In Situ Characterization of Ultrafine Chain Aggregate Aerosols Using Photo Correlation Spectroscopy

摘要9529359 D.T.肖，纽约州立大学布法罗分校 本文提出了将光相关光谱（PCS）技术的应用扩展到更细链状聚集气溶胶的原位测量，并确定其操作条件。 另一个目的是获得信息的时间演变的超细颗粒和链聚集体的生长后，建立的实验技术的局限性。 将使用透射电子显微镜（TEM）对气溶胶样品的结果进行校准，以确定颗粒/链尺寸和形状分布。 将使用稳定且可再现的链聚集氧化铁气溶胶发生器。 PCS激光束将被聚焦到约100微米的小光束宽度，并且其位置将在距气溶胶源的不同距离处变化，以监测颗粒聚集体尺寸的演变。 这项工作具有特殊的相关性，在线测量和控制在工业中，在实验室实验中，以及用于测试颗粒生长的理论模型。 ***

Abstract 9529359 D.T. Shaw, SUNY at Buffalo It is proposed to extend the application of the Photo Correlation Spectroscopy (PCS) technique to in-situ measurement of finer chain-like aggregation aerosols and to determine its operating conditions. Another objective is to obtain information on the time evolution of ultrafine particle and chain aggregate growth after establishing the limitations of the experimental technique. The results will be calibrated using Transmission Electron Microscopy (TEM) on aerosol samples to determine both particle/chain size and shape distributions. A stable and reproducible chain aggregate iron oxide aerosol generator will be used. The PCS laser beam will be focused to a small beam width of about 100 microns, and its position will be varied at different distances from the aerosol source in order to monitor the evolution of particle aggregate size. The work has special relevance to on-line measurements and control in industry, in laboratory experiments, as well as for testing theoretical models for particle grow. ***