In-line X-ray lensless imaging with lithium fluoride film detectors |
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Institution: | 1. Department of Electrical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India;2. Center for Lasers and Photonics, Indian Institute of Technology Kanpur, Kanpur 208016, India |
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Abstract: | In this work, we present preliminary in-line X-ray lensless projection imaging results at a synchrotron facility by using novel solid-state detectors based on non-destructive readout of photoluminescent colour centres in lithium fluoride thin films. The peculiarities of LiF radiation detectors are high spatial resolution on a large field of view, wide dynamic range, versatility and simplicity of use. These properties offered the opportunity to test a broadband X-ray synchrotron source for lensless projection imaging experiments at the TopoTomo beamline of the ANKA synchrotron facility by using a white beam spectrum (3–40 keV). Edge-enhancement effects were observed for the first time on a test object; they are discussed and compared with simulations, on the basis of the colour centre photoluminescence linear response found in the investigated irradiation conditions. |
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