New BaBrCl:Eu^(2+) phosphors for X-ray image recording  

作　　者：WANG YongSheng MENG XianGuo HE DaWei 

机构地区：[1]Key Laboratory of Luminescence and Optical Information, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China

出　　处：《Chinese Science Bulletin》2009年第20期3639-3642,共4页

基　　金：Supported by the National Outstanding Youth Science Foundation (Grant No.60825407);National Natural Science Fundation of China (Grant No.60877025);Beijing Natural Science Fundation Project (Grant No.2092024);Beijing Science and Technology Committee (Grant No.Z08000303220803)

摘　　要：Photostimulated luminescence(PSL) is observed in BaBrCl:Eu2+ after X-ray irradiation at room temperature.It is suggested by PSL stimulation spectrum and difference absorption spectrum(DAS) that F centers are formed upon X-ray irradiation and both spectra show two bands which are centered at about 550 nm and 675 nm respectively.This enables the use of semiconductor light-emitting diodes(LED) instead of gas lasers for photostimulation.The PSL intensity increases linearly with X-ray irradiation dose increasing,and the conversion efficiency is 29% that for the standard commercial storage phosphor BaFBr:Eu from Fuji imaging plate.Photostimulated luminescence （PSL） is observed in BaBrCl： Eu^2＋after X-ray irradiation at room temperature. It is suggested by PSL stimulation spectrum and difference absorption spectrum （DAS） that F centers are formed upon X-ray irradiation and both spectra show two bands which are centered at about 550 nm and 675 nm respectively. This enables the use of semiconductor light-emitting diodes （LED） instead of gas lasers for photostimulation. The PSL intensity increases linearly with X-ray irradiation dose increasing, and the conversion efficiency is 29% that for the standard commercial storage phosphor BaFBr：Eu from Fuji imaging plate.

关 键 词：X射线照射 荧光粉 影像记录 光激励发光 吸收光谱 铕 气体激光器 发光二极管 

分 类 号：TN104.3[电子电信—物理电子学] X591[环境科学与工程—环境工程]