Thermoluminescent properties of calcium fluoride doped with lanthanum and aluminum

de Melo, A.P. and de Lima, J.F. and Figueredo, A.M.G. and Chadwick, Alan V. and Valerio, M.E.G. (1997) Thermoluminescent properties of calcium fluoride doped with lanthanum and aluminum. In: 13th International Conference on Defects in Insulating Materials (ICDIM 96), July 15-19, 1996, Winston Salem, Nc. (The full text of this publication is not available from this repository)

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Abstract

In the present paper we studied the TL emission of CaF2 doped with Al3+ and La3+ in the nominal concentration range from 0.01 to I mol %. The sample doped with Al3+ showed the best sensitivity to gamma-rays while the pure sample displayed the best sensitivity to UV and visible light. The TL signal of the Al3+ doped sample has a maximum intensity for a nominal concentration of 0.2 mol% of the dopant while in the La3+ sample, the TL emission increases with the concentration of the dopant. The tridimensional TL plot revealed that the emission at 480 nn, observed in all samples, can be due to a luminescence center of intrinsic origin while the emission at 570 nm of the Al3+ doped sample is due to a transition of the Al3+ ion.

Item Type: Conference or workshop item (Paper)
Depositing User: T. Nasir
Date Deposited: 24 Oct 2009 14:36
Last Modified: 14 May 2014 11:15
Resource URI: http://kar.kent.ac.uk/id/eprint/18394 (The current URI for this page, for reference purposes)
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