Comparative Study of GdLu2Al2Ga3O12:Ce and GdY2Al2Ga3O12:Ce Scintillation Crystals for γ -Ray Detection
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Author list: Sakthong O., Chewpraditkul W.R., Chewpraditkul W., Szczesniak T., Swiderski L., Moszynski M., Kamada K., Yoshikawa A., Nikl M.
Publisher: Institute of Electrical and Electronics Engineers
Publication year: 2018
Journal: IEEE Transactions on Nuclear Science (0018-9499)
Volume number: 65
Issue number: 8
Start page: 2081
End page: 2084
Number of pages: 4
ISSN: 0018-9499
eISSN: 1558-1578
Languages: English-Great Britain (EN-GB)
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Abstract
The scintillation characteristics of Czochralski-grown GdLu2Al2Ga3O12:Ce and GdY2Al2Ga3O12:Ce single crystals were compared for γ -ray detection. At 662-keV γ -rays, light yield (LY) of 30700 photons/MeV obtained for GdLu2Al2Ga3O12:Ce is higher than that of 27200 photons/MeV obtained for GdY2Al2Ga3O12:Ce, while its energy resolution is inferior (14% versus 10.6%) due to a larger nonproportionality of LY. Scintillation decays were measured using the time-correlated single photon counting technique. A fast component decay time of 48 ns with relative intensity of 71% obtained for GdLu2Al2Ga3O12:Ce is superior to that of 106 ns (57%) for GdY2Al2Ga3O12:Ce. The coincidence time spectrum was measured in reference to a fast BaF2 scintillator, and coincidence time resolution was discussed. © 1963-2012 IEEE.
Keywords
GdLu2Al2Ga3O12:Ce, GdY2l2Ga3O12:Ce, light yield (LY)
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