deMelo, A.P. and deLima, J.F. and Figueredo, A.M.G. and Chadwick, A.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.
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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:||24 Oct 2009 14:36|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/18394 (The current URI for this page, for reference purposes)|
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