Abstract
The neutron energy resolved three-dimensional imaging system using a high-speed video camera has been newly developed at Japan Proton Accelerator Research Complex (J-PARC). The aim for this research is to investigate more rapidly a spatial distribution of several elements and crystals in various kinds of materials or substances. A high-speed video camera (CMOS, 1300 k frame/sec) of the present system allows us to obtain TOF images consecutively resolved into narrow energy ranges in the pulsed neutron energy region from 0.01 eV to a few keV. We confirmed that the neutron transmission ratio obtained by the present system was consistent with that of theoretical expectation when a step-wedge sample made of Fe, from 5 mm to 10 mm in thickness, was used as a sample. And three-dimensional images reconstructed by the Filtered Back Projection method could be successfully enhanced the image contrast of specific materials by selecting neutron energy. The results show that there is the possibility to apply the present system for practical use in near future.
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