Optically stimulated luminescence in Cu-doped sodium chloride single crystal for a high-quality X-ray imaging sensor

✍ Scribed by H. Nanto; T. Usuda; H. Sokooshi; S. Nakamura; K. Inabe; N. Takeuchi

• Book ID: 103960896
• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 422 KB
• Volume: 10
• Category: Article
• ISSN: 0925-4005
• DOI: 10.1016/0925-4005(93)87006-b

✦ Synopsis

An intense optically stimulated luminescence (OSL) has been observed, for the first time, in X-irradiated copper-doped sodium chloride (NaCl:Cu) single crystals. The intensity of the OSL peak at 353 nm is proportional to the optical density of the F centres that are created by X-ray irradiation. This suggests that NaCI:Cu is useful as a material for a two-dimensional X-ray imaging sensor in computed radiography utilizing the OSL phenomenon. A possible reaction responsible for the 353 nm OSL peak is also proposed, based on the recombination of CL?' ions with electrons released from the F centres.