This study explores the influence of gamma radiation on the optical properties of PMMA composites doped with aluminum (Al) at varying concentrations. The composites were irradiated with gamma doses of 50, 100, and 200 Gy, and their optical responses were systematically analyzed using UV–Vis spectroscopy. The results reveal a pronounced dependence of both the absorption coefficient and optical band gap on the Al doping level and radiation dose. Notably, increased Al content and higher radiation exposure enhance the material’s absorption capacity while concurrently reducing the optical band gap, indicative of significant alterations in the electronic structure.

中文翻译：

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γ 辐射对不同 Al 浓度 PMMA 复合材料光学性能的影响


本研究探讨了伽马辐射对不同浓度掺杂铝 （Al） 的 PMMA 复合材料光学性能的影响。用 50、100 和 200 Gy 的 γ 剂量照射复合材料，并使用紫外-可见光谱系统分析其光学响应。结果表明，吸收系数和光学带隙对 Al 掺杂能级和辐射剂量具有明显的依赖性。值得注意的是，增加的 Al 含量和更高的辐射暴露增强了材料的吸收能力，同时减小了光学带隙，表明电子结构发生了重大变化。