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Development of micro-structured fluorescent plates for high-resolution imaging

高解像イメージングのための微細構造を有する蛍光板の開発

酒井 卓郎; 安田 良; 飯倉 寛; 松林 政仁

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

We have developed novel fluorescent plates for high-resolution imaging. The devices consist of capillary plates and fine phosphor grains, namely each capillary is filled with the grains. We used the capillary plates (HAMAMATSU, J5112-25D25U1TB) as substrates. The thickness of the plate is 1 mm and the diameter of each hole is 25 $$mu$$m. The phosphor grains are sifted silver-activated zinc sulfide (ZnS:Ag). The mean particle size is approximately 7 $$mu$$m. The fabricated fluorescent plates are observed using an optical microscope and a scanning electron microscope. The observation results show that all capillaries are filled with grains very well. The imaging experiment is performed using a small X-ray source. The results show that the fluorescent plates are expected to be compatible with both spatial resolution and detection efficiency.

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