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.
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)
