The structural and optical effects of copper (50 MeV) and carbon (70 MeV) ion irradiation of low density polyethylene (LDPE) are described. X-ray diffraction (XRD) and differential scanning calorimetric (DSC) techniques were used to explore the structural behavior, while Fourier transform infrared (FTIR) and UV-visible spectroscopies were used to collect the optical data. Structural parameters, such as interplanar separation, distortion factor, crystallite size and degree of crystallinity, were measured to understand the change in the structural behavior of LDPE caused by the swift heavy ion irradiation. In the irradiated polymeric samples, the formation and growth of new carbon enriched species were revealed by the FTIR and UV-visible analysis, which led to the decrease of their optical bandgap energy with the increase of ion fluence.

描述了低密度聚乙烯（LDPE）的铜（50 MeV）和碳（70 MeV）离子辐照的结构和光学效应。X射线衍射（XRD）和差示扫描量热（DSC）技术用于研究结构行为，而傅立叶变换红外（FTIR）和紫外可见光谱学用于收集光学数据。测量了诸如平面间距，畸变因子，微晶尺寸和结晶度等结构参数，以了解快速重离子辐照引起的LDPE结构行为的变化。在受辐照的聚合物样品中，通过FTIR和紫外可见分析揭示了新的富碳物质的形成和生长，这导致其光带隙能量随离子通量的增加而降低。