Determination of the Refractive Indices of Soot Particles from Light Scattering Measurements in Flames

这项研究涉及辐射传热学；其目的是开发一种技术，首次能够通过光散射测量同时确定火焰中碳烟颗粒的折射率、大小和浓度。了解烟尘颗粒的折射率是确定火焰的辐射换热和利用激光诊断评估火焰中碳的形成和生长机制所必需的。在火焰条件下确定这些指数是一个艰巨的问题，尚未确定可靠的数值。在这项拟议的研究中，将开发一种从原位光学测量推断折射率的技术。

This investigation concerns radiative heat transfer; its purpose is to develop a technique which will allow, for the first time, a simultaneous determination of the refractive index, size and concentration of soot particles in flames from light scattering measurements. Knowledge of the refractive indices of soot particles is required for determining radiative heat transfer from flames and for assessing the mechanism of carbon formation and growth in flames using laser diagnostics. Determination of these indices under flame conditions is a formidable problem and reliable values have yet to be established. In the proposed study, a technique for inferring refractive indices from in-situ optical measurements will be developed.