to Th contribution |
| 226Ra | 1120.09 | 1.11 | 1.18 | Negligible |
| 40K | 1460.82 | 1.10 | 1.00 | ∼ 9.2% due to Th contribution |
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