Creation Of Storage Centers In Csbr:Eu2+ Needle Image Plates By Vacuum Ultraviolet Radiation

In this study, the photostimulated luminescence of the CsBr:Eu2+ needle image plates (NIPS) after vacuum ultraviolet (VUV) irradiation and their photoluminescence under VUV and UV excitation were investigated. It was shown that the photostimulable storage centers arise almost exclusively due to irradiation of the CsBr:Eu NIPs in the spectral lines of creation of the 4p(5)5s anion excitons, and not in the region of interband transitions of CsBr. The explanation of the results is based mainly on the radiative and nonradiative decay of the self-localized e+Br-2(-) excitons. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3224860]