High-refractive-index CuI waveguide with aligned cylindrical micropores for high-resolution X-ray imaging

We have fabricated porous CuI crystals and used them as scintillator plates for high-resolution X-ray imaging by combining the properties of high-refractive-index light waveguide and scintillation. Porous CuI crystals containing aligned cylindrical micropores with pore volumes of 6% and 30% were fab...

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Bibliographic Details
Published in:Journal of applied physics 2014-07, Vol.116 (1)
Main Authors: Ohashi, Yoshihiro, Yasui, Nobuhiro, Den, Toru
Format: Article
Language:English
Subjects:
Applied physics
Ceramics industry
Crystals
Directional solidification
High resolution
Image resolution
Leaching
Refractivity
Scintillation counters
Sodium chloride
X ray reflection
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Summary:We have fabricated porous CuI crystals and used them as scintillator plates for high-resolution X-ray imaging by combining the properties of high-refractive-index light waveguide and scintillation. Porous CuI crystals containing aligned cylindrical micropores with pore volumes of 6% and 30% were fabricated by leaching directionally solidified CuI/NaCl and CuI/KCl eutectic crystals. The continuous cylindrical pores, which had a smooth surface, extended inward from the front to the back surface of the CuI crystal; therefore, light is confined in the CuI matrix with high refractive index (n ≈ 2.35) and transported along the pore direction by a total reflection mode. High-resolution X-ray imaging was demonstrated by using a 30% pore volume CuI crystal for an X-ray resolution chart and the 10 lp/mm pattern was clearly resolved.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4887136