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Synthesis and characterization of some PSL phosphors

1989; Elsevier BV; Volume: 148; Issue: 1-2 Linguagem: Inglês

10.1016/0022-5088(89)90035-0

1878-2728

Shahzad I. Mian, Yanji Wang, Wei-Zhao, Zengfu Song,

Radiation Detection and Scintillator Technologies

Some rare earth dopant photostimulated luminescence (PSL) phosphors (BaFBr:Eu2+, BaF1.05Br0.95:Eu2+, BaFCl:Eu2+, LaOBr:Tb and Ca9Ca-(PO4)6Cl2:Eu2+) have been synthesized. To evaluate whether these materials could be used for an image-storage plate for a computerized radiological system, we have specified and characterized some of their properties: PSL emission spectrum, stimulation spectrum, linearity of X-ray dose/PSL response, photostimulability, stability of the stored F-centres, dynamics of the PSL process, durability in long-run X-irradiation and stimulation, etc. These properties would affect the quality of image and the efficiency of the computerized system. They are also necessary parameters for the design of the optical, mechanical and electronic devices of the whole computerized radiological system.