A TL/OSL emission spectrometer extension of the Risø reader.
The integration of a low cost, compact sized spectrometer with the Risø reader is described. The luminescence light emitted by the sample is transmitted by an optical fibre onto a fixed entrance slit of a spectrograph. The light is measured with a high sensitivity 2048-element CCD-linear array detector (Avantes PC2000) sensitive in the UV-VIS region. The CCD array has a low readout noise and a photon sensitivity of 86 photons per count. Examples are given of both thermally and optically stimulated 3-D spectra showing the luminescence spectra as a function of temperature and time respectively. Spectra from CaF2:Tm (TLD-300) chips could be distinguished from the background (2 SD) at a 0.7 Gy dose level.
Bos
A J J
AJ
Delft University of Technology, Interfaculty Reactor Institute, The Netherlands. Bos@iri.tudelft.nl
Winkelman
A J M
AJ
Le Masson
N J M
NJ
Sidorenko
A V
AV
van Eijk
C W E
CW
D008163:Luminescent Measurements; D008962:Models, Theoretical; D013057:Spectrum Analysis / Q000379:methods; D013816:Thermodynamics; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation / Q000379:methods