Synthesis of MgB4O7:Dy3+and Thermoluminescent Characteristics at Low Doses of Beta Radiation

Authors

  • O. Legorreta-Alba Institute of Nuclear Sciences, National Autonomous University of Mexico (UNAM), PO Box 70-543, 04510 Mexico City, Mexico; Chemistry Faculty, National Autonomous University of Mexico (UNAM), 3000 Universidad avenue, 04510 Mexico City, México
  • E. Cruz-Zaragoza Institute of Nuclear Sciences, National Autonomous University of Mexico (UNAM), PO Box 70-543, 04510 Mexico City, Mexico
  • D. Diaz Chemistry Faculty, National Autonomous University of Mexico (UNAM), 3000 Universidad avenue, 04510 Mexico City, México
  • J. Marcazzo "Arroyo Seco” Institute of Physics (Uncpba) and Cificen (Uncpba-Cicpba Conicet), Pinto 399, 7000 Tandil, Argentina

DOI:

https://doi.org/10.15415/jnp.2018.61012

Keywords:

Magnesium tetraborate, Dysprosium, Thermoluminescence, Beta-radiation, Dosimeter

Abstract

The synthesis and thermoluminescent characteristics of dysprosium-doped MgB4O7 are analyzed. The phosphor at different concentrations (0, 0.1, 0.5, 1, 2 and 4 mol%) of the dopant was prepared by the solution-assisted method. The magnesium borate compound was confirmed by X-ray diffraction. The annealing and dopant concentrations effects on the crystalline matrix were investigated. The highest thermoluminescent sensitivity was found with 450°C of annealing temperature and at high Dy3+ concentration too. The un-doped MgB4O7 phosphor shows a broad glow curve which peaked at 199°C and about 306 °C. Introducing Dy3+ dopant in the matrix that behavior was strongly changed. The wide glow curve shows three glow peaks; two small shoulders at 124 and 195 °C, and a highest peak between 323 and 336 °C temperature range. A large linear dose-response (5 – 2000 mGy) beta dose was obtained. The complex glow curves were deconvolved and the kinetics parameters were determined considering the general order kinetics model.

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Published

2018-08-06

How to Cite

(1)
Legorreta-Alba, O. .; Cruz-Zaragoza, E. .; Diaz, D. .; Marcazzo, J. . Synthesis of MgB4O7:Dy3+and Thermoluminescent Characteristics at Low Doses of Beta Radiation. J. Nucl. Phy. Mat. Sci. Rad. A. 2018, 6, 71-76.

Issue

Vol. 6 No. 1 (2018)

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Articles

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Articles in Journal of Nuclear Physics, Material Sciences, Radiation and Applications (J. Nucl. Phy. Mat. Sci. Rad. A.) by Chitkara University Publications are Open Access articles that are published with licensed under a Creative Commons Attribution- CC-BY 4.0 International License. Based on a work at http://jnp.chitkara.edu.in. This license permits one to use, remix, tweak and reproduction in any medium, even commercially provided one give credit for the original creation.

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