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Artículo

Thermoluminescent characterization of Al2O3-derived synthetic topaz

Trujillo Vazquez, E.; Pech Canul, M. I.; Marcazzo, Salvador JulianIcon
Fecha de publicación: 12/2016
Editorial: Elsevier Science
Revista: Journal Of Alloys And Compounds
ISSN: 0925-8388
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Física Atómica, Molecular y Química

Resumen

Albeit the thermoluminescent properties of both Al2O3 and natural topaz have been documented, owing to a controlled composition, the prospective of synthetic topaz for dosimetry applications is expected to be further promising. In this contribution, the thermoluminescent (Tl) properties of synthetic topaz (Al2F1.44(OH)0.56SiO4) containing materials are reported for the first time. Synthesis tests by chemical vapor deposition (CVD) were conducted using aluminum oxide (Al2O3) and sodium hexafluorosilicate (Na2SiF6) as solid precursor, varying temperature, time, Al2O3 compact angle position, and atmosphere during dwell stage (with and without nitrogen). Subsequently, samples were thermally treated at 500, 600, 700, 750, 800, 850 and 900 °C. Results indicate that samples treated at 800 °C show a standard deviation of 1.2% (SD %) of the area under the glow curve in the range 53–300 °C. Irradiation with 90Sr beta-source of sample A4 (800 °C), from 0.022 Gy to 66 Gy, revealed a nonlinear response, with intensity increasing as doses increase. In addition to the fact that synthesized topaz-containing material possesses a similar Tl intensity compared with that of the commercial dosimeter TLD-100, incidence of the greatest fading (<22%) during the first 20 h suggests its potential application in dosimetry.
Palabras clave: Topaz Synthesis , Cvd , Dosimetry , Thermoluminescent Properties
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)
Identificadores
URI: http://hdl.handle.net/11336/18282
DOI: http://dx.doi.org/10.1016/j.jallcom.2016.08.014
URL: http://www.sciencedirect.com/science/article/pii/S0925838816323817?via%3Dihub
Colecciones
Articulos(CIFICEN)
Articulos de CENTRO DE INV. EN FISICA E INGENIERIA DEL CENTRO DE LA PCIA. DE BS. AS.
Citación
Trujillo Vazquez, E.; Pech Canul, M. I.; Marcazzo, Salvador Julian; Thermoluminescent characterization of Al2O3-derived synthetic topaz; Elsevier Science; Journal Of Alloys And Compounds; 689; 12-2016; 500-506
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