On the response of GdAlO3:Ce powder scintillators

dc.contributor.author	Μιχαήλ, Χρήστος	el
dc.contributor.author	Καλύβας, Νεκτάριος	el
dc.contributor.author	Βαλαής, Ιωάννης	el
dc.contributor.author	Δαυίδ, Στράτος	el
dc.contributor.author	Σεφέρης, Ιωάννης	el
dc.date.accessioned	2015-06-11T01:26:32Z
dc.date.issued	2015-06-11
dc.identifier.uri	http://hdl.handle.net/11400/15679
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.source	www.elsevier.com	en
dc.subject	Ανιχνευτές ακτινοβολίας
dc.subject	Radiation detectors
dc.title	On the response of GdAlO3:Ce powder scintillators	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.contributorName	Τουτουντζής, Ανδριανός	el
heal.contributorName	Καραμπότσος, Α.	el
heal.contributorName	Λιαπαρινός, Παναγιώτης	el
heal.contributorName	Φούντος, Γιώργος	el
heal.contributorName	Κανδαράκης, Ιωάννης	el
heal.identifier.secondary	DOI: 10.1016/j.jlumin.2013.06.041
heal.dateAvailable	10000-01-01
heal.language	en
heal.access	forever
heal.publicationDate	2013
heal.bibliographicCitation	Michail, C., Kalyvas, N., Valais, I., David, S., Seferis, I. et al. (2013) On the response of GdAlO3:Ce powder scintillators. "Journal of Luminescence", 144, p.45-52	en
heal.abstract	The aim of the present study was to investigate the luminescence efficiency (XLE) of gadolinium aluminum perovskite (GdAlO3:Ce) powder scintillator. This powder phosphor, also known as GAP:Ce scintillator, is a non-hygroscopic material, emitting blue light with short decay time. For the purposes of this study, five scintillating screens with coating thicknesses, 14.7, 31.0, 53.7, 67.2 and 121.1 mg/cm2, were prepared in our laboratory from GdAlO3:Ce powder (Phosphor Technology, Ltd) by sedimentation on silica substrates. The light emitted by the phosphors under investigation was evaluated by performing measurements of the absolute luminescence efficiency (AE), X-ray luminescence efficiency and detector quantum gain (DQG) under X-ray exposure conditions with tube voltages ranging from 50 to 140 kV. The quantum detection efficiency (QDE) and energy absorption efficiency (EAE) were also evaluated. The spectral compatibility of GdAlO 3:Ce, with various existing optical detectors, was investigated after emission spectra measurements. A theoretical model, describing radiation and light transfer, was used to fit experimental AE data. This has allowed the estimation of optical attenuation coefficients of the scintillator. GdAlO 3:Ce exhibited higher QDE and EAE values, compared to aluminium perovskite (YAlO3:Ce) but lower absolute efficiency values. Absolute efficiency was found to increase with increasing X-ray tube voltage, although for values higher than 120 kVp a decrease was observed.	en
heal.journalName	Journal of Luminescence	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	false