Comparative study of silicate glasses containing Bi2O3, PbO and BaO: Radiation shielding and optical properties |
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| Authors: | K. Kirdsiri J. Kaewkhao N. Chanthima P. Limsuwan |
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| Affiliation: | 1. Department of Physics, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand;2. Thailand Center of Excellence in Physics, CHE, Ministry of Education, Bangkok 10400, Thailand;3. Center of Excellence in Glass Technology and Materials Science (CEGM), Faculty of Science and Technology, Nakhon Pathom Rajabhat University, Nakorn Pathom 73000, Thailand |
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| Abstract: | The radiation shielding and optical properties of xBi2O3:(100-x)SiO2, xPbO:(100-x)SiO2 and xBaO:(100-x)SiO2 glass systems (where 30 ? x ? 70 is the composition by weight%) have been investigated. Total mass attenuation coefficients (μm) of glasses at 662 keV were improved by increasing their Bi2O3 and PbO content, which raised the photoelectric absorption in glass matrices. Raising the BaO content to the same fraction range, however, brought no significant change to μm. These results indicate that photon is strongly attenuated in Bi2O3 and PbO containing glasses, and but not in BaO containing glass. The results from the optical absorption spectra show an edge that was not sharply defined; clearly indicating the amorphous nature of glass samples. It is observed that the cutoff wavelength for Bi2O3 containing glass was longer than PbO and BaO containing glasses. |
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| Keywords: | Mass attenuation coefficients Optical properties Glass Shielding materials |
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