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The high sensitivity of HgI2 material for X-rays has been demonstrated previously. In this paper the focus is on the MTF (modulation transfer function), NPS (noise power spectra) and DQE (detective quantum efficiency) measurements and on the evaluations of a 13 cm x 13 cm size Hgl2 (mercuric iodide) coated X-ray imager with 127 mum pixel pitch. The imager was tested with 70 kVp X-ray beam and 21 mm...
Mercuric iodide (HgI2) and lead iodide (PbI2) materials have been investigated for several years as direct converter layers for digital x-ray imaging applications. A difficult challenge of both lead iodide and mercuric iodide is the higher than desired leakage currents. These currents are influenced by different factors such as applied electrical field, layer thickness, layer density, electrode structure,...
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