Thermoluminescent analysis of CaSO4:Tb,Eu crystal powder for dosimetric purposes |
| |
| Affiliation: | 1. Departamento de Física, Universidade Federal de Sergipe, São Cristóvão, SE, Brazil;2. Instituto de Pesquisas Energéticas e Nucleares/Comissão Nacional de Energia Nuclear, São Paulo, Brazil;1. Department of Experimental Physics, Ural Federal University, Ekaterinburg, Russia;2. Radiation Laboratory, Institute of Industrial Ecology, UB RAS, Ekaterinburg, Russia;1. Department of Physics, Fergusson College, Savitribai Phule Pune University, Pune, 411004, India;2. Department of Physics, Savitribai Phule Pune University, Pune, 411007, India;3. Department of Physics and Astrophysics, University of Delhi, Delhi, 110007, India;4. SSGM College of Engineering, Shegaon, 444203, India;5. Department of Radiation Oncology, Command Hospital (SC), Pune, 411040, India;6. B-6, Ameya Co-op. Housing Society, Sector 9-A, Vashi, Navi Mumbai, 400703, India;1. Solid State Physics Section, School of Physics, Faculty of Sciences, Aristotle University of Thessaloniki, GR-54124, Thessaloniki, Greece;2. Nuclear and Elementary Physics Laboratory, School of Physics, Faculty of Sciences, Aristotle University of Thessaloniki, GR-54124, Thessaloniki, Greece;3. Institute of Nuclear Sciences, Ankara University, TR-06100, Beşevler, Ankara, Turkey;1. Department of Physics, RTM Nagpur University, Nagpur 440033, India;2. Department of Chemistry, Sevadal Mahila Mahavidyalaya, Nagpur 440009, India |
| |
| Abstract: | The motivation of this work was to produce crystals of CaSO4 doped with an unusual combination of RE elements such as terbium (Tb) and europium (Eu) in different concentrations, and analyze its thermoluminescent (TL) properties. The crystals were produced by the slow evaporation route using calcium carbonate (CaCO3) as precursor, and incorporating the dopants (Tb2O3 and Eu2O3) in a solution of sulfuric acid, that is evaporated and collected again, leaving just CaSO4:Tb,Eu crystal powder. The terbium and europium ions were incorporated in concentration ratios of 1:1, 2:1 and 5:1 (weight proportions). X-ray diffraction analyses showed that samples of doped CaSO4 exhibit only a single phase corresponding to the crystal structure of anhydrite. The radioluminescence confirmed the presence of Tb3+ and Eu2+ in the crystal matrix. The CaSO4:Tb,Eu crystal powders showed TL emission glow curves with three peaks centered around 170 °C, 270 °C and 340 °C, after irradiation with a 90Sr/90Y source. Thermoluminescent (TL) characteristics such as linearity, reproducibility and fading were evaluated. Samples produced with concentration ratio of 2:1 of Tb and Eu showed the highest TL intensity. The produced CaSO4:Tb,Eu samples present TL properties useful for dosimetric purposes. |
| |
| Keywords: | TL Dosimetry |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
