Evaluation of the new Li-scintillator used thermal neutron radiography and the optional brightness-up sheet

Iikura, Hiroshi  ; Tsutsui, Noriaki*; Nakamura, Tatsuya  ; Katagiri, Masaki*; Kureta, Masatoshi   ; Kubo, Jun*; Matsubayashi, Masahito  

Japan Atomic Energy Agency has developed the neutron scintillator jointly with Chichibu Fuji Co., Ltd. In this study, we evaluated the new LiF/ZnS scintillator developed for neutron imaging. It was confirmed that brightness becomes light about 3 times while maintaining the equal performance for the spatial resolution compared with the conventional product. When high frame rate imaging was performed using high-speed-imaging system and this scintillator, it became possible to image beyond 10,000 frames per second while having enough brightness. This technique enabled us to get real-time imaging of behavior of oil in automobile engine accurately.