Light emission efficiency of GdAlO3:Ce (GAP:Ce) powder screens under X-ray radiography conditions

dc.contributor.author	Τουτουντζής, Ανδριανός Ε.	el
dc.contributor.author	Μιχαήλ, Χρήστος Μ.	el
dc.contributor.author	Βαλαής, Ιωάννης Γ.	el
dc.contributor.author	Δαυίδ, Στράτος Λ.	el
dc.contributor.author	Καλύβας, Νεκτάριος Ι.	el
dc.date.accessioned	2015-01-28T20:56:53Z
dc.date.available	2015-01-28T20:56:53Z
dc.date.issued	2015-01-28
dc.identifier.uri	http://hdl.handle.net/11400/4980
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	http://e-jst.teiath.gr/	en
dc.subject	Powder phosphor
dc.subject	Σκόνη φωσφόρου
dc.subject	Inorganic Scintillators
dc.subject	QDE
dc.subject	EAE
dc.subject	Radiation detectors
dc.subject	GdAlO3:Ce
dc.subject	Ανόργανοι Σπινθηριστές
dc.subject	Ανιχνευτές ακτινοβολίας
dc.title	Light emission efficiency of GdAlO3:Ce (GAP:Ce) powder screens under X-ray radiography conditions	en
heal.type	journalArticle
heal.classification	Science
heal.classification	Physics
heal.classification	Επιστήμες
heal.classification	Φυσική
heal.classificationURI	http://zbw.eu/stw/descriptor/15685-2
heal.classificationURI	http://zbw.eu/stw/descriptor/15669-0
heal.classificationURI	N/A-Επιστήμες
heal.classificationURI	N/A-Φυσική
heal.contributorName	Λιαπαρίνος, Παναγιώτης Φ.	el
heal.contributorName	Κανδαράκης, Ιωάννης Σ.	el
heal.language	en
heal.access	free
heal.publicationDate	2009
heal.bibliographicCitation	Toutountzis, A.E., Michail, C.M., Valais, I.G., David, S.L., Kalyvas, N.I., et al. (2009). Light emission efficiency of GdAlO3:Ce (GAP:Ce) powder screens under X-ray radiography conditions. "e-Journal of Science & Technology". [Online] 4(3): 23-29. Available from: http://e-jst.teiath.gr/	en
heal.abstract	Abstract. The aim of this study was to evaluate the performance of GdAlO3:Ce powder scintillator screens for use in medical imaging applications. This powder phosphor, also known as GAP:Ce scintillator, is a non-hygroscopic material, emitting blue light with short decay time and it has never been used in medical imaging. Various scintillator screens with coating thickness, ranging from 14.7 to 121.1 mg/cm2, were prepared in our laboratory from GdAlO3:Ce powder (Phosphor Technology, Ltd) by sedimentation on silica substrates. The Quantum Detection Efficiency (QDE) and Energy Absorption Efficiency (EAE) were evaluated. Absolute luminescence efficiency measurements were performed under exposure conditions employed in diagnostic radiology (50-140 kV, 63 mAs), using an experimental setup based on a photomultiplier tube. The emission spectrum of GAP:Ce, after calculating the matching factor, was found compatible with various existing optical detectors. QDE and EAE of GAP, comparing to YAP has exhibited higher values. Absolute Efficiency values were found to increase with increasing X-ray tube voltage. Although for values higher than 120 kVp a decrease was observed.	en
heal.publisher	Νερατζής, Ηλίας	el
heal.publisher	Σιανούδης, Ιωάννης	el
heal.journalName	e-Journal of Science & Technology	en
heal.journalName	e-Περιοδικό Επιστήμης & Τεχνολογίας	el
heal.journalType	peer-reviewed
heal.fullTextAvailability	true