Synthesis and thermoluminescent properties of new ZnO phosphors

被引：4
作者：
Burruel-Ibarra, S. E. [1 ]
Cruz-Vazquez, C. [1 ]
Bernal, R. [2 ]
Martinez-Castelo, J. R. [1 ]
Garcia Haro, A. R. [1 ]
Orante-Barron, V. R. [1 ]
机构：
[1] Univ Sonora, Dept Invest Polimeros & Mat, Apartado Postal 130, Hermosillo 83000, Sonora, Mexico
[2] Univ Sonora, Ctr Invest Fis, Hermosillo, Sonora, Mexico
来源：
STRUCTURAL AND CHEMICAL CHARACTERIZATION OF METALS, ALLOYS AND COMPOUNDS | 2013年 / 755卷
关键词：
ZnO; themoluminescence; dosimetry; ionizing radiation; phosphors; THIN-FILMS; STIMULATED LUMINESCENCE; SPRAY-PYROLYSIS; IRRADIATION; CU;
D O I：
10.4028/www.scientific.net/MSF.755.139
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, results on the thermoluminescence dosimetry properties of beta particle irradiated ZnO obtained by thermal annealing of chemically synthesized ZnS are reported. ZnS powder was sintered at 950 degrees C during 24 h in air, in order to obtain pellet-shaped ZnO samples. The thermoluminiescence (TL) intensity of ZnO previously exposed to beta radiation increased as the dose increased in the 0.025-6.4 kGy interval studied. Characteristic glow curves exhibited two emission maxima at similar to 94 and similar to 341 degrees C. The dosimetric peak located at similar to 341 degrees C shifted towards lower temperatures as the dose increased, which indicates that second-order kinetic processes are involved in the thermoluminiescence emission. The dose response of ZnO showed a linear behaviour in the 0.025 Gy-0.8 kGy dose interval, which makes this material suitable and promising for medical, industrial and also space dosimetry applications. The thermoluminescence total signal faded down 48 % 6 h after irradiation and showed an asymptotic behaviour for longer times, due mainly to the similar to 341 degrees C stable and dosimetric glow peak.
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页码：139 / +
页数：3
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