在孤立的1-cyanonaphthalene中从等离子体共振中获得的自离化
James N Bull1,2, Paola Bolognesi3, Cate S Anstöter4
1School of Chemistry, Norwich Research Park, University of East Anglia, Norwich NR4 7TJ, United Kingdom.
The Journal of chemical physics
|June 22, 2023
概括
像1-纳 (1-CNN) 这样的多环芳碳化合物对太空辐射具有抗性. 它们的有机结构能够在VUV和XUV照射下生存下来,帮助它们在星际环境中生存.
科学领域:
- 天体化学是天体化学.
- 物理化学 物理化学
- 量子化学 是一个量子化学.
背景情况:
- 多环芳 (PAH) 在太空中非常丰富.
- 无线电天文学在金牛座分子云-1.0中检测到纳乙烯异构体.
- 了解PAH光离子化动态对于星际化学至关重要.
研究的目的:
- 研究1-纳 (1-CNN) 的光离子化动力学.
- 确定1-CNN对真空紫外线 (VUV) 和柔软极紫外线 (XUV) 辐射的抗性.
- 评估PAHs在星际环境中生存的潜力.
主要方法:
- 同步辐射被用来探测1-CNN在9.019.5 eV的能量范围内.
- 测量了光电离的截面和光电子的角分布.
- 进行了ezDyson模型模拟,以分析光弹射动态.
主要成果:
- 由等离子体共振引起的快速自离子化在11.516.0 eV之间的1-CNN光物理中占主导地位.
- 在微秒时间尺度上观察到最小的光诱导解离.
- 模拟显示了直接光电离的截面和光电子的角分布.
结论:
- 1-CNN的有机骨干对VUV和柔软的XUV光破坏有弹性.
- 通过反复光来有效稳定1-CNN离子,有助于它们的生存.
- 这些发现表明太空中小型PAHs的共同生存机制.
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