Radiation Protection Dosimetry 2002-01-01

High resolution emission spectra of TL materials.

T Vilaithong, S Wanwilairat, M Rhodes, W Hoffmann, T Messarius

Index: Radiat. Prot. Dosimetry 100(1-4) , 211-6, (2002)

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Abstract

High resolution emission spectra of several TL materials, that are commonly used in dosimetry, were measured using a low cost fibre optic spectrometer containing a 2048 pixel CCD array. The spectra were taken from 177 to 890 nm with a wavelength resolution of 1.3 nm. This allowed for line width discrimination and the resolution of transitions that have not been seen so far. For rare earth doped materials like CaF2:Tm (TLD-300) and CaF2:Dy (TLD-200) the spectral lines were compared to the energy levels measured by Dieke and Crosswhite leading to the identification of most of the transition lines.