Beginning Applications of Muon Scattering Tomography

High-Z material can be detected and located in three dimensions using radiographs formed by cosmic-ray muons. The detection of these materials hidden inside large volumes of ordinary cargo is an important and timely task given the danger associated with illegal transport of uranium and heavier elements. Existing radiography techniques are inefficient for shielded material, are often expensive and involve radiation hazards, such as gamma rays and X-rays.

Muon scattering tomography uses two detection systems with the test subject placed in between to produce a 3D density distribution model of the analysed volume. This technique was developed by Los Alamos National Laboratory as a way to detect nuclear smuggling.

Borozdin et al. (2003) demonstrated that compact high-Z objects can be detected and located in three dimensions with muon radiography. A muon detector portal big enough to analyse trucks was implemented in Freeport, Bahamas. A more recent study published by Antonuccio et al. (2017) shows how such a portal works and how it will be built.

Publication:

"Search for Hidden Chambers in the Pyramids" (Alvarez et al., 1970)