Investigation of luminescence properties of Lu2SiO5:Ce (LSO) powder scintillator in the x-ray radiography energy range

dc.contributor.author	Δαυίδ, Στράτος Λ.	el
dc.contributor.author	Μιχαήλ, Χρήστος Μ.	el
dc.contributor.author	Βαλαής, Ιωάννης Γ.	el
dc.contributor.author	Τουτουντζής, Ανδριανός Ε.	el
dc.contributor.author	Λιαπαρίνος, Παναγιώτης Φ.	el
dc.date.accessioned	2015-01-23T14:09:15Z
dc.date.available	2015-01-23T14:09:15Z
dc.date.issued	2015-01-23
dc.identifier.uri	http://hdl.handle.net/11400/4609
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.subject	X-ray detection
dc.subject	Cerium
dc.subject	Ανίχνευση ακτίνων Χ
dc.subject	Δημήτριο
dc.title	Investigation of luminescence properties of Lu2SiO5:Ce (LSO) powder scintillator in the x-ray radiography energy range	en
heal.type	journalArticle
heal.classification	Medicine
heal.classification	Physics
heal.classification	Ιατρική
heal.classification	Φυσική
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh00006614
heal.classificationURI	http://skos.um.es/unescothes/C02994
heal.classificationURI	N/A-Ιατρική
heal.classificationURI	N/A-Φυσική
heal.keywordURI	http://id.loc.gov/authorities/subjects/sh85022138
heal.contributorName	Κάβουρας, Διονύσης Α.	el
heal.contributorName	Κανδαράκης, Ιωάννης Σ.	el
heal.contributorName	Παναγιωτάκης, Γεώργιος Σ.	el
heal.identifier.secondary	DOI: 10.1109/TNS.2008.2006901
heal.language	en
heal.access	campus
heal.recordProvider	Τ.Ε.Ι. Αθήνας. Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	2008
heal.bibliographicCitation	David, S., Michail, C., Valais, I., Toutountzis, A., Liaparinos, P., et al. (December 2008). Investigation of luminescence properties of Lu2SiO5:Ce (LSO) powder scintillator in the x-ray radiography energy range. Transactions on Nuclear Science. 55(6). pp. 3684 - 3691. IEEE.	en
heal.abstract	This paper investigates the light emission efficiency of Lu2SiO5:Ce (LSO) powder scintillator under conditions employed in projection X-ray imaging. Although single-crystal LSO has been thoroughly studied in medical imaging energies, the efficiency of powder LSO has not been previously investigated experimentally under X-ray medical radiography conditions. For this purpose, three scintillating screens with a coating thickness of 63.4, 108.4, and 172.5 mg/cm2 were prepared by sedimentation of LSO powder. Measurements of luminescence efficiency (emitted light energy flux over incident X-ray energy flux) were performed in the radiographic X-ray tube voltages range (40-140 kVp). Parameters related to X-ray detection, i.e., quantum detection efficiency, energy absorption efficiency and probability of K-fluorescence reabsorption were calculated. A theoretical model, describing radiation and light transfer, was employed to fit luminescence experimental data and to estimate values of the intrinsic conversion efficiency and of the light attenuation coefficients of the scintillating screens. The spectral compatibility of the LSO powder scintillator to various optical detectors used in digital radiography was also determined by performing light emission spectrum measurements and by taking into account the spectral sensitivity of electronic optical detectors. Maximum values of LSO luminescence efficiency were observed within the range from 40 to 60 kVp. The 172.5 mg/cm2 thick screen was found more efficient than the two thinner screens examined in our experiments. The intrinsic conversion efficiency of LSO (0.10) was found close to that of currently employed phosphors. Spectral compatibility data of LSO screens indicates that LSO may be efficiently coupled to optical detectors used in digital radiography imaging systems.	en
heal.sponsor	IEEE Nuclear and Plasma Sciences Society	en
heal.publisher	IEEE	en
heal.journalName	Transactions on Nuclear Science	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true