P-type HPGe coaxial detector with a thin contact and a beryllium or carbon fibre input window, extending the energy range down to 3 keV.
The thin contact structure, combined with a beryllium or carbon fibre input window, ensures efficient detection of low-energy photons, while the GCDX still functions as a standard coaxial detector up to 10 MeV. The complete set includes the detector, SHP preamplifier, cryostat, cooling system and cable set.
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| Detector type | P-type HPGe coaxial with thin contact |
|---|---|
| Relative efficiency | 10 % to 100 % (12 models, GCDX-10175 to GCDX-100210) |
| Energy range | 3 keV to 10 MeV |
| Input window | Beryllium or carbon fibre |
| Energy resolution at 5.9 keV | 400 eV to 800 eV depending on model |
| Energy resolution at 122 keV | 720 eV to 1000 eV depending on model |
| Energy resolution at 1.33 MeV | 1.75 keV to 2.10 keV depending on model |
| Peak/Compton ratio | 41:1 to 81:1 depending on model |
| Cooling system | LN2, Monolith or Nicole |
Source: Baltic Scientific Instruments, GCDX brochure (bsi.lv, retrieved November 2026). Full specifications are available in the documents.
