CIFICEN   24414
CENTRO DE INVESTIGACIONES EN FISICA E INGENIERIA DEL CENTRO DE LA PROVINCIA DE BUENOS AIRES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Optically Stimulated Luminescence Properties of Tm3+ doped KMgF3 Fluoroperovskite
Autor/es:
L. CAMARGO; S.A. MARTÍNEZ OVALLE; E.CRUZ-ZARAGOZA; L. PEREZ CRUZ; J. MARCAZZÓ
Lugar:
Santo Domingo
Reunión:
Congreso; XVII Internacional Symposium on Solid State Dosimetry ISSSD 2017; 2017
Resumen:
In this work the optically stimulated luminescence (OSL) properties of undoped and Tm3+-doped KMgF3 fluoroperovskite have been investigated for the first time. OSL efficiency for stimulation with different wavelengths has been analyzed for each compound and maximum OSL emission was found when blue light is employed for stimulation. The radioluminescence (RL) spectra have shown two emission peaks at 455 and 360 nm, which can be ascribed to the 1D2?3F4 and 1D2?3H6 transitions of the Tm3+ cations. It has been found that doping with Thulium 0.5 mol % renders the most intense OSL emission. Furthermore, several dosimetric properties such as OSL response as a function of dose, reproducibility of the OSL signal after several cycles of irradiation-readout and the minimum detectable dose have been investigated. Finally, the OSL response of KMgF3:Tm3+ has been compared to that of commercial Al2O3:C and the possible application of this fluoroperovskite to OSL dosimetry has been evaluated.