[16p-B410-1~8] 13.8 Optical properties and light-emitting devices

[16p-B410-1] Emission Properties of La₂Hf₂O₇ doped with Yb as a NIR-emitting Oxide Scintillator for the Remote Dosimetry System

〇(PC)Satoshi Ishizawa¹, Shunsuke Kurosawa^1,2,3, Kurashima Yutaro¹, Akihiro Yamaji^1,2, Akira Yoshikawa^1,2,3,4, Takushi Takata⁵, Hiroki Tanaka⁵ (1.IMR, Tohoku Univ., 2.NICHe, Tohoku Univ, 3.ILE Osaka Univ., Osaka Univ., 4.C&A Corporation, 5.KURNS, Kyoto Univ.)

Keywords:Near-Infrared-Emitting Oxide Scintillator, rare earth element

We developed La₂Hf₂O₇ doped with Yb (Yb:LHO) crystal as near-infrared emitting oxide scintillator by Core heating method. Stopping power of Yb:LHO for γ-rays is superior to that of existing scintillator elements for remote dosimetry system used in high dose rate region, e.g. decommissioning of nuclear power plant. In this talk, we will report the results of investigation for Yb:LHO scintillator, including its composition and emission properties.