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Título

Luminescence emission of natural fluorite and synthetic CaF2: Mn (TLD-400)

Autor Topaksu, Mustafa; Correcher, Virgilio; García-Guinea, Javier
Palabras clave Thermoluminescence
Cathodoluminescence
TLD-400
Fluorite
Fecha de publicación feb-2016
EditorElsevier
Citación Radiation Physics and Chemistry 119: 151-156 (2016)
Resumen© 2015 Elsevier Ltd. The luminescence properties of natural white fluorite indicate that it could be employed as radiation dosimeter similarly to synthetic CaF2:Mn (TLD-400). The cathodoluminescence emission of the natural sample (two maxima) meanwhile TLD-400 (one peak) exhibits a different behaviour associated with the chemical composition. The mineral sample displays (i) a significant UV-blue emission associated with different structural defects (negligible in the synthetic sample) and (ii) a shift of the green emission to higher wavelengths respect to the TLD-400. The green induced TL emission also shows significant differences in intensity (higher in TLD-400) and sensitivity. Both samples display a complex induced green TL glow curve that could not be analysed assuming the model based on the discrete trap distribution. The Tm-Tstop method indicates the presence of close overlapping groups of components linked probably to a continuum in the trap distribution rather than a single trapping level.
URI http://hdl.handle.net/10261/155552
Identificadoresdoi: 10.1016/j.radphyschem.2015.10.002
issn: 1879-0895
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