Abstract
Both X-ray imaging and neutron imaging are essential methods in non-destructive testing. In this work, a bimodal imaging method combining neutron and X-ray imaging is introduced. The experiment is based on a small electron accelerator-based photoneutron source that can simultaneously generate the following two kinds of radiations: X-ray and neutron. This identification method utilizes the attenuation difference of the two rays’ incidence on the same material to determine the material’s properties based on dual-imaging fusion. It can enhance the identification of the materials from single ray imaging and has the potential for widespread use in on-site, non-destructive testing where metallic materials and non-metallic materials are mixed.
Highlights
Both X-ray imaging and neutron imaging have proven capabilities in non-destructive assays (NDAs) [1]
A complementary metal oxide semiconductor (CMOS) camera registers the two images with the aid of an optical system composed of the mirror and lenses. (b) Photograph of the bimodal imaging system driven by a 9 MeV e-LINAC
The experimental results show that when the 9 MeV e-LINAC works at a 100 μA current, a 2500 neutron/cm2 /s thermal neutron flux 10 m away can be acquired for the neutron imaging
Summary
Both X-ray imaging and neutron imaging have proven capabilities in non-destructive assays (NDAs) [1]. The inspected object’s mass thickness is unknown and material identification cannot be accomplished merely by the photon or the neutron attenuation information. In this context, some researchers began investigating fusing X-ray imaging and neutron imaging technologies to enhance the capability for identifying materials [2]. Combining the two imaging technologies can be beneficial in the study of renewable energies [3], biology [4], paleontology [5], porous media [6], and cultural heritage [7].
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