17-19 October 2018
Laboratori Nazionali di Frascati INFN
Europe/Rome timezone

Radiation-induced photoluminescent point defects in lithium fluoride for versatile X-ray imaging detectors

18 Oct 2018, 17:00
30m
Aula Salvini (Laboratori Nazionali di Frascati INFN)

Aula Salvini

Laboratori Nazionali di Frascati INFN

Via E. Fermi 40 00044 Frascati (RM)

Speaker

Dr Francesca Bonfigli (ENEA C.R. Frascati, Fusion and Technologies for Nuclear Safety and Security Dep., Photonics Micro- and Nano-structures Laboratory, FSN-TECFIS-MNF,V. E. Fermi, 45, 00044 Frascati (Rome), Italy)

Description

Microscopy imaging detectors play a crucial role in the field of X-ray technologies. The research and development of new advanced detectors is fundamental in order to overcome some of the limits of the standard ones. Solid-state X-ray imaging detectors based on visible photoluminescence from aggregated electronic defects, known as colour centres (CCs), locally produced in lithium fluoride (LiF) crystals and thin films will be discussed. Their peculiar features, such as a very high spatial resolution over a large field of view, wide dynamic range, versatility and simplicity of use combined with the sensitivity of the optical fluorescence reading technique, make LiF-based detectors very attractive for several X-ray imaging applications. In this work, we show the results of X-ray imaging experiments performed by using LiF detectors for (a) a laboratory X-ray source combined with polycapillary optics in contact mode configuration and (b) a synchrotron facility in diffraction-mode configuration. The achieved results confirm that LiF-based detectors are powerful and versatile tools for X-ray imaging.

Primary author

Dr Francesca Bonfigli (ENEA C.R. Frascati, Fusion and Technologies for Nuclear Safety and Security Dep., Photonics Micro- and Nano-structures Laboratory, FSN-TECFIS-MNF,V. E. Fermi, 45, 00044 Frascati (Rome), Italy)

Co-authors

Dr Angelica Cecilia (Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany) Dr Dariush Hampai (INFN - LNF, V. E. Fermi 40, 00044 Frascati, Italy) Dr Enrico Nichelatti (ENEA C.R.Casaccia, Fusion and Technologies for Safety and Security Department, Photonics Micro-and Nano-structures Laboratory, FSN-TECFIS-MNF, V. Anguillarese 301, 00123 S.Maria di Galeria, Rome, Italy) Dr Maria Aurora Vincenti (ENEA C.R. Frascati, Fusion and Technologies for Nuclear Safety and Security Dep., Photonics Micro- and Nano-structures Laboratory, FSN-TECFIS-MNF,V. E. Fermi, 45, 00044 Frascati (Rome), Italy) Dr Patrik Vagovič (Center for Free-Electron Laser Science (CFEL), Deutsches Elektronen-Synchrotron (DESY), Notkestrasse 85, Bldg.99, 22607 Hamburg, Germany) Dr Rosa Maria Montereali (ENEA C.R. Frascati, Fusion and Technologies for Nuclear Safety and Security Dep., Photonics Micro- and Nano-structures Laboratory, FSN-TECFIS-MNF,V. E. Fermi, 45, 00044 Frascati (Rome), Italy) Prof. Sultan Dabagov (INFN - LNF, V. E. Fermi 40, 00044 Frascati, Italy- RAS PN Lebedev Physical Institute, Leninsky pr. 53, 119991 Moscow, Russia-NR Nuclear University MEPhI, Kashirskoe sh. 31, 115409 Moscow, Russia) Prof. Tilo Baumbach (Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany)

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