1Overview
The Medusa MS-Series are passive gamma-ray survey spectrometers built for fast, drone-mounted and mobile radiometric mapping. They detect natural gamma radiation (potassium-40, uranium-238, thorium-232, and cesium-137) along with total counts. Operation is simple enough for a first-time surveyor, yet the data is rich enough for an experienced one.
Applications span soil science, precision agriculture, geochemical mapping, contamination assessment, and radiometric surveying. The series scales from a compact 350 ml crystal up to a 4000 ml configuration, so survey speed and sensitivity can be matched to the platform and the mission.
2Model Lineup
Five models share the same survey workflow and recording rate. They differ in crystal volume, which sets the trade between mapping speed, sensitivity, and weight. Larger crystals collect more counts per second, so they support higher survey speeds on faster platforms.
| Model | Crystal (CsI) | Mapping speed | Weight | Recording rate |
|---|---|---|---|---|
| MS-350 | 3×3 in (350 ml) | up to 15 km/h | 2.7 kg | up to 5 Hz |
| MS-700 | 3×6 in (700 ml) | up to 20 km/h | 4.7 kg | up to 5 Hz |
| MS-1000 | 3×9 in (1000 ml) | up to 30 km/h | 6.7 kg | up to 5 Hz |
| MS-2000 | 3.5×12 in (2000 ml) | up to 45 km/h | 12 kg | up to 5 Hz |
| MS-4000 | 4×4×16 in (4000 ml) | up to 90 km/h | 29 kg | up to 5 Hz |
3Common Specifications
The following specifications are shared across the MS-Series.
| Parameter | Specification |
|---|---|
| Detected isotopes | K-40, U-238, Th-232, Cs-137, plus total counts |
| GPS | uBlox ZED-P9P, 1.5 m CEP, better than 1 cm with RTK |
| Environmental | IP65, operating range -20 to +65 °C |
| Storage | 16 GB internal |
| Connectivity | Wi-Fi, Ethernet, RS-232 |
4Applications
- Soil science and precision agriculture
- Geochemical and mineral mapping
- Environmental contamination assessment
- Drone-based radiometric survey
