Characterization of high spatial resolution lithium fluoride X-ray detectors

The response of lithium fluoride (LiF) crystal detectors to monochromatic X-rays is measured in the multi-kilo-electron-volt range. This response, as a function of the X-ray dose, is independent of photon energy with no saturation level found. The response, as a function of the incident energy flux,...

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Bibliographic Details
Published in:Review of scientific instruments 2019-06, Vol.90 (6), p.063702-063702
Main Authors: Mabey, P., Albertazzi, B., Michel, Th, Rigon, G., Makarov, S., Ozaki, N., Matsuoka, T., Pikuz, S., Pikuz, T., Koenig, M.
Format: Article
Language:English
Subjects:
Attenuation
Feasibility studies
Fluorides
Free electron lasers
Instrumentation and Detectors
Lithium
Lithium fluoride
Microscopes
Photometry
Photons
Physics
Scientific apparatus & instruments
Sensors
Spatial resolution
X ray detectors
X-rays
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Summary:The response of lithium fluoride (LiF) crystal detectors to monochromatic X-rays is measured in the multi-kilo-electron-volt range. This response, as a function of the X-ray dose, is independent of photon energy with no saturation level found. The response, as a function of the incident energy flux, is found to increase for photons of lower energy due to the differing attenuation lengths of X-ray photons within the crystal. Small differences are seen between different confocal microscopes used to scan the data, suggesting the need for absolute calibration. The spatial resolution of the LiF is also measured (1.19–1.36 μm) and is found to be independent of incident photon energy. Finally, a photometric study is performed in order to assess the feasibility of using these detectors at current X-ray free electron laser and laser facilities worldwide.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.5092265