Optical parameters and shielding attitude of sodium fluoride in calcium-borate glasses

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Optical and Quantum Electronics Pub Date : 2025-01-11 DOI:10.1007/s11082-024-07955-7

E. Khalil, G. El-Damrawi, Abdelghany A. M., R. M. Ramadan, Y. M. Moustafa

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Abstract

Borate glasses with compositions xCaO-(30-x)NaF-70B₂O₃ (x = 0–30 mol%, step 5) were synthesized and characterized to investigate the effects of partially substituting NaF with CaO on radiation shielding ability and optical properties. Density, molar volume, packing density, and free volume were measured and calculated. UV–visible spectroscopy was utilized to determine the optical bandgap and other correlated physical parameters. Moreover, different shielding parameters were evaluated using Phy-X simulation software. From data analyses, it was found that increasing CaO content transformed BO₃ to BO₄ structural units in the borate glass network, keeping the optical bandgap values between 3.76 and 3.55 eV. In addition, the refractive index varied from 2.32 to 2.4, while molar refractivity and Urbach energy were slightly increased with composition. Moreover, the replacement of NaF by CaO enhanced photon interaction cross-sections, reducing the mean free path and half-value layer. The work demonstrated that controlled additions of an intermediate oxide like CaO can tailor the radiation shielding and optical characteristics of borate glasses for potential applications as transparent radiation shielding materials.

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氟化钠在硼酸钙玻璃中的光学参数及屏蔽姿态

合成了含有xCaO-(30-x)NaF- 70b2o3 （x = 0-30 mol%，步骤5）的硼酸盐玻璃，并对其进行了表征，研究了CaO部分取代NaF对其辐射屏蔽能力和光学性能的影响。测量并计算密度、摩尔体积、堆积密度和自由体积。利用紫外可见光谱法测定了光带隙和其他相关物理参数。此外，利用Phy-X仿真软件对不同的屏蔽参数进行了评估。通过数据分析发现，随着CaO含量的增加，硼酸盐玻璃网络中的BO3结构单元转变为BO4结构单元，光学带隙值保持在3.76 ~ 3.55 eV之间。折射率在2.32 ~ 2.4之间变化，摩尔折射率和乌尔巴赫能量随组分的增加而增加。此外，用CaO取代NaF增强了光子相互作用截面，减少了平均自由程和半值层。这项工作表明，像CaO这样的中间氧化物的可控添加可以调整硼酸盐玻璃的辐射屏蔽和光学特性，作为透明辐射屏蔽材料的潜在应用。

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来源期刊

Optical and Quantum Electronics 工程技术-工程：电子与电气

CiteScore

4.60

自引率

20.00%

发文量

810

审稿时长

3.8 months

期刊介绍： Optical and Quantum Electronics provides an international forum for the publication of original research papers, tutorial reviews and letters in such fields as optical physics, optical engineering and optoelectronics. Special issues are published on topics of current interest. Optical and Quantum Electronics is published monthly. It is concerned with the technology and physics of optical systems, components and devices, i.e., with topics such as: optical fibres; semiconductor lasers and LEDs; light detection and imaging devices; nanophotonics; photonic integration and optoelectronic integrated circuits; silicon photonics; displays; optical communications from devices to systems; materials for photonics (e.g. semiconductors, glasses, graphene); the physics and simulation of optical devices and systems; nanotechnologies in photonics (including engineered nano-structures such as photonic crystals, sub-wavelength photonic structures, metamaterials, and plasmonics); advanced quantum and optoelectronic applications (e.g. quantum computing, memory and communications, quantum sensing and quantum dots); photonic sensors and bio-sensors; Terahertz phenomena; non-linear optics and ultrafast phenomena; green photonics.