Figure 6

(a) The PL emission and excitation spectra under Ce3+ excitation of Ce:GB glasses before γ-irradiation and (b) after γ-irradiation, (c) the comparative PL spectra before and after γ-irradiation of 0.3CeGB glass.

(a) The PL emission and excitation spectra under Ce3+ excitation of Ce:GB glasses before γ-irradiation and (b) after γ-irradiation, (c) the comparative PL spectra before and after γ-irradiation of 0.3CeGB glass.