[18a-E207-1~10] 15.1 Bulk crystal growth

[18a-E207-3] Phase diagram of BaI₂-LuI₃ system and growth of BaI₂/LuI₃ eutectic scintillator

〇(M2)Kazuya Origuchi¹, Yuui Yokota², Masao Yoshino¹, Akihiro Yamaji¹, Satoshi Toyoda², Hiroki Sato², Yuji Ohashi², Shunsuke Kurosawa², Kei Kamada^2,3, Akira Yoshikawa^1,2,3 (1.IMR, Tohoku Univ., 2.NICHe, Tohoku Univ., 3.C&A)

Keywords:scintillator, eutectic scintillator

Chloride, bromide, and iodide halide single crystals are known to exhibit high light yields and high energy resolution due to their narrow bandwidth, but halide materials are often high hygroscopic materials,and there are very few reports of phase diagrams. Also, very few phase diagrams of the rare earth-alkaline earth halides systems have been reported. Then, we focused on the BaI₂-LuI₃ systems and prepare for the phase diagrams,and crystal growth was attempted at the eutectic point in the phase diagram.