DUNBID, the Delft University neutron backscattering imaging detector.
In the search for low-metallic land mines, the neutron backscattering technique may be applied if the soil is sufficiently dry. An advantage of this method is the speed of detection: the scanning speed may be made comparable to that of a metal detector. A two-dimensional position sensitive detector is tested to obtain an image of the back scattered thermal neutron radiation. Results of experiments using a radionuclide neutron source are presented. The on-mine to no-mine signal ratio can be improved by the application of a window on the neutron time-of-flight. Results using a pulsed neutron generator are also presented.
Bom
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Delft University of Technology, Mekelweg 15, 2629 JB Delft, The Netherlands. vb@iri.tudelft.nl
van Eijk
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CW
Ali
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D005107:Explosions / Q000517:prevention & control*; D009502:Neutrons; D019047:Phantoms, Imaging; D012542:Scattering, Radiation