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Thermoluminescence of Beta Particle Irradiated LiMgF3:X (X=Ce, Er)

Published online by Cambridge University Press:  01 February 2011

I. C. Muñoz ,
F. Brown ,
R. I. Baldenevro ,
V. R. Orante-Barrón ,
C. Cruz-Vázquez ,
C. Furetta  and
R. Bernal
I. C. Muñoz
Affiliation:
Departamento de Ciencias Químico Biológicas, Universidad de Sonora
F. Brown
Affiliation:
Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, Apartado Postal 130, Hermosillo, Sonora 83000 México
R. I. Baldenevro
Affiliation:
Departamento de Ciencias Químico Biológicas, Universidad de Sonora
V. R. Orante-Barrón
Affiliation:
Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, Apartado Postal 130, Hermosillo, Sonora 83000 México
C. Cruz-Vázquez
Affiliation:
Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, Apartado Postal 130, Hermosillo, Sonora 83000 México
C. Furetta
Affiliation:
Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, Apartado Postal 130, Hermosillo, Sonora 83000 México
R. Bernal
Affiliation:
Departamento de Investigación en Física, Universidad de Sonora, Apartado Postal 5-088, Hermosillo, Sonora 83190 México
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Abstract

The thermoluminescence (TL) properties of beta particle irradiated Ce and Er doped LiMgF3 phosphors are presented. Pellet-shaped samples were prepared by cool-pressing 74 μm size particle powder, followed by thermal annealing at 700 °C during 5 h in air atmosphere. Some samples were irradiated with beta particles in the dose range from 8 up to 128 Gy. The sensitivity of Er doped samples was greater than the one of Ce-doped. In both cases, a 2 % mol of dopant concentration was used. The TL fading was between 19 % for Ce-doped samples, and 24 % for the Er-doped. The integrated TL increases as dose increases, with no saturation clues. The TL sensitivity of samples exhibited a loss in successive irradiation – readout cycles.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1278: Composite, Hybrid Materials and Ecomaterials , 2010 , S08-26
Copyright
Copyright © Materials Research Society 2010

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