Abstracts Book - IMRC 2018

• SE3-P007
THERMOLUMINESCENCE PROPERTIES OF MGO: EU, LI, OBTAINED
BY GLYCINE-BASED SOLUTION COMBUSTION SYNTHESIS
Maria Alicia Gortárez Jiménez 1 , Victor R. Orante Barrón 1 , Catalina Cruz Vázquez 1 , Rodolfo
Bernal Hernández 2
1 Universidad de Sonora, Departamento de Investigación en Polímeros y Materiales, Mexico.
2 Universidad de Sonora, Departamento de Investigación en Física, Mexico.
There are only a few reports on luminescence dosimetry for undoped and
doped MgO due to the lack of reproducibility for the luminescent signal in
thermoluminescence (TL), regardless the synthesis method (i. e. solid state
reactions, crystal growth, hydrothermal synthesis, co-precipitation synthesis,
and sol-gel) [1]. Moreover, it is reported that introduction of alkaline metal ions
into lanthanide-doped MgO enhances the photoluminescence (PL) signal
significantly due to compensation charge effects with lanthanide ions [2], [3].
Motivated by these previous results regarding stimulated luminescence on
MgO, in this work, TL properties of annealed MgO: Eu, Li powder obtained by
solution combustion (SCS), using glycine as fuel, are presented for the very first
time. Characteristic TL glow curve of MgO: Eu, Li, powder samples, after being
exposed to beta radiation, consists of a single broad peak located at ~ 400 °C,
which resulted as a very stable peak at room temperature. Thus, MgO: Eu,
Li, powder samples showed remarkable TL dosimetry properties according to
the results obtained in this work: Dose response without saturation evidence
and a linear trend in the 0.14-16 Gy interval, as well as asymptotic behaviour of
the TL fading for times longer than 16 hours. The above mentioned
characteristics place MgO: Eu, Li as a promising material for low and mediumdose
dosimetry applications.
1. W. S. McKeever, M. Moscovitch and P. D. Townsend, Thermoluminescence
Dosimetry Materials: Properties and Uses (Kent: NTP) (1995). ISBN 1
870965 19 1.
2. Gu, Ch. Li, H. B. Jiang, Journal of Crystal Growth 289 (2006) 400–404.
3. Gu, Ch. Li, H. Cao, W. Chao, Y. Hu, J. Chen, A. Chen, Journal of Alloys and
Compounds 453 (2008) 361–365.
Keywords: Thermoluminescence, Solution Combustion Synthesis, MgO
Presenting authors email: aliciagortarezj@hotmail.com