Well-type HPGe detector for small samples, measuring in almost 4π geometry with better efficiency than regular coaxial HPGe detectors.
The GWD is used for detection of gamma rays in nuclear energy and environmental control, industry, scientific research and nuclear medicine, when the user is dealing with a small amount of sample and wants better efficiency than with regular coaxial HPGe detectors.
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| Detector type | HPGe well-type |
|---|---|
| Relative efficiency | 15 % to 70 % and higher |
| Energy range | 20 keV to 10 MeV |
| Well diameter | 10 mm or 16 mm |
| Nominal volume | 90 cc to 360 cc (models GWD-1520 to GWD-7024) |
| Well material | Aluminium |
| Cooling system | LN2, Monolith or Nicole |
Source: Baltic Scientific Instruments, GWD brochure (bsi.lv, retrieved November 2026). Full specifications are available in the documents.
