Optical properties and radiation shielding features of Er3+ ions doped B2O3–SiO2–Gd2O3–CaO glasses.
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| Title: | Optical properties and radiation shielding features of Er3+ ions doped B2O3–SiO2–Gd2O3–CaO glasses. |
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| Authors: | Al-Hadeethi, Y.1 (AUTHOR), Sayyed, M.I.2,3 (AUTHOR), Raffah, Bahaaudin M.1 (AUTHOR) braffah@kau.edu.sa, Bekyarova, E.4 (AUTHOR), Rammah, Y.S.5 (AUTHOR) |
| Source: | Ceramics International. Feb2021, Vol. 47 Issue 3, p3421-3429. 9p. |
| Subjects: | Radiation shielding, Optical properties, Attenuation coefficients, Mass attenuation coefficients, Optical susceptibility |
| Abstract: | The role of Er3+ ions on the optical properties and radiation shielding features of (55-x)B 2 O 3 –10SiO 2 −25Gd 2 O 3 –10CaO−xEr 2 O 3 : (Er-glasses) with x = 0 (Er-0.0) to 2.5 (Er-2.5) mol% glasses was investigated. The Metallization criterion (Mcriterion) was found to vary from 0.5356 to 0.5346, while the static dielectric constant (εstatic) varied from 2.7340 to 2.7406 for Er-0.0 to Er-2.5 glasses. The optical electronegativity (χ*) decreased from 0.9085 to 0.8440, the nonlinear refractive index (n 2 o p t i c a l ) increased from 1.4075 × 10−12 to 1.4274 × 10−12 (esu), and the nonlinear optical susceptibility (χ3) increased from 6.1765 × 10−14 to 6.2714 × 10−14 (esu) with increasing Er 2 O 3 from 0 to 2.5 mol%. The mass attenuation coefficient (MAC) for the Er-glasses has been calculated via the Phy-X/PSD program. The highest MAC was found at 0.284 MeV, and was equal to 0.197 cm2/g for Er-0.0, 0.199 cm2/g for Er-0.5, 0.200 cm2/g for Er-1.0, 0.201 cm2/g for Er-1.5, 0.202 cm2/g for Er-2.0 and 0.204 cm2/g for Er-2.5. The linear attenuation coefficient (LAC) has the following order: (Er-2.5) LAC > (Er-2.0) LAC > (Er-1.5) LAC > (Er-1.0) LAC > (Er-0.5) LAC > (Er-0.0) LAC. The RPE for the Er-2.5 glass was found to increase from 35.06% (for x = 0.5 cm) to 82.20% (for x = 2 cm) at 0.284 MeV. At the selected energies, the transmission factor (TF) decreased with the addition of Er 2 O 3. The half value layer (HVL) of the Er-0.0-Er2.5 samples tended to decrease with the increase in Er 2 O 3 content. The tenth value layer (TVL) decreased from 2.919 to 2.667 cm at 0.284 MeV as the Er 2 O 3 increases from 0 to 2.5 mol%, while at 0.511 MeV it decreased from 5.771 to 5.377 cm. The results revealed that the Er-glasses can be applied for optical and radiation shielding uses. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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