Abstract
Ag Concentration Dependence of Build-up Effect of Radio-photoluminescence in Ag-doped P2O5–Al2O3–Na2O–SiO2 Glasses
Highlights
Radio-photoluminescence (RPL) is a luminescence phenomenon in which photoluminescence (PL) centers are newly generated by the irradiation of phosphors.[1,2,3] Since the PL intensity is proportional to the absorbed radiation dose, RPL can be applied to dosimetry
PL centers in RPL do not disappear after the dose information is read out because the readout obtained with RPL does not depend on the recombination of electrons and holes stored at trapping centers, unlike in the case of thermally stimulated luminescence (TSL) and optically stimulated luminescence (OSL)
The build-up curve of the PANS sample doped with the largest Ag concentration (0.4 mol%) showed similar behavior to that of Glass Badge
Summary
Radio-photoluminescence (RPL) is a luminescence phenomenon in which photoluminescence (PL) centers are newly generated by the irradiation of phosphors.[1,2,3] Since the PL intensity is proportional to the absorbed radiation dose, RPL can be applied to dosimetry. Ag+ ions in the phosphate glass capture electrons or holes generated by the radiation, and part of the Ag+ ions change to Ag0 by capturing an electron (Ag+ + e−→ Ag0). The RPL intensity continues to increase following the cessation of irradiation owing to the transfer of holes, and the increase saturates after some hours at room temperature. This well-known phenomenon is termed the build-up effect
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