Gamma-ray sensors for gathering soil, sediment, and mineral composition

Walk, drive or fly. Collect high-resolution data with a lightweight, sturdy and easy to use sensor.

Product overview

MS-350 with mDOS on tablet
UAV gamma-ray measurement

The soil is ticking

Every soil contains naturally occuring radionuclides. With the Medusa sensor, even the slightest variations in radionuclide concentrations within the soil can be detected, offering valuable insights into the soil's composition.


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Applications

Gamma-ray soil sampling in agricultural field

Soil & sediment mapping

Soil composition is crucial for professionals like soil scientists, agronomists, environmental scientists, and farmers. Conventional methods provide limited insights into soil heterogeneity. Our advanced sensors enable digital mapping of soil texture, revealing genuine field diversity for informed decision-making in agriculture, land management, and environmental conservation.

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Contamination mapping

Contamination of soil and sediments by heavy metals and organic compounds poses significant environmental and economic concerns, particularly in floodplains and waterbodies. Gamma-ray sensors have become an effective means of accurately mapping the distribution of soil and sediment contamination, offering dependable and comprehensive data on spatial variations which are used to manage and dispose of contaminated sites.  

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Mineral exploration and remediation

Gamma-ray sensors traditionally used in small aircraft for geophysics can now be deployed under drones. They provide valuable insights into the composition and structure of the Earth's subsurface, enabling geologists to detect, map, and remediate various elements and minerals. This capability greatly facilitates mineral exploration and contaminated site remediation efforts.

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mDOS & Gamman

System operation

The patented system is designed for easy operation in the field. Before measurement, a small hole (30 mm diameter) should be drilled by a hand auger or other coring device. The sensor is placed in the hole up to the preferred depth. Guiding and fixing the position is made easy using the provided guiding mount. Data acquisition is done with an app on an Android phone or tablet. The app will assist in positioning the sensor by continuously displaying the actual depth, which is determined by the build in depth sensor. A measurement can be started from the app, and within 30 seconds, an accuracy of ~0.01g/cm3 can be achieved. For correction to dry bulk density values, a model is used that incorporates moisture measurements from an internal capacitance-based moisture sensor. Positions of the measurements are stored automatically using the GPS inside the sensor. RTK accuracy can be enabled.

mDOS user interface

Our sensors

Weight optimized sensors

Maximum efficiency sensors

Stationairy sensors

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Soil mapping made easy

What sets a Medusa detector apart?

We are committed to providing geophysicists around the world with efficient, lightweight, and robust gamma-ray survey systems that are easy to use, thanks to our innovative sensor design and smart data analysis models.

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