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Confocal fluorescence microscopy and confocal raman microspectroscopy of X-ray irradiated LIF crystals

Bonfigli, Francesca; Botti, Sabina; Cecilia, Angelica; Montereali, Rosa Maria; Nichelatti, Enrico; Nigro, Valentina; Piccinini, Massimo; Vincenti, Maria Aurora


Radiation-induced color centers locally produced in lithium fluoride (LiF) are successfully used for radiation detectors. LiF detectors for extreme ultraviolet radiation, soft and hard X-rays, based on photoluminescence from aggregate electronic defects, are currently under development for imaging applications with laboratory radiation sources, as well as large-scale facilities. Among the peculiarities of LiF-based detectors, noteworthy ones are their very high intrinsic spatial resolution across a large field of view, wide dynamic range, and versatility. LiF crystals irradiated with a monochromatic 8 keV X-ray beam at KIT synchrotron light source (Karlsruhe, Germany) and with the broadband white beam spectrum of the synchrotron bending magnet have been investigated by optical spectroscopy, laser scanning confocal microscopy in fluorescence mode, and confocal Raman micro-spectroscopy. The 3D reconstruction of the distributions of the color centers induced by the X-rays has been performed with both confocal techniques. The combination of the LiF crystal capability to register volumetric X-ray mapping with the optical sectioning operations of the confocal techniques has allowed performing 3D reconstructions of the X-ray colored volumes and it could provide advanced tools for 3D X-ray detection.

Verlagsausgabe §
DOI: 10.5445/IR/1000140887
Veröffentlicht am 08.12.2021
DOI: 10.3390/condmat6040037
Zitationen: 2
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Photonenforschung und Synchrotronstrahlung (IPS)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2410-3896
KITopen-ID: 1000140887
HGF-Programm 56.13.11 (POF IV, LK 01) Building Blocks of Life: Structure and Function
Erschienen in Condensed Matter
Verlag MDPI
Band 6
Heft 4
Seiten 37
Schlagwörter radiation detectors; color centers; lithium fluoride; confocal fluorescence microscopy; Raman confocal micro-spectroscopy
Nachgewiesen in Dimensions
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