Luminescence and scintillation characteristics of Gd₃Al₂Ga₃O₁₂:Ce³⁺ scintillators

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• 作者：Ongsa Sakthong ; Weerapong Chewpraditkul ; Chalerm Wanarak ; Jan Pejchal ; Kei Kamada ; Akira Yoshikawa ; Gian Paolo Pazzi ; Martin Nikl
• 关键词：Gd3Al2Ga3O12 ; Ce ; Lu3Al5O12 ; Ce ; Light yield ; Luminescence ; Scintillation detectors
• 刊名：Optical Materials
• 出版年：December, 2013
• 年：2013
• 卷：36
• 期：2
• 页码：568-571
• 全文大小：1236 K

文摘

Cerium-doped Gd₃Al₂Ga₃O₁₂ single crystals were grown by the Czochralski method with 1 at.% cerium. Absorption, luminescence and scintillation characteristics were investigated. The light yield and energy resolution were measured under 662 keV 纬-ray excitation. The characteristic emission band of Ce³⁺ 5d-4f transition peaking around 525 nm was observed in the photoluminescence of Gd₃Al₂Ga₃O₁₂:Ce. The light yield of 56,100 ph/MeV and energy resolution of 6.8% were obtained for a 5 脳 5 脳 1 mm³ Gd₃Al₂Ga₃O₁₂:Ce sample. The light yield dependence on the sample height and on the shaping time was also studied and compared with Lu₃Al₅O₁₂:Ce crystal.