Frequently Asked Questions

We get asked a lot of questions about our technology and how it works. Here are answers to the more frequently asked ones


A muon (pronounced myoo·aan and named for the Greek letter mu (μ), which is used to represent it) is a naturally occurring sub-atomic particle produced by cosmic rays striking the Earth’s atmosphere. These rays are not harmful to us or any other life on the surface of Earth. Muons pass through the surface of the Earth on average about once per minute for every square centimetre. To make it more personal, a muon passes through your head once every second!

Muons lose energy progressively as they pass through the Earth’s surface. As they encounter higher-density material, muons lose energy at an accelerated rate, which reduces their intensity. The intensity, and hence the density of the materials encountered, can be measured.
Muon tomography maps the intensity of cosmic-ray muons underground, measuring the physical properties in a targeted search area, much like medical tomography images the interior of the body using x-rays. The resulting images are combined to produce a 3D model of any anomalies present. “Geotomography’ is tomography specific to the Earth.

Muons travel in straight lines from cosmic rays colliding with matter in the Earth’s upper atmosphere. Muons are slowed down as they enter the Earth’s surface, as they encounter material of different densities. Subsurface detectors in the survey area measure muon intensity, creating a 60° field of view (120° in total). The data captured by the detectors is transmitted to the surface, then via satellite to the Ideon cloud. The data is transformed into x-ray-like images of density anomalies in the survey area. Inversion technologies create subsurface 3D density delivered into client software tools.

Ideon’s proprietary detectors, imaging systems, inversion technologies, and artificial intelligence techniques generate 3-dimensional density signature maps that reliably identify underground anomalies, clearly distinguishing them from their surroundings. When working with clients, Ideon delivers a full survey design, analysis and a 3D density model of the surveyed area, which is then integrated into industry-standard software packages. We also incorporate other geophysical data sets into our final product so that our clients have a comprehensive model to aid in their decision-making.

Each of our imaging programs is tailored to the specific parameters of the client site and geological challenge. The factors we consider when forward-modelling a deployment include: size, depth, and geometric orientation of the target; the density contrast between the target and the host rock; the resolution required for optimal decision-making; the proximity of the target to our sensors; and the overall topography of the area. To deliver an accurate 3D model, we place multiple detectors at different depths and positions to provide different perspectives of the target.

We capture and measure muons at the rate they are generated by the universe. Depending on the depth of the project, size of the target, and density contrasts involved, this can require weeks to months of downhole imaging time. For time-sensitive projects, we are able to double the number of detectors to halve the imaging time required.

Muon tomography is the only straight-line subsurface imaging technology available today, delivering the highest available resolution along with precise anomaly location information. It uses a passive and free energy source (from space), offers the ability to image in noisy or conductive environments (where other techniques do not), provides insights from depths that other techniques cannot, and captures data continuously – improving imaging results over the course of a survey. This unique data source, combined with Ideon’s proprietary processing algorithms and multi-data-set analysis, gives our clients a comprehensive set of subsurface intelligence that they’ve never had access to before.

No, we don’t. Ideon offers a solution-as-a service – a simple approach that includes hardware, software, analysis and insights generation that creates value by unifying historically disparate data sets. We handle everything, from the design and deployment, through detailed analysis and equipment retrieval/redeployment, making it easy for our clients to get the subsurface intelligence they need.