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<p>The effect of BaO/CeO<sub>2</sub> substitution on the structure, linear optical properties, and γ-ray absorption efficiency of glasses with formulation 50B<sub>2</sub>O<sub>3</sub> + 25Bi<sub>2</sub>O<sub>3</sub>+(10-<i>x</i>)BaO + 15Li<sub>2</sub>O + XCeO<sub>2</sub>: X = 0 (BBBLC-0.0) – 1 (BBBLC-1.0) mol% has been investigated. The traditional melt-quenching route is used for the glass production process. Raman spectroscopy, UV-Vis measurement, MCNP simulation code and EpiXs software were employed to achieve the mentioned objective. Density (ρ) slightly increased from 4.6892 to 4.7011&#xa0;g/cm<sup>3</sup>, while molar volume (V<sub>m</sub>) decreased from 36.4913 to 36.4389 cm<sup>3</sup>/mol as CeO<sub>2</sub> increased in the glass network. Raman intensity decreased as the concentration of CeO<sub>2</sub> increased in the glass network, which leads to a decrease in the formation of additional non-bridging oxygen (NBO) and bond breakage. The values of direct optical gap (<InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41779_2024_1115_Article_IEq1.gif" Format="GIF" Height="24" Rendition="HTML" Resolution="72" Type="Linedraw" Width="64" /> </InlineMediaObject> <EquationSource Format="TEX">\(\:{\varvec{E}}_{\varvec{g}}^{\varvec{D}\varvec{i}\varvec{r}\varvec{e}\varvec{c}\varvec{t}})\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mspace width="0.222222em" /> <msubsup> <mrow> <mi mathvariant="bold-italic">E</mi> </mrow> <mrow> <mrow> <mi mathvariant="bold-italic">g</mi> </mrow> </mrow> <mrow> <mrow> <mi mathvariant="bold-italic">D</mi> </mrow> <mrow> <mi mathvariant="bold-italic">i</mi> </mrow> <mrow> <mi mathvariant="bold-italic">r</mi> </mrow> <mrow> <mi mathvariant="bold-italic">e</mi> </mrow> <mrow> <mi mathvariant="bold-italic">c</mi> </mrow> <mrow> <mi mathvariant="bold-italic">t</mi> </mrow> </mrow> </msubsup> <mrow> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation> reduced going from 2.53 ± 0.01&#xa0;eV to 2.25 ± 0.01&#xa0;eV, while values of the indirect gap (<InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41779_2024_1115_Article_IEq2.gif" Format="GIF" Height="24" Rendition="HTML" Resolution="72" Type="Linedraw" Width="70" /> </InlineMediaObject> <EquationSource Format="TEX">\(\:{\varvec{E}}_{\varvec{g}}^{\varvec{I}\varvec{n}\varvec{d}\varvec{i}\varvec{r}\varvec{e}\varvec{c}\varvec{t}}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mspace width="0.222222em" /> <msubsup> <mrow> <mi mathvariant="bold-italic">E</mi> </mrow> <mrow> <mrow> <mi mathvariant="bold-italic">g</mi> </mrow> </mrow> <mrow> <mrow> <mi mathvariant="bold-italic">I</mi> </mrow> <mrow> <mi mathvariant="bold-italic">n</mi> </mrow> <mrow> <mi mathvariant="bold-italic">d</mi> </mrow> <mrow> <mi mathvariant="bold-italic">i</mi> </mrow> <mrow> <mi mathvariant="bold-italic">r</mi> </mrow> <mrow> <mi mathvariant="bold-italic">e</mi> </mrow> <mrow> <mi mathvariant="bold-italic">c</mi> </mrow> <mrow> <mi mathvariant="bold-italic">t</mi> </mrow> </mrow> </msubsup> </mrow> </math></EquationSource> </InlineEquation>) varied from 2.51 ± 0.01&#xa0;eV to 2.17 ± 0.01&#xa0;eV. Values of Urbach’s energy (E<sub>U</sub>) declined from 0.4052 to 0.3282&#xa0;eV for BBBLC-1.0. As the substitution ratio of Ce ions increased, the refractive index (n) and optical dielectric constants (ε<sub>1</sub> and ε<sub>2</sub>) improved. Linear absorption coefficient <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="41779_2024_1115_Article_IEq3.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="28" /> </InlineMediaObject> <EquationSource Format="TEX">\(\:\left({\upmu\:}\right)\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mspace width="0.222222em" /> <mfenced close=")" open="("> <mrow> <mi mathvariant="normal">μ</mi> <mspace width="0.222222em" /> </mrow> </mfenced> </mrow> </math></EquationSource> </InlineEquation> verified as: BBBLC-0.0 &lt; BBBLC-0.25 &lt; BBBLC-0.5 &lt; BBBLC-0.75 &lt; BBBLC-1.0. In terms of half-value (HVl), and tenth-value (TVl) values, the synthesized BBBLC-1.0 sample is the lowest. When compared to the manufactured BBBLC-X glasses, the BBBLC-1.0 sample offers superior protection against gamma radiation.</p>

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Tailoring the structural, physical, opto-electrical characteristics, neutron and γ-ray attenuation competence of BaO/CeO2 bismo-borate glasses

  • 期刊论文

  • 发表日期：

    2025年1月15日

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  • A. S. Abouhaswa,
  • Norah A. M. Alsaif,
  • A. M. Abdelghany,
  • Y. S. Rammah,
  • Islam M. Nabil

摘要

The effect of BaO/CeO2 substitution on the structure, linear optical properties, and γ-ray absorption efficiency of glasses with formulation 50B2O3 + 25Bi2O3+(10-x)BaO + 15Li2O + XCeO2: X = 0 (BBBLC-0.0) – 1 (BBBLC-1.0) mol% has been investigated. The traditional melt-quenching route is used for the glass production process. Raman spectroscopy, UV-Vis measurement, MCNP simulation code and EpiXs software were employed to achieve the mentioned objective. Density (ρ) slightly increased from 4.6892 to 4.7011 g/cm3, while molar volume (Vm) decreased from 36.4913 to 36.4389 cm3/mol as CeO2 increased in the glass network. Raman intensity decreased as the concentration of CeO2 increased in the glass network, which leads to a decrease in the formation of additional non-bridging oxygen (NBO) and bond breakage. The values of direct optical gap ( \(\:{\varvec{E}}_{\varvec{g}}^{\varvec{D}\varvec{i}\varvec{r}\varvec{e}\varvec{c}\varvec{t}})\) E g D i r e c t ) reduced going from 2.53 ± 0.01 eV to 2.25 ± 0.01 eV, while values of the indirect gap ( \(\:{\varvec{E}}_{\varvec{g}}^{\varvec{I}\varvec{n}\varvec{d}\varvec{i}\varvec{r}\varvec{e}\varvec{c}\varvec{t}}\) E g I n d i r e c t ) varied from 2.51 ± 0.01 eV to 2.17 ± 0.01 eV. Values of Urbach’s energy (EU) declined from 0.4052 to 0.3282 eV for BBBLC-1.0. As the substitution ratio of Ce ions increased, the refractive index (n) and optical dielectric constants (ε1 and ε2) improved. Linear absorption coefficient \(\:\left({\upmu\:}\right)\) μ verified as: BBBLC-0.0 < BBBLC-0.25 < BBBLC-0.5 < BBBLC-0.75 < BBBLC-1.0. In terms of half-value (HVl), and tenth-value (TVl) values, the synthesized BBBLC-1.0 sample is the lowest. When compared to the manufactured BBBLC-X glasses, the BBBLC-1.0 sample offers superior protection against gamma radiation.