Product overview
How do our gamma-ray sensors work?
Medusa provides a variety of survey tools designed for effortless measurement of spatial soil variation. Our gamma-ray spectrometers, at the core of these tools, passively detect the natural radioactivity in the topsoil. They are incredibly user-friendly, making it easy for anyone to use.
On this page, you can explore the diverse range of sensor sizes provided by Medusa Radiometrics. Each sensor is tailored for a distinct application. For those interested in the underlying principles, an explanation of using gamma-ray spectrometers for soil information gathering is available at the page's end.
Maximum efficiency sensors
The MS-4000 airborne gamma-ray sensor. A detector used by geophysical survey companies, geotechnical consultants, and research institutes to capture soil variation in large areas.
| Use | |
|---|---|
| Typical usage | Air-borne |
| Mapping speeds | Up to 90 km/h |
| Applications | Mineral and soil mapping |
| Specs | |
|---|---|
| Scintillation crystal | 4000 ml CsI |
| Weight | 29 Kg |
| Sensors | Spectrometer, GPS, PTH |
The MS-2000 detector is optimized for efficient soil and sediment mapping while mounted on an off-road vehicle. Robust, efficient, and reliable in harsh conditions.
| Use | |
|---|---|
| Typical usage | Vehicle-borne |
| Mapping speeds | Up to 45 km/h |
| Applications | Mineral and soil mapping |
| Specs | |
|---|---|
| Scintillation crystal | 2000 ml CsI |
| Weight | 12 kg |
| Sensors | Spectrometer, GPS, PTH |
Weight optimized sensors
The Medusa Radiometrics MS-1000 detector is an autonomous and robust system suitable for drone-borne surveys for mineral prospecting, contamination mapping, and efficient monitoring applications.
| Use | |
|---|---|
| Typical usage | Drone-borne |
| Mapping speeds | Up to 30 km/h |
| Applications | Mining & environmental |
| Specs | |
|---|---|
| Scintillation crystal | 1000 ml Csl |
| Weight | 6.7 kg |
| Sensors | Spectrometer, GPS, PTH |
The MS-700 is, like its big brother, the MS-1000, optimized for drone use. Its payload under 5 kg makes it well-suited for off-the-shelf drones while maximizing its efficiency per unit of weight.
| Use | |
|---|---|
| Typical usage | Handheld, drone-borne |
| Mapping speeds | Up to 20 km/h |
| Applications | Mineral and soil mapping |
| Specs | |
|---|---|
| Scintillation crystal | 700 ml Csl |
| Weight | 4.7 kg |
| Sensors | Spectrometer, GPS, PTH |
The MS-350 is designed for hand-held surveys. However, it is also successfully used as an ultralight drone-borne system. With its weight below 3 kg, it is well-suited for smaller drones.
| Use | |
|---|---|
| Typical usage | Handheld, drone-borne |
| Mapping speeds | Up to 15 km/h |
| Applications | Mineral and soil mapping |
| Specs | |
|---|---|
| Scintillation crystal | 350 ml Csl |
| Weight | 2.7 kg |
| Sensors | Spectrometer, GPS, PTH |
Stationary sensors
The gSMS is designed for stationary, long-term outdoor measurements. The data is uploaded to the cloud to give insight into the readings, used for monitoring of radionuclides and soil moisture.
| Use | |
|---|---|
| Typical usage | Stationary |
| Mapping speeds | Stationary |
| Applications | Monitoring, soil moisture determination |
| Specs | |
|---|---|
| Scintillation crystal | 100 ml Csl |
| Weight | 1.5 kg |
| Sensors | Spectrometer, GPS, PTH, rain monitor |
Accessories
mDOS & Gamman
mDOS
Whether doing an airborne survey, locating a lost source with a UAV, or using our detector for a handheld survey for mapping the environment, you can count on using the same familiar interface. mDOS is developed for in-the-field usage. Optimized for real-time monitoring, ease of use and automating your survey workflow.
GammAn
GammAn is our comprehensive post-processing software tailored specifically for analyzing measurement results obtained from our gamma-ray detection systems.
Both mDOS and Gamman have been developed with a focus on user-friendliness, ensuring that users of all skill levels can effortlessly navigate and leverage the full potential of our detection systems. Whether you are a seasoned expert or new to gamma-ray analysis, our software packages provide the tools you need for accurate measurements and meaningful data interpretation.
The soil is ticking
Every soil contains soil radionuclides like potassium (K-40), uranium (U-238), thorium (Th-232), and sometimes cesium (Cs-137). The Medusa sensor can measure the signals emitted by these radionuclides. With our sensor, even the smallest variations in radionuclide concentrations within the soil can be detected, offering valuable insights into the soil's composition.
The fingerprint of the soil
Our sensors provide accurate insights into soil composition and a wide range of other soil parameters. In fact, the radionuclide signal is so distinctive that it is often referred to as the soil's fingerprint. Our sensors are used to measure soil composition and diverse soil properties including soil texture, minerals, and soil pollutants like heavy metals.
Size matters
Medusa has developed a variety of sensors designed for specific applications. Although all sensors share the same technology, operating system, robust electronics, and easy-to-use interface, the difference lies in their measurement efficiency. Larger sensors offer enhanced efficiency, enabling faster survey speeds and larger survey heights.
Finding the right sensor for the job is an intricate interplay between the accuracy needed on one hand and parameters such as the working speed, measurement height, and available payload on the other hand. For instance, when using drones, the available payload will restrict the maximum detector weight.
