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Open AccessArticle

Usability of Cr-Doped Alumina in Dosimetry

Institute of Solid State Physics, University of Latvia, Riga LV-1063, Latvia
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Ceramics 2019, 2(3), 525-535; https://doi.org/10.3390/ceramics2030040
Received: 30 June 2019 / Revised: 2 August 2019 / Accepted: 19 August 2019 / Published: 2 September 2019
(This article belongs to the Special Issue Advances in Luminescent Materials)
Dosimetry is a widespread material science field dealing with detection and quantification of ionizing radiation using electronic processes in materials. One of the main aspects that determines the performance of dosimeters is the type of defects the material contains. Crystalline lattice imperfections are formed around impurity ions, which may have a smaller or larger size, or different oxidation states compared to host ions. In this study, we show what effects Cr impurities have on the luminescent properties of alumina. Porous Al 2 O 3 : Cr microceramics synthesized using the sol-gel method showed a higher thermoluminescence response than a single crystal ruby. We have found that Cr 2 O 3 concentration of 0.2 wt% was optimal; it yielded the highest X-ray luminescence and thermostimulated luminescence readout of all studied additive concentrations added to alumina during synthesis. Our results show that Cr doped alumina could potentially be used as a promising new material for dosimetry of ionizing radiation. View Full-Text
Keywords: dosimetry; alumina; chromium; sol-gel; Al2O3: Cr dosimetry; alumina; chromium; sol-gel; Al2O3: Cr
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Einbergs, E.; Zolotarjovs, A.; Bite, I.; Laganovska, K.; Auzins, K.; Smits, K.; Trinkler, L. Usability of Cr-Doped Alumina in Dosimetry. Ceramics 2019, 2, 525-535.

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