dc.contributor.author
Vincenti, M. A.
dc.contributor.author
Montereali, R. M.
dc.contributor.author
Nichelatti, E.
dc.contributor.author
Nigro, V.
dc.contributor.author
Piccinini, M.
dc.contributor.author
Koenig, M.
dc.contributor.author
Mabey, Paul
dc.contributor.author
Rigon, G.
dc.contributor.author
Dabrowski, H. J.
dc.contributor.author
Benkadoum, Y.
dc.date.accessioned
2023-07-17T13:36:16Z
dc.date.available
2023-07-17T13:36:16Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/40121
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-39843
dc.description.abstract
Lithium fluoride (LiF) crystals and thin films have been successfully investigated as X-ray imaging detectors based on optical reading of visible photoluminescence emitted by stable radiation-induced F2 and F+3 colour centres. In this work, the visible photoluminescence response of optically-transparent LiF film detectors of three different thicknesses, grown by thermal evaporation on Si(100) substrates and irradiated with monochromatic 7 keV X-rays at several doses in the range between 13 and 4.5 × 103 Gy, was carefully investigated by fluorescence optical microscopy. For all the film thicknesses, the photoluminescence response linearly depends on the irradiation dose in the investigated dose range. The lowest detected dose, delivered to the thinnest LiF film, only 0.5 μm thick, is estimated 13 Gy. Edge-enhancement imaging experiments, conducted by irradiating LiF film detectors at the same energy placing an Au mesh in front of them at a distance of 15 mm, allowed estimating a spatial resolution of (0.38 ± 0.05) μm, which is comparable to the microscope one. This very high spatial resolution in LiF film radiation detectors based on colour centres photoluminescence is combined with the availability of a wide field of view on large areas.
en
dc.format.extent
5 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
Materials for solid-state detectors
en
dc.subject
Solid state detectors
en
dc.subject
X-ray detectors
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::530 Physik::530 Physik
dc.title
Optical characterization of lithium fluoride thin-film imaging detectors for monochromatic hard X-rays
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
C04012
dcterms.bibliographicCitation.doi
10.1088/1748-0221/18/04/C04012
dcterms.bibliographicCitation.journaltitle
Journal of Instrumentation
dcterms.bibliographicCitation.number
4
dcterms.bibliographicCitation.volume
18
dcterms.bibliographicCitation.url
https://doi.org/10.1088/1748-0221/18/04/C04012
refubium.affiliation
Physik
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
1748-0221
refubium.resourceType.provider
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