New photostimulable phosphor materials for digital radiography

Author

Nanto, H. ; Miyazaki, M. ; Imai, A. ; Komori, H. ; Douguchi, Y. ; Kusano, E. ; Kinabar, A.

Volume

47

Issue

4

fYear

2000

fDate

8/1/2000 12:00:00 AM

Firstpage

1620

Lastpage

1624

Abstract

Intense photostimulated luminescence (PSL) is observed, for the first time, in X-ray-irradiated KBr:Eu and KCl_xBr_1-xEu phosphor ceramics. The peak in the stimulation spectrum for the PSL red-shifted with increasing the Br content of KCl_xBr_1-x:Eu phosphor ceramics. The intensity of the PSL with a peak of about 420 nm increases linearly with increasing X-ray irradiation dose over a wide range. The KBr:Eu phosphor exhibites better fading characteristics at room temperature (RT) in the dark, comparing with that of BaFBr:Eu phosphor. The mechanism of fading of the PSL is also discussed

Keywords

biomedical materials; ceramics; diagnostic radiography; phosphors; photoluminescence; potassium compounds; 420 nm; BaFBr:Eu; Intense photostimulated luminescence; KBr:Eu; KCl_xBr_1-xEu; X-ray irradiation dose; digital radiography; fading mechanism; medical diagnostic imaging; photostimulable phosphor materials; Ceramics; Charge carrier processes; Fading; Luminescence; Materials science and technology; Phosphors; Radiography; Temperature; X-ray imaging; X-ray lasers;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.873025

Filename

873025