Effects of the ionizing irradiation of γ-rays, X-rays, and UV-rays on the optical properties of Ag-contained/Ag-free photo-thermo-refractive glass

To simulate the effects of ionizing irradiation on photo-thermo-refractive (PTR) glass in a cosmicenvironment, the optical properties changes under ionizing irradiation (γ-, X- and UV-ray) were investigatedon PTR-glass with and without Ag doped (named as PTR-S and PTR-F, respectively) samples.Thermoluminescence (TL), transmission electron microscopy (TEM) measurements, UV-VIS absorptionspectroscopy analysis, Gaussian peak fitting, and continuous wave electron paramagnetic resonance (CW-EPR)were used to determine the species of the irradiation-induced color centers. The radiation resistance propertiesof the Ag-species on the PTR-S glass were evaluated by comparing the defect center concentrations in theirradiated PTR-S and PTR-F glasses.