Journal
APPLIED RADIATION AND ISOTOPES
Volume 118, Issue -, Pages 12-17Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.apradiso.2016.08.016
Keywords
Thermoluminescence; UVR; Dosimetry; LaAlO3:Pr3+; Modified Pechini's method
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Funding
- projects CONACYT [223069, 254932, 177912-Y]
- project CIC-UMSNH [12626]
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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 degrees C exhibited one peak centered at 157 degrees 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 230 nm. 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. (C) 2016 Elsevier Ltd. All rights reserved.
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