Radio-photoluminescence of Silver-doped Phosphate Glass
P. Aryal(a), H. J. Kim(a*), S. Saha(a), S.C. Kang(a), J.Y. Cho(a), S. J. Kang(b)
(a) Department of Physics, Kyungpook National University, Daegu 41566, Korea
(b) School of Liberal Arts, Semyung University, Jechon 27136, Korea
Abstract
Commercial silver-doped phosphate glass is a promising solid-state radio-photoluminescent (RPL) dosimeter. It has several promising characteristics as RPL intensity linearity with the ionizing irradiation dose, data accumulation, no fading, and measurement repeatability. It can be used as personal, environmental, and clinical dosimeters as well. The objective of this study was to synthesize silver-doped phosphate glass at laboratory and optimize the Ag+ concentration. The absorption, emission and excitation properties of the prepared glass was measured before and after proton and X-ray irradiations. Yellow emission peak at 600 nm and excitation peak at 320 nm was measured after X-ray, proton and beta irradiation. Radiative lifetime of the glass had two decay components for yellow RPL. A more comprehensive study on Ag+ concentration optimization is under study to investigate optimum RPL properties of the silver-doped phosphate glass.
Keywords: Dosimeter, Radiative lifetime, Radio-photoluminescence, X-ray irradiation
Topic: Optical, luminescence, Electronic Materials and applications