fig6

Figure 6. (A) Comparison of X-ray absorption coefficients among BGO, CsI: Tl, GOS: Tb, LuAG: Ce and GAGG: Eu³⁺; (B) X-ray-excited emission spectra, and (C) CIE chromaticity coordinates of GAGG: xEu³⁺ transparent ceramics; (D) Relationship between X-ray power and luminescence intensity of GAGG: 2at% Eu³⁺ ceramic. GAGG: Gd₃Al₃Ga₂O₁₂; CIE: International Commission on Illumination; XEL: X-ray excited luminescence; BGO: Bi₄Ge₃O₁₂, Bismuth Germanate; CsI:Tl: thallium-doped cesium iodide; GOS:Tb: Gd₂O₂S:Tb, terbium-doped gadolinium oxysulfide; LuAG:Ce: Lu₃A_l5O₁₂:Ce, cerium-doped lutetium aluminum garnet.