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Report No.
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Development of high spatial resolution devices for neutron radiography in TNRF

Yasuda, Ryo; Hayashida, Hirotoshi; Iikura, Hiroshi  ; Sakai, Takuro; Matsubayashi, Masahito  

Neutron radiography is expected as an effective diagnostic tool of water distribution in membrane electrode assembly below 0.1mm in thickness in fuel cells. Since specification of collimator ration (L/D) and camera- lens system equipped with TNRF was not enough to obtain an image with good spatial resolution, we developed a small aperture collimator system to improve L/D and a lens - camera system for viewing local area. Results of characteristic tests show that image was getting clear with increasing with L/D and the performance of the small aperture collimator system was demonstrated. In case of local area viewing system, an image with 4 by 4 micro-meter in pixel size could be obtained.

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