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Study of the luminescent properties of KMgF3:Sm |
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| Authors: | J Marcazzó M Santiago C D’Angelo C Furetta |
| Affiliation: | a IFAS, Facultad de Ciencias Exactas, Universidad Nacional del Centro de la Provincia de Buenos Aires, Pinto 399, 7000 Tandil, Argentina b Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Rivadavia 1917, 1033 Buenos Aires, Argentina c Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CICPBA), calle 526 entre 10 y 11, 1900 La Plata, Argentina d Touro University Rome, Division of Touro College New York, Circ.ne Gianicolense 15-17, 00153 Rome, Italy |
| Abstract: | The photoluminescence (PL), radioluminescence (RL) and thermoluminescence (TL) of KMgF3 doped at several Sm concentrations have been investigated. The maximum TL and RL yield under beta irradiation has been observed in KMgF3:Sm 0.02 mol%. The glow curve of this doped perovskite is made up of at least five peaks located at 95, 120, 160, 270, and 330 °C. The third peak appears to be the most convenient for personal or environmental dosimetry, since it shows no fading and good linearity within the investigated dose range (0.020-200 Gy). From the RL and PL spectra it has been found that most of KMgF3:Sm emission is located at wavelengths higher than 650 nm. This emission, which is characteristic of Sm2+, makes this doped compound attractive for fiber-optic dosimetry. |
| Keywords: | Samarium Thermoluminescence Radioluminescence |
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