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Study on the photo-transfer thermoluminescence in Eu doped potassium chloride

Published online by Cambridge University Press:  10 April 2013

Hector Duran-Munoz ,
Raul Perez-Salas  and
Thomas Piters
Hector Duran-Munoz
Affiliation:
Programa de doctorado en ciencia de materiales. Departamento de Investigación en Polímeros y Materiales.
Raul Perez-Salas
Affiliation:
Departamento de Investigación en Física, Universidad de Sonora, PO Box 5-088, 83190 Hermosillo, Sonora México.
Thomas Piters
Affiliation:
Departamento de Investigación en Física, Universidad de Sonora, PO Box 5-088, 83190 Hermosillo, Sonora México.
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Abstract

In this work a survey of possible optical stimulation processes in irradiated KCl:Eu with a focusing on photo-transfer thermoluminescence (PTTL) effects are shown. For different wavelengths in the range from 180 to 800 nm a cycle of measurements was performed, each comprising of a TL measurement after light irradiation, a TL measurement after beta irradiation for reference purposes and a PTTL measurement. The latter was obtained by applying first a beta irradiation, then a partial readout up to a certain end temperature followed by a monochromatic light irradiation of a specific wavelength and finally a TL measurement. This procedure was repeated for different partial readout end temperatures. From the results the existence of at least four different photo-transfer processes, induced by 310, 245 and 550 nm light are deduced. The photo transfer process induced by an approximate value of 245 nm produced a TL glow peak not seen before in beta or light induced TL. Furthermore it was observed that some of the TL peaks created by light of 240 and 260 nm were strongly sensitized after a beta irradiation and a partial readout.

Keywords

defectsluminescencecrystal
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1526: Symposium TT – Defects and Microstructure Complexity in Materials , 2013 , mrsf12-1526-tt05-35
Copyright
Copyright © Materials Research Society 2013

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References

REFERENCES

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