Scintillation Properties of Praseodymium Doped LuAG Scintillator Compared to Cerium Doped LuAG, LSO and

Properties of praseodymium and cerium doped Lutetium Aluminum Garnet (LuAG) were compared with cerium doped Lutetium Oxyorthosilicate (LSO) and Lanthanum Bromide (LaBr 3 ). Light yield, its non-proportionality relative to 662 keV gamma -rays and the dependence of the energy resolution on energy of t...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 2009-08, Vol.56 (4), p.2499-2505
Main Authors: Swiderski, L., Moszynski, M., Nassalski, A., Syntfeld-Kazuch, A., Szczesniak, T., Kamada, K., Tsutsumi, K., Usuki, Y., Yanagida, T., Yoshikawa, A., Chewpraditkul, W., Pomorski, M.
Format: Article
Language:English
Subjects:
Aluminum
Cerium
Crystals
Decay time constant
Energy measurement
Energy resolution
Garnets
Lanthanum
LSO
LuAG
non-proportionality
Pulse measurements
Shape measurement
Time measurement
time resolution
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Summary:Properties of praseodymium and cerium doped Lutetium Aluminum Garnet (LuAG) were compared with cerium doped Lutetium Oxyorthosilicate (LSO) and Lanthanum Bromide (LaBr 3 ). Light yield, its non-proportionality relative to 662 keV gamma -rays and the dependence of the energy resolution on energy of the detected gamma -rays were measured. LuAG:Pr turned out to have good proportionality, with deviation from unity around 10% at 16.6 keV and 3% at 59.5 keV. This, together with relatively high light yield of 5600 phe/MeV results in a very good energy resolution of LuAG:Pr of 5.1% measured with 662 keV gamma-rays. The measured time resolution of 308 ps is significantly larger than that of 166 ps obtained for LSO:Ce. This can be explained by smaller light yield of LuAG:Pr and the fact that only about 25% of its scintillation is emitted in short decay time modes of 17.6 ns and 52 ns, while the rest is decaying with long time modes of 1.4 mus and 9 mus.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2009.2025040