4.6 Article

X-ray radiation shielding of CeO2 doped borosilicate glasses and their luminescence characteristics

期刊

RADIATION PHYSICS AND CHEMISTRY
卷 191, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.radphyschem.2021.109825

关键词

CeO2; Luminescence; Radiation; Shielding; X-ray

资金

  1. Center of Radiation research and Medical Imaging, Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University
  2. National Research Council of Thailand (NRCT)
  3. Thailand Science Research and Innovation (TSRI)
  4. Chiang Mai University

向作者/读者索取更多资源

Novel shielding glasses with different CeO2 concentrations were fabricated and studied for their luminescent and radiation shielding properties. The glasses showed redshift in UV range due to higher Ce concentration, with emission bands observed from Ce3+ ion. The glasses exhibited good X-ray shielding behavior and potential applications in radiation shielding and UV emitting devices.
The novel shielding materials from (55-x) SiO2: 13B2O3: 1Al2O3: 4.5BaO: 6.3CaO: 0.2Sb2O3: 20Na2O: xCeO2 where x = 1, 2, 3, 4 and 5 mol% glasses have been fabricated at different CeO2 concentration by melt-quenching technique and studied the luminescence and radiation shielding properties. The transmission spectra show redshift in UV range, due to higher Ce concentration in the glass matrix. The emission bands of glasses around 393 nm were observed from the 5d-4f transition of an electron in the Ce3+ ion. In the present glass matrix doped with CeO2 shows oxidation state of both Ce3+ and Ce4+. Decay curves are also investigated and found to be less than 100 ns. The X-rays shielding properties such as half-value layer (HVL), tenth value layer (TVL), mean free path (MFP), and linear attenuation coefficients (mu) of glass were investigated. The HVL values of glass samples at 5 mol% has better shielding behavior than commercial x-ray windows. The obtained results from the measurements suggests that these glasses are potential host for radiation shielding material application and also UV emitting device applications.

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