洞察到斯威夫特重离子潜伏轨迹在PET片中的内部是什么
Adil Z Tuleushev1, Fiona E Harrison1, Artem L Kozlovskiy1,2
1Engineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan.
Polymers
|October 28, 2023
概括
接触电气化改变了PET薄膜.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物物理 聚合物物理
- 辐射化学 辐射化学
背景情况:
- 聚乙烯二甲 (PET) 薄膜是广泛使用的聚合物.
- 了解离子辐射和电气化对PET的影响对于先进的应用至关重要.
- 快速重离子 (SHI) 辐射产生具有独特特性的潜在轨迹.
研究的目的:
- 研究接触电气化对原始和辐射PET薄膜光学传输光谱的影响.
- 阐明内部电场和潜在轨迹在改变PET光学特性中的作用.
- 为了探索SHI潜伏轨道内的电荷分布.
主要方法:
- 对光学传输光谱的实验研究.
- 使用表面电极和内部薄膜电荷的非标准接触电气化.
- 用Kr+15离子对PET薄膜进行辐射 (1.75 MeV,3 × 10^10 cm^-2).
主要成果:
- 电气化减少了内部电场,并导致原始PET和辐射PET的光谱发生低色 (蓝色) 变化.
- 照射PET显示电气化后光学属性的高斯调制 (2.3-3.6 eV).
- 这种调制与由潜轨电场影响的联系统的衰变有关.
结论:
- 在PET中隐藏的轨迹可以被视为辐射的多频段材料.
- 结果表明,SHI潜伏轨道有一个负电荷的核心和一个正电荷的外围.
- 一个包含快速和缓慢电子的一致模型解释了观察到的现象.
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