Thermoluminescence and optical studies on X-irradiated terbium-doped potassium bromide crystals

This paper reports the thermoluminescence (TL) and other optical studies made on terbium-doped KBr crystals X-irradiated at room temperature. Photoluminescence studies confirm the presence of terbium ions in the KBr matrix in their trivalent form. Formation of Z 1 centres on F-bleaching of X-irradia...

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Bibliographic Details
Published in:Journal of luminescence 2010-04, Vol.130 (4), p.618-622
Main Authors: Bangaru, S., Muralidharan, G., Brahmanandhan, G.M.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
KBr:Tb 3
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Other luminescence and radiative recombination
Photoluminescence
Physics
Solid alkali halides
Thermoluminescence
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Summary:This paper reports the thermoluminescence (TL) and other optical studies made on terbium-doped KBr crystals X-irradiated at room temperature. Photoluminescence studies confirm the presence of terbium ions in the KBr matrix in their trivalent form. Formation of Z 1 centres on F-bleaching of X-irradiated crystals is observed. The characteristic emission due to Tb 3+ ions in the spectral distribution under optically stimulated emission and thermoluminescence emission confirm the participation of the Tb ions in the recombination process. TL process has been identified to be due to the thermal mobilization of electrons produced during the colouration process.
ISSN:0022-2313
1872-7883
DOI:10.1016/j.jlumin.2009.11.005