Light Scattering Studies of Fractal Soot Aggregates in Flames

本提案的目的是发展静态和动态光散射技术，以表征火焰中的分形烟尘聚集体。目前基于分形理论的烟灰颗粒的光学性质将纳入拟议的技术。对烟灰簇进行几次静态散射/消光测量的结果将与从火焰中选择的烟灰簇进行比较，并通过电子显微照片进行观察。光子相关光谱学，这是Sorensen博士在这个项目中进一步发展的动态技术。该研究课题对于科学家理解烟尘的形成和光散射诊断具有重要意义，在燃烧和环境方面具有工程应用价值。

The objective of this proposal is to develop static and dynamic light scattering techniques for the characterization of fractal soot aggregates in flames. Current fractal-based theories for the optical properties of soot particles will be incorporated in the proposed techniques. The results from several static scattering/extinction measurements on soot clusters will be compared to soot clusters selected from flames and viewed by an electron micrograph. The Photon Correlation Spectroscopy, a dynamic technique to be further developed by Dr. Sorensen during this project. The research topic is important for scientist understanding of soot formation and of light scattering diagnostics, and has engineering applications in combustion and environment.