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Report No.

Evaluation of spatial resolution on ZnS:Ag/10B$$_{2}$$O$$_{3}$$ type scintillation converter for neutron imaging

Yasuda, Ryo; Katagiri, Masaki; Iikura, Hiroshi  ; Sakai, Takuro; Hayashida, Hirotoshi; Sugimoto, Katsumi*; Takenaka, Nobuyuki*; Matsubayashi, Masahito  

Scintillation converter is one of important devices, which determine the spatial resolution in NRG using camera system. We prepared 10B$$_{2}$$O$$_{3}$$ type with different thickness and evaluated the characteristics including spatial resolution. Those scintillators were tested using cooled type CCD camera system at thermal neutron radiography facility (TNRF) in JRR-3. Spatial resolution of those scintillators was evaluated as "half value" by the edge spread function method using knife-edged Gd plate with 0.1mm in thickness. The results show that the spatial resolution of the10B$$_{2}$$O$$_{3}$$ type scintillators is improved with thinning the scintillation layer and is not so different from that of LiF type ones. On the other hand, luminescence intensity of the 10B$$_{2}$$O$$_{3}$$ type scintillators is decreased with thinning the scintillation layer due to the reduction of efficiency of neutron capture and lower than that of LiF type ones.



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