Tailoring optical and radiation shielding properties of manganese lead borate glasses via silver iodide modification

IF 1.8 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Applied Radiation and Isotopes Pub Date : 2026-06-01 Epub Date: 2026-03-07 DOI:10.1016/j.apradiso.2026.112530

Islam M. Nabil , Ashraf A. Abul-Magd , Hesham M.H. Zakaly , Sameh A. Elhameed , Nancy N. Elewa , Shaaban M. Shaaban , Islam N. Fathy

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引用次数: 0

Abstract

This study investigates the structural and physical modifications induced by the incorporation of silver iodide (AgI) into a borate glass matrix. A glass series with the general formula ((75-x) B₂O₃ + 20PbO + 5MnO₂ + xAgI), where 0 ≤ x ≤ 2.0 mol% in increments of 0.5 mol%, was synthesized. The glass samples were examined using Fourier transform infrared (FT-IR), optical spectroscopy, density measurements, and other analytical tools. Furthermore, the radiation shielding proficiency of the investigated glass system was evaluated through Monte Carlo simulations and Phy-X software, focusing on parameters such as the linear attenuation coefficient (μ), mass attenuation coefficient (μ_m), half value layer (HV), etc. Experimental results revealed that increasing the AgI content from 0 to 2.0 mol% led to a 7.7% linear increase in density, rising from 3.12 to 3.36 g/cm³, while the molar volume decreased from 32.4 to 31.1 cm³/mol. FT-IR analysis indicated that AgI acts as a lattice modifier, facilitating the conversion of BO₄ units to BO₃ units and subsequently increasing the concentration of non-bridging oxygens (NBOs). These structural changes, alongside heightened internal lattice disorder, resulted in a reduction of 3.04% of the optical band gap from 2.96 to 2.87 eV. Optical spectra further demonstrated that Ag⁺ ions influence the coordination of manganese, favoring the transition of Mn²⁺ ions from tetrahedral to octahedral sites. Shielding analysis confirmed that the linear attenuation coefficient follows the order: BPbMnAg0.0 < BPbMnAg0.5 < BPbMnAg1.0 < BPbMnAg1.5 < BPbMnAg2.0. Additionally, calculated effective removal cross-sections indicated that increasing AgI concentrations significantly enhance fast neutron removal capacity. These findings suggest that AgI-doped manganese lead borate glasses are highly effective candidates for advanced photon and neutron shielding applications.

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通过碘化银改性来剪裁锰铅硼酸盐玻璃的光学和辐射屏蔽性能

本研究探讨了碘化银（AgI）掺入硼酸盐玻璃基体所引起的结构和物理修饰。合成了通式为（(75-x) B2O3 + 20PbO + 5MnO2 + xAgI）的玻璃系列，其中0≤x≤2.0 mol%，增量为0.5 mol%。使用傅里叶变换红外（FT-IR）、光谱学、密度测量和其他分析工具对玻璃样品进行了检测。此外，通过Monte Carlo模拟和Phy-X软件对所研究的玻璃系统的辐射屏蔽能力进行了评估，重点关注线性衰减系数（μ）、质量衰减系数（μm）、半值层（HV）等参数。实验结果表明，AgI含量从0增加到2.0 mol%，密度线性增加7.7%，从3.12上升到3.36 g/cm3，而摩尔体积从32.4下降到31.1 cm3/mol。FT-IR分析表明，AgI作为晶格修饰剂，促进BO4单元向BO3单元的转化，从而增加非桥接氧（NBOs）的浓度。这些结构变化，加上内部晶格无序性的增强，导致光学带隙从2.96 eV减小到2.87 eV，减小了3.04%。光谱进一步表明Ag+离子影响锰的配位，有利于Mn2+离子从四面体位向八面体位过渡。屏蔽分析证实线性衰减系数顺序为：BPbMnAg0.0 <； BPbMnAg0.5 <； BPbMnAg1.0 <； BPbMnAg1.5 <； BPbMnAg2.0。此外，计算出的有效去除截面表明，增加AgI浓度显著提高了快中子去除能力。这些发现表明，掺杂agi的锰铅硼酸盐玻璃是先进光子和中子屏蔽应用的高效候选者。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Radiation and Isotopes 工程技术-核科学技术

CiteScore

3.00

自引率

12.50%

发文量

406

审稿时长

13.5 months

期刊介绍： Applied Radiation and Isotopes provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and peaceful application of nuclear, radiation and radionuclide techniques in chemistry, physics, biochemistry, biology, medicine, security, engineering and in the earth, planetary and environmental sciences, all including dosimetry. Nuclear techniques are defined in the broadest sense and both experimental and theoretical papers are welcome. They include the development and use of α- and β-particles, X-rays and γ-rays, neutrons and other nuclear particles and radiations from all sources, including radionuclides, synchrotron sources, cyclotrons and reactors and from the natural environment. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. Papers dealing with radiation processing, i.e., where radiation is used to bring about a biological, chemical or physical change in a material, should be directed to our sister journal Radiation Physics and Chemistry.