Abstract
Silver (Ag+) doped phosphate glass after exposure to ionizing radiation has an intense luminescence by stimulating with ultra-violet light. This phenomenon is called radiophotoluminescence (RPL). The RPL intensity was increased linearly with increasing X-ray irradiation dose up to about 1000 Gy. Small amount of bead-type RPL glass as large as about 0.05mm was well prepared with a jet flame system. It was confirmed that the RPL glass beads could be used as passive-type radiation dosimeters. Visualization and monitoring system of radiation dose distribution utilizing RPL phenomenon in the Ag+-doped phosphate glass are developed in this study. In the presentation, the basic luminescence properties are reported as well as the application of Ag+-doped phosphate glass beads to radiation dose distribution monitoring.
Highlights
Silver (Ag+) doped phosphate glass irradiated with ionizing radiation exhibit an intense emission of visible photons when excited by ultraviolet (UV) light
The electrons are captured into Ag+ ions in the glass structure and the Ag+ ions change to Ag0 ions
The RPL intensity is proportional to the amount of ionizing radiation, meaning that RPL in the glass can be utilized as passive-type dosimeters
Summary
Silver (Ag+) doped phosphate glass irradiated with ionizing radiation exhibit an intense emission of visible photons when excited by ultraviolet (UV) light. The RPL phenomenon in Ag+-doped phosphate glass has, been applied to a passive-type radiation dosimeter.
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