Ag Concentration Dependence of Build-up Effect of Radio-photoluminescence in Ag-doped P2O5–Al2O3–Na2O–SiO2 Glasses

Abstract

In this paper, we evaluated the Ag concentration dependence of the build-up effect of radiophotoluminescence (RPL) in Ag-doped P 2 O 5 -Al 2 O 3 -Na 2 O-SiO 2 (PANS) glasses. After X-ray irradiation, the Ag-doped PANS glasses showed two emission peaks at around 460 and 630 nm, assigned to blue and orange RPL components, respectively. The build-up curves of the orange RPL component had two components corresponding to the formation of the + 2 Ag dimer and Ag 2+ ions. The intensity of the component due to the + 2Ag dimer increased with increasing Ag concentration, whereas that of the component due to Ag 2+ ions decreased. It is assumed that at a high Ag concentration, the Ag + ions have a higher probability of diffusing to Ag 0 sites to form the + 2 Ag dimer because the average distance between neighboring Ag atoms in the glass structure decreases with increasing Ag concentration. Therefore, the intensity of the component due to the + 2 Ag dimer was dominant at a high concentration of Ag in the glass structure.

Optical and Optically Stimulated Luminescence Properties of Ce-doped CsCl–CaCl2–ZnCl2 Glasses

“…In addition, while personal dose monitoring applications require an effective atomic number (Z eff ) close to that of the human body in terms of bioequivalence (Z eff = 7.29), based on the composition of C 5 H 40 O 18 N, (4) IP applications such as dental diagnostics require a large Z eff for high detection efficiency. Various material forms such as single crystals, (5)(6)(7) ceramics, (8)(9)(10)(11)(12)(13) and glasses (14,15) have been investigated for dosimeter applications, and glasses have industrial advantages such as a low production cost and high moldability in comparison with single crystals and ceramics. (16) However, only Ag-doped phosphate glasses have been commercially applied in practical use, (17,18) and there have been only a few reports on the TSL and OSL properties of glasses with a large Z eff .…”

Positron-induced Radiophotoluminescence in Ag-doped Glasses

“…This glass has been used as glass badges for personal monitoring provided by Chiyoda Technol Corporation. (12)(13)(14)(15)(16)(17)(18)(19)(20)(21) It has been reported that the glass system exhibits radiophotoluminescence (RPL), (21)(22)(23)(24)(25)(26) a luminescence owing to electronic transitions within luminescent centers that are generated in phosphors by ionizing radiation. Radiation-induced effects in solid materials have been reported in a variety of fields.…”

Scintillation and Thermally Stimulated Luminescence Properties of Sn-doped CaO–B2O3–SiO2 Glasses

“…To investigate scintillation, TSL, and OSL properties, many materials such as single crystals, (14)(15)(16)(17)(18)(19)(20)(21)(22) ceramics, (23)(24)(25)(26)(27)(28)(29) and glasses (30)(31)(32)(33)(34) have been employed. The detection efficiency of scintillators and storage-type phosphors depends on the volume of the material; thus, transparent materials are preferable to detect emissions generated inside materials.…”