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- W2091029904 abstract "ABSTRACT New results for polycrystalline Hg12 detectors are reported here. Due to its decent electrical properties and high stopping powerfor X-rays and gamma rays, Hg12 is a good candidate for many medical imaging applications. Hg12 were deposited by a hot wallPhysical Vapor Deposition (PVD) method, and the electrical properties of the films, including X-ray response and dark currentdata are reported. Results of imaging capabilities and spatial resolution obtained by polycrystalline Hg12 deposited onto a 2x2TFT imaging array on an amorphous silicon substrate are also given. These tests were carried out at Xerox-PARC ResearchCenter.Keywords: imaging, x-ray, polycrystalline, mercuric iodide1. IntroductionThere is intense interest in digital radiography, which offers convenience, faster results, ease of processing and ease of storagethan traditional photographic techniques. Applications include medical diagnostics, port security and non-destructive testing.There are two ways to obtain images: (i) indirect detection whereby a phosphor coating is combined with a photodiode lightsensor material, and (ii) direct detection using a thick X-ray sensitive photoconductor. Both these detection methods utilize pixelarrays. The pixel size limits the spatial resolution that is achievable, and is one of the fundamental design parameters of adetector." @default.
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- W2091029904 date "2001-12-19" @default.
- W2091029904 modified "2023-09-27" @default.
- W2091029904 title "<title>Electrical properties of polycrystalline mercuric iodide x-ray detectors</title>" @default.
- W2091029904 doi "https://doi.org/10.1117/12.450792" @default.
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