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Appl Radiat Isot. 2016 Dec;118:12-17. doi: 10.1016/j.apradiso.2016.08.016. Epub 2016 Aug 21.

Synthesis and thermoluminescence of LaAlO3:Pr3+ to UVC radiation dosimetry.

Author information

1
Instituto de Investigación en Metalurgia y Materiales de la Universidad Michoacana de San Nicolás de Hidalgo, Edif. "U", C.U. 58060 Morelia, Michoacán, Mexico.
2
Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco, Col. Vicentino, 09340 México City, Mexico.
3
Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada-Legaria, Av. Legaria 694, 11500 México City, Mexico. Electronic address: riveramt@hotmail.com.

Abstract

Thermoluminescent (TL) response of trivalent praseodymium ion doped lanthanum aluminate (LaAlO3:Pr3+) obtained by Pechini method and Spray Dryer was studied. TL response of LaAlO3:Pr3+ powders submitted at 1600°C exhibited one peak centered at 157°C. Sensitivity of LaAlO3:Pr3+ was improved in around 90 times compared with undoped LaAlO3. TL response as a function of wavelength showed a maximum in 230nm. Dosimetric characteristics of LaAlO3:Pr3+ under UVR radiation effects were analyzed. Evaluation of activation energy was obtained by Glow Fit v.1.3 software. Experimental results about thermoluminescent characteristics of LaAlO3:Pr3+ suggest as good candidate to be employed as a complementary thermoluminescent device with other TL phosphors as aluminum oxide.

KEYWORDS:

Dosimetry; LaAlO(3):Pr(3+); Modified Pechini's method; Thermoluminescence; UVR

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