Optically stimulable transparent KCl:Eu crystal as a storage material for two-dimensional UV-ray or x-ray imaging sensors

Hidehito Nanto; Kazuhiko Murayama; Fumitaka Endo; Yoshiaki Hirai; Shin-ichi Taniguchi; Nozomu Takeuchi

doi:10.1117/12.165189

29 December 1993 Optically stimulable transparent KCl:Eu crystal as a storage material for two-dimensional UV-ray or x-ray imaging sensors

Hidehito Nanto, Kazuhiko Murayama, Fumitaka Endo, Yoshiaki Hirai, Shin-ichi Taniguchi, Nozomu Takeuchi

Author Affiliations +

Proceedings Volume 1987, Recording Systems: High-Resolution Cameras and Recording Devices and Laser Scanning and Recording Systems; (1993) https://doi.org/10.1117/12.165189
Event: Electronic Imaging Device Engineering, 1993, Munich, Germany

Abstract

Intense optically stimulated luminescence (OSL) with a peak at about 420 nm is observed in ultraviolet (UV)-ray or x-ray irradiated europium-doped potassium chloride (KCl:Eu) crystals. The OSL intensity is increased with increasing UV-ray or x-ray irradiation dose. This suggests that KCl:Eu crystal is useful as a material for two-dimensional UV-ray or x-ray imaging sensor utilizing OSL phenomenon. The results obtained are consistent with the proposed emission mechanisms of the 420 nm OSL peak, based on the recombination of electrons released from the F centers with Eu³ ions. The excitation mechanism for the OSL in UV-ray irradiated KCl:Eu crystals is also discussed.

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Hidehito Nanto, Kazuhiko Murayama, Fumitaka Endo, Yoshiaki Hirai, Shin-ichi Taniguchi, and Nozomu Takeuchi "Optically stimulable transparent KCl:Eu crystal as a storage material for two-dimensional UV-ray or x-ray imaging sensors", Proc. SPIE 1987, Recording Systems: High-Resolution Cameras and Recording Devices and Laser Scanning and Recording Systems, (29 December 1993); https://doi.org/10.1117/12.165189

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