NDLI: Ytterbium-based compounds as fast and dense inorganic scintillators

Content Provider	IEEE Xplore Digital Library
Author	Chipaux, R. Cribier, M. Dujardin, C. Garnier, N. Guerassimova, N. Mallet, J. Meyer, J.-P. Pedrini, C. Petrosyan, A.G.
Copyright Year	2002
Description	Author affiliation: Dept. de Phys. Nucl., CEA, Centre d'Etudes Nucleaires de Saclay, Gif-sur-Yvette, France (Chipaux, R.; Cribier, M.)
Abstract	The recent observation of UV scintillation in mixed yttrium/ytterbium aluminium garnets opened the field of investigation to a new class of scintillating crystals. Their interesting luminescence properties make them very attractive not only for solar neutrino spectroscopy as ytterbium containing detector material, but also for radiation detection in general, as dense, fast and efficient scintillators. Studies of charge transfer luminescence and quenching mechanisms in single crystals of the garnet system (Y-Yb)/sub 3/Al/sub 3/O/sub 5/ are reported. Fluorescence intensity and decay time under X-ray and VUV excitations decrease at low temperatures (T/spl sim/100 K) and demonstrate the important role played by the traps. The fluorescence intensity and decay time are also dependent on Yb/sup 3+/ concentration and the presence of Yb/sup 2+/. The results trace major directions to get optimized scintillators in terms of their efficiency and lifetime. X-ray luminescence has also been found in gallium garnets (Y-Yb)/sub 3/Ga/sub 3/O/sub 5/ and the perovskites (Y-Yb)AlO/sub 3/ and LaYbO/sub 3/ in the form of single crystals and/or powders. More specific properties required by neutrino spectroscopy, such as radioactive background, pulse shape, false signatures, alpha/gamma discrimination, are also addressed.
Starting Page	966
Ending Page	970
File Size	414902
Page Count	5
File Format	PDF
ISBN	0780373243
ISSN	10823654
DOI	10.1109/NSSMIC.2001.1009715
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-11-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Garnets Crystals Luminescence Ytterbium Neutrino sources Spectroscopy Radiation detectors Fluorescence Yttrium Aluminum
Content Type	Text
Resource Type	Article

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