2 inch diameter single crystal growth and scintillation properties of Ce:Gd₃Al₂Ga₃O₁₂

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• 作者：Kei Kamada ; Takayuki Yanagida ; Takanori Endo ; Kousuke Tsutumi ; Yoshiyuki Usuki ; Martin Nikl ; Yutaka Fujimoto ; Akihiro Fukabori ; Akira Yoshikawa
• 关键词：A2. Czochralski method ; B1. Oxides ; B2. Scintillator materials ; B3. Scintillators
• 刊名：Journal of Crystal Growth
• 出版年：2012
• 出版时间：1 August, 2012
• 年：2012
• 卷：352
• 期：1
• 页码：88-90
• 全文大小：328 K

文摘

2inch size Ce:Gd₃Al₂Ga₃O₁₂ (Ce:GAGG) single crystals were grown by the Czochralski (Cz) method using [100] oriented seed. The crystals were up to 120 mm in length and 50 mm in diameter were achieved and had no cracks. Luminescence and scintillation properties were measured. In order to determine light yield, the energy spectra were collected under 662 keV ¦Ã-ray excitation (¹³⁷Cs source) were detected by a with avalanche photodiode (APD) S8664-55(Hamamatsu).The light yield of CeGAGG sample was calibrated from ⁵⁵Fe direct irradiation peak to APD. The light yield was around 46,000 photon/MeV. Energy resolution was 4.9 % @662 keV for 5¡Á5¡Á1 mm sample. The theoretical density of CeGAGG is 6.63 g/cm³.