Effect of rare earth dopants on the radiation shielding properties of barium tellurite glasses
Rare earth doped barium tellurite glasses were synthesised and explored for their radiation shielding applications. All the samples showed good thermal stability with values varying between 101 °C and 135 °C based on dopants. Structural properties showed the dominance of matrix elements compared to...
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Elsevier
2021-12-01
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| Series: | Nuclear Engineering and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573321003302 |
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| author | P. Vani G. Vinitha M.I. Sayyed Maha M. AlShammari N. Manikandan |
| author_facet | P. Vani G. Vinitha M.I. Sayyed Maha M. AlShammari N. Manikandan |
| author_sort | P. Vani |
| collection | DOAJ |
| description | Rare earth doped barium tellurite glasses were synthesised and explored for their radiation shielding applications. All the samples showed good thermal stability with values varying between 101 °C and 135 °C based on dopants. Structural properties showed the dominance of matrix elements compared to rare earth dopants in forming the bridging and non-bridging atoms in the network. Bandgap values varied between 3.30 and 4.05 eV which was found to be monotonic with respective rare earth dopants indicating their modification effect in the network. Various radiation shielding parameters like linear attenuation coefficient, mean free path and half value layer were calculated and each showed the effect of doping. For all samples, LAC values decreased with increase in energy and is attributed to photoelectric mechanism. Thulium doped glasses showed the highest value of 1.18 cm−1 at 0.245 MeV for 2 mol.% doping, which decreased in the order of erbium, holmium and the base barium tellurite glass, while half value layer and mean free paths showed an opposite trend with least value for 2 mol.% thulium indicating that thulium doped samples are better attenuators compared to undoped and other rare earth doped samples. Studies indicate an increased level of thulium doping in barium tellurite glasses can lead to efficient shielding materials for high energy radiation. |
| first_indexed | 2024-12-13T20:25:51Z |
| format | Article |
| id | doaj.art-02594d0f4dc6441988565257dcfcabd4 |
| institution | Directory Open Access Journal |
| issn | 1738-5733 |
| language | English |
| last_indexed | 2024-12-13T20:25:51Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
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| series | Nuclear Engineering and Technology |
| spelling | doaj.art-02594d0f4dc6441988565257dcfcabd42022-12-21T23:32:33ZengElsevierNuclear Engineering and Technology1738-57332021-12-01531241064113Effect of rare earth dopants on the radiation shielding properties of barium tellurite glassesP. Vani0G. Vinitha1M.I. Sayyed2Maha M. AlShammari3N. Manikandan4Division of Physics, School of Advanced Sciences, Vellore Institute of Technology, Chennai, 600127, IndiaDivision of Physics, School of Advanced Sciences, Vellore Institute of Technology, Chennai, 600127, IndiaDepartment of Physics, Faculty of Science, Isra University, Amman, Jordan; Department of Nuclear Medicine Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University (IAU), P.O. Box 1982, Dammam, 31441, Saudi ArabiaComputational Unit, Department of Environmental Health, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, Dammam, 31441, Saudi ArabiaDivision of Physics, School of Advanced Sciences, Vellore Institute of Technology, Chennai, 600127, India; Corresponding author.Rare earth doped barium tellurite glasses were synthesised and explored for their radiation shielding applications. All the samples showed good thermal stability with values varying between 101 °C and 135 °C based on dopants. Structural properties showed the dominance of matrix elements compared to rare earth dopants in forming the bridging and non-bridging atoms in the network. Bandgap values varied between 3.30 and 4.05 eV which was found to be monotonic with respective rare earth dopants indicating their modification effect in the network. Various radiation shielding parameters like linear attenuation coefficient, mean free path and half value layer were calculated and each showed the effect of doping. For all samples, LAC values decreased with increase in energy and is attributed to photoelectric mechanism. Thulium doped glasses showed the highest value of 1.18 cm−1 at 0.245 MeV for 2 mol.% doping, which decreased in the order of erbium, holmium and the base barium tellurite glass, while half value layer and mean free paths showed an opposite trend with least value for 2 mol.% thulium indicating that thulium doped samples are better attenuators compared to undoped and other rare earth doped samples. Studies indicate an increased level of thulium doping in barium tellurite glasses can lead to efficient shielding materials for high energy radiation.http://www.sciencedirect.com/science/article/pii/S1738573321003302Tellurite glassesRare earth dopantsRadiation shieldingLinear attenuation coefficientHalf value layer |
| spellingShingle | P. Vani G. Vinitha M.I. Sayyed Maha M. AlShammari N. Manikandan Effect of rare earth dopants on the radiation shielding properties of barium tellurite glasses Nuclear Engineering and Technology Tellurite glasses Rare earth dopants Radiation shielding Linear attenuation coefficient Half value layer |
| title | Effect of rare earth dopants on the radiation shielding properties of barium tellurite glasses |
| title_full | Effect of rare earth dopants on the radiation shielding properties of barium tellurite glasses |
| title_fullStr | Effect of rare earth dopants on the radiation shielding properties of barium tellurite glasses |
| title_full_unstemmed | Effect of rare earth dopants on the radiation shielding properties of barium tellurite glasses |
| title_short | Effect of rare earth dopants on the radiation shielding properties of barium tellurite glasses |
| title_sort | effect of rare earth dopants on the radiation shielding properties of barium tellurite glasses |
| topic | Tellurite glasses Rare earth dopants Radiation shielding Linear attenuation coefficient Half value layer |
| url | http://www.sciencedirect.com/science/article/pii/S1738573321003302 |
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