[9a-S422-1~13] 15.1 バルク結晶成長

▲ [9a-S422-5] 2-inch size Czochralski growth and scintillation properties of Mo co-doped Ce:Gd₃Ga₃Al₂O₁₂ (GAGG)

〇KYOUNGJIN KIM¹、Kei Kamada^2,3、Yasuhiro Shoji^3,1、Masao Yoshino¹、Vladimir V. Kochurikhin³、Akihiro Yamaji¹、Shunsuke Kurosawa^2,4、Yuui Yokota²、Yuji Ohashi²、Akira Yoshikawa^1,2,3 (1.IMR, Tohoku Univ.、2.NICHe, Tohoku Univ.、3.C&A Corp.、4.Yamagata Univ.)

キーワード：Scintillator, Single crystal growth, GAGG

The 2-inch size Ce:GAGG and Mo co-doped Ce:GAGG single crystals were prepared by the Czochralski (Cz) method. Absorption and luminescence spectra were measured together with several other scintillation characteristics, namely the scintillation decay and light yield to reveal the effect of Mo co-doping. Comparing to Ce³⁺ only doped GAGG, Mo co-doped crystal shows a clear improvement in light yield same as previously investigated m-PD grown GAGG samples. Details of large size crystal growth and changes in scintillation properties with Mo co-doping will be discussed.