Laser-based combined systems for detection of contraband, hazardous and illicit materials

The proposed project explores the potential use of well-established techniques for detecting hidden contraband, hazardous and illicit materials in a single, unique device based on laser-beam-driven particle and radiation production. These techniques include neutron activation and neutron radiography, proton beam-induced gamma-ray resonance and X-ray tomography. Relevant experimental results confirm the high-efficiency production of particles (protons, deuterons and neutrons), X-rays and gamma-rays by high-intensity laser beam interaction with various selected targets. Conventional applied methods and techniques for detection present advantages and disadvantages depending on the application field. Currently, there is no single dedicated method for the safe and simultaneous detection of various contrabands, such as explosives, narcotics, and radioactive and nuclear materials. This challenge could be addressed by employing a pulsed high-intensity laser beam that selectively interacts with different targets to produce particles and radiation with specific energy spectra, covering the diverse needs for detecting various contraband materials. The short time-sharing between different targets allows for quick selection between particles (protons, deuterons, neutrons) and/or radiation (X-rays, gamma-rays) to scan containers by simply reorienting the laser beam propagation. A laser-driven pulsed ion source significantly increases the number of produced ions, enhancing resolution and decreasing the scanning time. The proposed methodology and technology are versatile, fast, transportable and can be employed for all types of transport and in any location.