Introduction of two approaches for obtaining superior brightness in neutron imaging

Iikura, Hiroshi  ; Nojima, Takehiro; Yasuda, Ryo; Sakai, Takuro; Matsubayashi, Masahito  

In this time, we introduce two approaches for obtaining superior brightness, the development of a new scintillator and the use of brightness enhancement films (BEF). We evaluated the new ZnS(Ag):Al/Li scintillator developed for neutron imaging. It was confirmed that the brightness increased by about double while maintaining equal performance for the spatial resolution as compared with a conventional scintillator. High frame-rate imaging using a high-speed video camera system and this new scintillator made it possible to image beyond 10000 frames per second while still having enough brightness. Furthermore, we devised a technique to increase the light intensity of reception for a camera by adding BEF on the output surface of the scintillator. It was confirmed that the brightness increased further by about three times.