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Related Experiment Videos

Direct imaging of explosives.

E A Knapp1, R B Moler, A W Saunders

  • 1World Physics Technologies Inc., Blacksburg, VA 24060, USA.

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine
|September 26, 2000
PubMed
Summary
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A new Nitrogen Camera can detect explosives by imaging nitrogen concentrations, even at low densities. This technology shows promise for detecting buried mines and explosives, with potential for mobile field deployment.

Area of Science:

  • Nuclear Physics
  • Explosives Detection
  • Imaging Technology

Background:

  • Current explosive detection methods face challenges with metal interference and sensitivity to low nitrogen concentrations.
  • Imaging nitrogen could enable robust screening, differentiating explosives from non-explosive materials like fertilizers.

Purpose of the Study:

  • To develop and demonstrate a novel imaging technique for detecting concealed explosives based on nitrogen content.
  • To assess the feasibility of the Nitrogen Camera for identifying buried anti-personnel mines and bulk explosives like SEMTEX.

Main Methods:

  • Utilizing an electron accelerator to induce photonuclear reactions and registering unique decays.
  • Developing a Nitrogen Camera capable of imaging elemental nitrogen at surface densities relevant to explosives.

Related Experiment Videos

  • Experimentally validating the camera's performance with mine simulants and SEMTEX samples.

    • Main Results:

    • The Nitrogen Camera successfully produced 180-pixel intensity images of elemental nitrogen in a 200 g mine simulant and 125 g SEMTEX.
    • The technique demonstrated sensitivity to low nitrogen surface densities, crucial for detecting concealed explosives.
    • Progress was reported on a mobile electron accelerator (70 MeV microtron) for field deployment.

    Conclusions:

    • The Nitrogen Camera shows significant potential for effective explosive detection, particularly for buried mines and bulk explosives.
    • Mobility of the Nitrogen Camera, enabled by the transportable microtron, could revolutionize field screening in military and demining operations.
    • Further development, including oxygen imaging, is needed for comprehensive material discrimination.