Preliminary analyses of radiophotoluminescence centers in a recently developed Ag-doped alkali-phosphate glass (SAPANS)

• DOI: 10.1016/j.radmeas.2024.107134
• Publication Date: 2024-04-17T00:07:20Z
• Authors: Hiroshi Yasuda; Hiroki Kawamoto; Keisuke Asai; Yasuhiro Koguchi
• Keywords: Phosphate glass

The mechanism behind radiophotoluminescence (RPL) emission in Ag-doped alkali-phosphate glass remains unclear. To contribute to resolving this issue, the authors measured and analyzed temporal change of electron spin/paramagnetic resonance (ESR) spectrum a recently developed, weather-resistant RPL glass, named "SAPANS," after irradiation with X-rays. As result, continuous gradual increase Ag2+-derived signals was observed even at four weeks post-irradiation, which corresponded well time build-up pattern SAPANS. In contrast, derived from phosphorous-oxygen-hole centers (POHC) rapidly decreased over few days. peaks Ag0 Ag2+ were not successfully separated ESR spectra because possible overlap unidentified peaks, implies complex RPL-center formation that requires further investigation.