Photostimulated luminescence properties of neutron image plates

Abstract The luminescence properties of two commercial neutron-sensitive image-plates based on Gd 2 O 3 -doped BaFBr:Eu 2 + storage phosphors are examined. These are white Fuji plates and blue Fuji plates (BAS-ND) with Gd 2 O 3 content by weight of 34% and 50%, respectively. Both plates show two maxima in the photostimulation spectrum near 500 nm and 600 nm, with the ratio of the peak responses ( I 600 nm / I 500 nm ) 1.39 and 0.53 for the white and blue plates respectively. The optimum wavelengths for photostimulation for the two phosphors are therefore different. The response of the blue plate is only 25% that of the white plate, if each is stimulated at its optimum wavelength.