Akademik Veri Yönetim Sistemi
Journal of Luminescence, cilt.286, 2025 (SCI-Expanded)
The aim of this work is to evaluate the luminescent and dosimetric properties of newly developed KCaPO4:Ce0.1%,Na0.1%. Optically Stimulated Luminescence (OSL) phosphor by conventional high temperature solid-state reaction. We investigated Thermoluminescence (TL), OSL, and radioluminescence (RL) of KCaPO4:Ce0.1%,Na0.1%. This new phosphor has a main TL peak at 130 °C (with a heating rate of 3 °C/s) associated with Ce3+ emission that is correlated with the obtained OSL signal. The RL emission spectrum of the KCaPO4:Ce0.1%,Na0.1% ceramic gives an emission at 385 nm attributed to the 4f0 5d1 →4f1(2F5/2) transition. The TL emission spectra of this phosphor gave a strong emission around 750 nm. The relevant dosimetric properties of the blue light (470 nm) stimulated KCaPO4:Ce0.1%,Na0.1% comprising the dose response, minimum detectable dose, reproducibility and fading were evaluated for applications in OSL dosimetry. The OSL response of KCaPO4:Ce0.1%,Na0.1% is linear as a function of the absorbed dose between 1 and 50 Gy. Fading of ∼5.8% was observed in the first 24 h, probably due to shallow traps, and approached fading of ∼9.0% in a week. This phosphate-based phosphor KCaPO4 after doping with lanthanide Ce3+ and alkali metal Na+ are potentially suitable for personal dosimetry, medical dosimetry and environmental monitoring around nuclear sites. The fast luminescence character of Ce3+ make this material also a strong candidate for 2D OSL dose mapping.