| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1875648 | Applied Radiation and Isotopes | 2016 | 6 Pages |
•High sensitivity of new phosphor to UVC dosimetry was is studied.•Thermoluminescence response of LaAlO3:Pr3+ is presented.•LaAlO3:Pr3+ is suggested as UVCR dosimeter.•TL response of LaAlO3:Pr3+ has dependence on sintering temperature.
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 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
