[20p-224B-1~8] 2.1 Radiation physics and Detector fundamentals

[20p-224B-2] [Ionization Radiation Award Speech] Development of Novel Fluoride Neutron Scintillators

〇Noriaki Kawaguchi¹, Go Okada¹, Yoshisuke Futami², Kentaro Fukuda³, Takayuki Yanagida¹ (1.NAIST, 2.Kumamoto College, 3.Tokuyama Corp.)

Keywords:scintillator, neutron, crystal

We have studied novel fluoride neutron scintillators since around 2008, including Ce-doped LiCaAlF₆ (LiCAF) single crystal, Eu-doped LiCAF single crystal, 3d transition metal-doped LiCAF single crystal, LiF/CaF₂ eutectics, LiF: W, LiF-CeF₃ complex fluoride ceramics, and Tb-doped LiCaAlF₆. The neutron scintillator emits light by the neutron capture reaction of ⁶Li. The fluoride materials have an advantage that their lithium compounds are non-hygroscopic. Fluoride neutron scintillator is excellent in processability and it can be applied to neutron imaging test. In this presentation, we summarize the research results so far and also describe the future prospects.