Studying the luminescence efficiency of Lu 2O 3

dc.contributor.author	Καλύβας, Νεκτάριος Ι.	el
dc.contributor.author	Λιαπαρίνος, Παναγιώτης Φ.	el
dc.contributor.author	Μιχαήλ, Χρήστος Μ.	el
dc.contributor.author	Δαυίδ, Στράτος Λ.	el
dc.contributor.author	Φούντος, Γεώργιος Π.	el
dc.date.accessioned	2015-06-06T18:06:15Z
dc.date.available	2015-06-06T18:06:15Z
dc.date.issued	2015-06-06
dc.identifier.uri	http://hdl.handle.net/11400/15355
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://link.springer.com/journal/339	en
dc.subject	Optical photon
dc.subject	Absolute efciency
dc.subject	Incident x-ray energy
dc.subject	Lutetium oxide
dc.subject	Incident exposure
dc.subject	Phosphor particle
dc.subject	Mass Absorption Coefcient
dc.subject	Inverse Diffusion
dc.subject	Radiation Transfer
dc.subject	Light Yield
dc.subject	Ray Excitation
dc.subject	Conversion Efciency
dc.subject	Energy Uence
dc.subject	Luminescence Efciency
dc.subject	Optical Sensor
dc.subject	Οπτικό φωτόνιο
dc.subject	Απόλυτη απόδοση
dc.subject	Περιστατικό ενέργειας ακτίνων X
dc.subject	Οξείδιο λουτετσίου
dc.subject	Έκθεση Περιστατικών
dc.subject	Σωματίδια φωσφόρου
dc.subject	Μαζικός συντελεστής απορρόφησης
dc.subject	Αντίστροφη διάχυση
dc.subject	Μεταφορά ακτινοβολίας
dc.subject	Απόδοση φωτός
dc.subject	Διέγερση ακτίνων
dc.subject	Απόδοση μετατροπής
dc.subject	Ενέργεια uence
dc.subject	Αποδοτικότητα φωταύγειας
dc.title	Studying the luminescence efficiency of Lu 2O 3	en
heal.type	journalArticle
heal.secondaryTitle	eu nanophosphor material for digital X-ray imaging applications	en
heal.classification	Medicine
heal.classification	Technology
heal.classification	Ιατρική
heal.classification	Τεχνολογία
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh00006614
heal.classificationURI	http://zbw.eu/stw/descriptor/10470-6
heal.classificationURI	N/A-Ιατρική
heal.classificationURI	N/A-Τεχνολογία
heal.contributorName	Wójtowicz, Marcin	en
heal.contributorName	Zych, Eugeniusz	en
heal.contributorName	Κανδαράκης, Ιωάννης Σ.	el
heal.identifier.secondary	DOI: 10.1007/s00339-011-6640-5
heal.language	en
heal.access	campus
heal.recordProvider	Σχολή Τεχνολογικών Εφαρμογών. Τμήμα Μηχανικών Βιοϊατρικής Τεχνολογίας Τ.Ε.	el
heal.publicationDate	2012-01
heal.bibliographicCitation	Kalyvas, N., Liaparinos, P., Michail, C., David, S., Fountos, G., et al. (2012) Studying the luminescence efficiency of Lu 2O 3:eu nanophosphor material for digital X-ray imaging applications. "Applied Physics A", 106 (1), p. 131-136. Available from: http://link.springer.com/article/10.1007%2Fs00339-011-6640-5 [Accessed: 06/06/2015].	en
heal.abstract	Scintillator materials are widely used in X-ray medical imaging detector applications, coupled with available photoreceptors like radiographic film or photoreceptors suitable for digital imaging like a-Si, charge-coupled devises (CCD), complementary metal-oxide-semiconductors (CMOS) and GaAs). In addition, scintillators can be utilized in non-medical imaging detectors such as industrial detectors for non-destructive testing (NDT) and detectors used for security purposes (i.e. airport luggage control). Image quality and dose burden in the above applications is associated with the amount of optical photons escaping the scintillator as well as the amount of optical photons captured by the photoreceptor. The former is characterized by the scintillator efficiency and the latter by the spectral matching between the emission spectrum of the scintillator and the spectral response of the photoreceptor. Recently, a scintillator material, europium-activated lutetium oxide (Lu 2O 3:Eu), has shown improved scintillating properties. Lu 2O 3:Eu samples of compact nanocrystalline non-agglomerated powder were developed in our laboratory using homogeneous precipitation from a water-toluene solution in the presence of polyvinyl alcohol as a surfactant. In order to test their light-emission properties, experimental measurements under the excitation of X-ray spectra with X-ray tube voltages between 50 kVp and 140 kVp were performed. This range of applied voltages is appropriate for X-ray radiology, NDT and security applications. Lu 2O 3:Eu was evaluated with respect to output yield and spectral compatibility of digital imaging photoreceptors (CCD-based, CMOS-based, amorphous silicon a:Si flat panels, ES20 and GaAs). High light yield and spectral compatibility increase the performance of the medical detector and reduce the dose burden to the personnel involved. In addition a theoretical model was used to determine the values for the Lu 2O 3:Eu optical photon light propagation parameters. The inverse diffusion length was found to be equal to 33 cm 2/g. In addition Lu 2O 3:Eu was found to match well with several photoreceptors capable of digital imaging (i.e. GaAs).	en
heal.publisher	Stuke, Michael	en
heal.journalName	Applied Physics A	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true