Fast-neutron transmission spectroscopy for illicit substance detection

Thomas J. Yule; Bradley J. Micklich; Charles L. Fink; Leonid Sagalovsky

doi:10.1117/12.267909

27 February 1997 Fast-neutron transmission spectroscopy for illicit substance detection

Thomas J. Yule, Bradley J. Micklich, Charles L. Fink, Leonid Sagalovsky

Proceedings Volume 2867, International Conference Neutrons in Research and Industry; (1997) https://doi.org/10.1117/12.267909
Event: Fifth International Conference on Applications of Nuclear Techniques: Neutrons in Research and Industry, 1996, Crete, Greece

Abstract

Fast-Neutron Transmission Spectroscopy (FNTS) is being investigated for detection of explosives in luggage or other small containers. This technique uses an accelerator to generate nanosecond-pulsed deuteron beams that strike a target, producing a white source of neutrons. Elemental distributions along projections through the interrogated object are obtained by analyzing neutron transmission data. Tomographic reconstruction is used to determine the spatial variations of individual elemental densities are combined in a detection algorithm that indicates the presence or absence of explosives. The elemental unfolding and tomographic reconstruction algorithms have been validated by application to experimental data. System studies have been performed to study the operational characteristics and limitations of a FNTS system, and to determine the system's sensitivity to several important parameters such as flight path length and the position of the interrogated object.

Citation Download Citation

Thomas J. Yule, Bradley J. Micklich, Charles L. Fink, and Leonid Sagalovsky "Fast-neutron transmission spectroscopy for illicit substance detection", Proc. SPIE 2867, International Conference Neutrons in Research and Industry, (27 February 1997); https://doi.org/10.1117/12.267909

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