npsm 새물리 New Physics : Sae Mulli

pISSN 0374-4914 eISSN 2289-0041


Research Paper

New Physics: Sae Mulli 2003; 46: 291-296

Published online May 1, 2003

Copyright © New Physics: Sae Mulli.

Photostimulated Luminescence in BaFBr:Eu$^{2+}$, Na$^+$ Imaging Plates

BaFBr:Eu2+, Na+ 영상판의 광자극발광 특성

Chan-Jung KIM1, Sung-Hwan KIM1, Byung-Hwa LEE1, Wan KIM1 and Hee-Dong KANG1, Do-Sung KIM2, Young-Kook KIM3, Hyo-Jin SEO4 and Sih-Hong DOH4*

1Department of Physics, Kyungpook National University, Taegu 702-701
2Department of Physics Education, Taegu University, Kyungsan 713-174
3Department of Physics, Kyungnam University, Masan 631-701
4Department of Physics, Pukyong National University, Pusan 608-737



Imaging plates (IP) were fabricated by using BaFBr:Eu$^{2+}$, Na$^+$ phosphor powders which had been prepared by using a solid phase reaction at 950 ℃ in a hydrogen atmosphere. The photostimulated luminescence (PSL) emission from the imaging plates occurred in the range of 360 ~ 430 nm with a peak at 390 nm. The dose response of the imaging plate was linear within 0.5 mGy ~ 5 Gy. The PSL intensity of the imaging plate faded to approximately 50 % after 120min at room temperature. The pixel density versus thickness of an aluminium step filter showed good linearity. The spatial resolution of the imaging plate evaluated using a Focal Spot Test Tool was about 1.68lp/mm.

Keywords: Photostimulated luminescence, Imaging plate, Phosphor, Radiography, Spatial resolution

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