[19p-D61-1~18] 2.1 Detection Devices

1:15 PM - 1:30 PM JST(4:15 AM - 4:30 AM UTC)

[19p-D61-2] Response characteristics of Nd-doped Lu₂O₃ near-infrared emitting scintillator
in high dose rate region

〇(PC)Satoshi Ishizawa^1,2, Shunsuke Kurosawa^1,3,4, Akihiro Yamaji^1,3, Akira Yoshikawa^1,3,4,5, Takushi Takata⁶, Hiroki Tanaka⁶ (1.NICHe, Tohoku Univ, 2.JSPS Fellow (PD), 3.IMR, Tohoku Univ., 4.Institute for Laser Eng., Osaka Univ, 5.C&A Corporation, 6.Radiation and Nuclear Science, Kyoto Univ.)

Keywords:

Scintillator (high melting point material),Near infrared emission,High dose rate region

The decommissioning at the Fukushima Daiichi Nuclear Power Plant (1F) is expected to be carried out more efficiently by accurately understanding the dose rate distribution inside the reactor using a remote dosimeter consisting of a scintillator, an optical fiber, and a photodetector. In this study, as part of our ongoing research, we conducted a demonstration test of the remote dosimeter using Nd-doped Lu₂O₃, a super high melting point material with a melting point of 2490°C and an effective atomic number of approximately 69, in a high dose rate field with a ~60 TBq 60Co source. Furthermore, we addressed on developing a response function to simulate the KUR experiment using PHITS.
The results of these studies will be presented in detail in this presentation.