Table 2.
The comparison of the integral count rates in the energy range of 7–2734 keV in several European underground experimental sites, as seen by the HPGe detectors
| Location | Boulby | Gran Sasso | Modane | Sieroszowice | ||
|---|---|---|---|---|---|---|
| Portable REGe spectrometer | Low-background HPGe spectrometer | Portable HPGe spectrometer | ||||
| Count rate (s−1) | 6.5–28 (several locations) | 8–60 (several locations) | 15–108 (several locations) | 5.79 (1) | 3.92 (1) | 1.95 (2)a |
| Source | [9] | [10] | [11] | This study | This study | [6] |
| Detector type | HPGe, p-type | HPGe, p-type | HPGe, p-type | HPGe, n-type | HPGe, n-type | HPGe, p-type |
| Relative efficiency (%) | 32 | 32 | 32 | 40 | 25 | 30 |
aDifferent measuring range (40–2700 keV) and detector endcap (without carbon-composite entrance window)