[20a-A102-1~11] 2.1 Detection Devices

△ [20a-A102-7] Luminescence Properties of Novel Red-emitting Li₂Hf(Br, I)₆ Scintillators for Both Neutron and Gamma-ray Detection

〇Chihaya Fujiwara^1,2, Shunsuke Kurosawa^2,3,4, Akihiro Yamaji^2,3, Yuji Ohashi^2,3, Yuui Yokota², Kei Kamada^2,3,5, Hiroki Sato^2,3, Satoshi Toyoda^2,3, Masao Yoshino^2,3, Rikito Murakami², Takahiko Horiai^2,3, Takashi Hanada², Akira Yoshikawa^2,5 (1.Department of Mat. Sci., Graduate School of Eng., Tohoku Univ., 2.IMR, Tohoku Univ, 3.NICHe, Tohoku Univ., 4.Institute for Laser Eng., Osaka Univ., 5.C&A Corporation)

Keywords:Red Emitted Scintillator, Neutron Scintillator, Scintillation Detector

In order to achieve nuclear power plant decommissioning, we are developing a radiation detector that can operate in a high dose rate field, consisting of a scintillator and an optical fiber. The scintillator must be sensitive to neutrons and gamma rays that are expected to exist inside the reactor, and must emit red light with high transmission efficiency in the optical fiber. We have developed Li₂Hf(Br,I)₆ for this purpose. In this talk, we will discuss the luminescence and scintillation properties of Li₂Hf(Br,I)₆.