The MS-700 gamma spectrometer used for drone-borne mapping.

Medusa’s gamma-ray spectrometers are commonly used for drone-borne mapping of soil properties and geology and our sensors have proven their application. But what if a client needs to map specific isotopes. That’s why we built our highest resolution gamma-spectrometer ever!

Read more

MS-1200 sub onderwater gamma-ray spectrometer

Medusa’s gamma spectrometers are used worldwide to map soil and sediments. Due to the rapidly growing demand for sediment mapping surveys, Medusa Radiometrics invests in making the underwater gamma-ray spectrometers more manageable and more efficient. The sensor will be made autonomous, and we will develop technology to allow the sensor to communicate wirelessly with the vessel. The European Regional Development Fund (ERDF) funds the research.

Read more

MS-1200 sub underwater gamma-ray spectrometer

Technology expected to offer significant cost, safety and environmental benefits pre- and post-remediation of contaminated sites.

Read more

As a high tech company, research and development is at the very heart of what we do. Over the past 20 years, we have invested heavily in radiometric research and product development – investments in projects that almost always include collaborations with research institutes, universities and colleague companies. In all these R&D collaborations, sharing knowledge has been the most important key to success! We love the “European” approach of not being afraid of sharing technological insights with our business partners or even with our competitors – at the end we all benefit! Read more

Gamma Ray Sensor MS1000

Recently we finished a first series of flight tests of our “drone-borne” gamma-ray sensor. To answer to the increasing demand for drone-borne sensing systems, we decided almost a year ago, to start the development of a lightweight and rugged version of our gamma-ray detection systems; the “drone detector”. The aim of the project is to create a low-weight, low power and fully self-contained sensor system fit to be used underneath a “standard” unmanned areal vehicle (UAV). A challenge that – as we found – not only involves a fully new detector design, both in hardware as in software, but also a careful look at the drone specifics as we found out the hard way when our first prototype crashed while flying…

Read more

Sensor on Quad in Dutch Flevopolder

How do you increase the accuracy of taking samples in the field? Dutch Wageningen University & Research uses Medusa’s gamma-ray spectrometer to more accurately define its sample locations and thus reducing the risk of false sampling.

Sediment mapping with a gamma ray spectrometer

In recent years, laws and regulations in the field of ecology became more strict due to public pressure. Therefore, the discharge of fines during dredging and land reclamation works and its impact on seafloor habitats is an important aspect in environmental impact assessments.

Farmers recognizing patterns in the field

To increase the (financial) yield of Spanish farmers on low-yielding rainfed soils, a EU LIFE+ project ‘Crops for better soil’ was initiated. The aim was to improve the soil itself by applying several agronomic measures and by better understanding the soil. To this purpose Medusa developed an efficient and effective soil sensing system on a […]

Gamma ray spectrometer-light-weight plane in Madagascar

The use of airborne gamma-ray measurements has a long-standing tradition in geophysical research. The airborne measurement of gamma radiation emitted by naturally occurring elements like potassium (40K), thorium (232Th) and uranium (238U) is a common method in exploration.


Airborne gamma-ray surveys (GRS) have been routinely applied for decades to map the earth’s surface. Recent advancements in computing power and detection technology have significantly improved and it is now possible for gamma-ray systems to be manufactured more compactly, rugged and light-weight. These next generation gamma ray spectrometers open boundless opportunities to use these systems […]