Table 7 Minimum detectable surface activity of the detection model (unit: Bq/m2).
From: In-situ γ-ray analysis of ground surface radioactivity using portable HPGe γ spectrometer
Nuclide (energy/keV) (s) | 132Te (228) | 131I (364) | 133I (530) | 137Cs (662) | 60Co (1173) | 60Co (1332) | 124Sb (1691) |
|---|---|---|---|---|---|---|---|
100 | 6.43 | 5.89 | 5.28 | 5.62 | 5.19 | 4.08 | 5.99 |
1000 | 2.03 | 1.86 | 1.68 | 1.78 | 1.64 | 1.29 | 1.89 |
3600 | 1.08 | 0.98 | 0.89 | 0.94 | 0.86 | 0.68 | 1.00 |
7200 | 0.76 | 0.70 | 0.64 | 0.66 | 0.61 | 0.48 | 0.71 |
