Comparative Study of GdLu2Al2Ga3O12:Ce and GdY2Al2Ga3O12:Ce Scintillation Crystals for γ -Ray Detection

O. Sakthong, W. R. Chewpraditkul, W. Chewpraditkul, T. Szczesniak, L. Swiderski, M. Moszynski, K. Kamada, A. Yoshikawa, M. Nikl

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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.

Original languageEnglish
Article number8302608
Pages (from-to)2081-2084
Number of pages4
JournalIEEE Transactions on Nuclear Science
Issue number8
Publication statusPublished - 2018 Aug


  • Coincidence time resolution
  • GdLuAlGaO:Ce
  • GdYlGaO:Ce
  • energy resolution
  • light yield (LY)
  • scintillation decay


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