Investigation of radiation-induced luminescence properties of high-density barium phosphate glasses doped with Ce3+

초록

The Ce3+ doped barium-zinc-gadolinium-phosphate glass samples with composition 20BaCO3-10ZnO-8Gd2O3- (62- x )P 2 O 5- x CeBr3 (where x = 0.15, 0.25, 0.5, and 0.75 mol.%) were fabricated by employing melt-quenching traditional method. The PXRD studies were performed to verify the amorphous form of the fabricated glasses. FESEM was utilised to check the particle size and shape of prepared samples. The measurements of EDS were employed to find out the elements available in the glasses. Wideband emission was observed in the 300-400 nm range in the obtained spectra under X-ray and UV-VIS excitations, revealing a 5d-4f transition of Ce3+-ions. The detected excitation bands found broad for prepared glasses include 4f electronic energy level transitions belonging to Gd3+ and the 5d electronic energy levels belonging to the Ce3+ excitation energy band situated at 308 nm. The scintillation property was investigated with alpha-particles and gamma-rays excitations using 241 Am and 137 Cs, 22 Na radiation sources, respectively. The lifetime of the prepared glass samples was studied under 286 nm UV excitation and found 28.94 +/- 0.12 ns as a short component and 166.47 +/- 23.44 ns long component with 85 % and 15 % contributions, respectively for PBZG-0.25Ce glass sample.

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