| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radiation detector capable of suppressing an influence of a clearance between adjacent phase separation structures imposed on a captured image in a flat panel detector formed with a scintillator layer by tiling the phase separation structures having light propagation anisotropy. <P>SOLUTION: The radiation detector comprises a two-dimensional photodetector consisting of multiple pixels; and a scintillator layer formed by two-dimensionally disposing a plurality of scintillator crystalline bodies on a light receiving surface of the two-dimensional photodetector. The scintillator crystalline body comprises two phases which are a first crystal phase formed of a material with a refractive index n<SB POS="POST">1</SB>that forms multiple columnar crystals extending perpendicularly to the light receiving surface of the two-dimensional photodetector, and a second crystal phase formed of a material with a refractive index n<SB POS="POST">2</SB>that is present between the multiple columnar crystals. A material with a refractive index n<SB POS="POST">3</SB>that satisfies n<SB POS="POST">1</SB>≤n<SB POS="POST">3</SB>≤n<SB POS="POST">2</SB>or n<SB POS="POST">2</SB>≤n<SB POS="POST">3</SB>≤n<SB POS="POST">1</SB>is disposed between the adjacent scintillator crystalline bodies. <P>COPYRIGHT: (C)2013,JPO&INPIT |
