Measurement of Number Density of Water Droplets in Aerosol by Laser-Induced Breakdown
Measurement of Number Density of Water Droplets in Aerosol by Laser-Induced Breakdown
复制标题
激光诱导击穿法测量气溶胶中水滴的数密度
DOI：
10.1143/apex.3.036601
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
M. Kakehata
中科院分区：
文献类型：
--
作者：
H. Yashiro;F. Sasaki;M. Kakehata
用激光诱导击穿法测量了从喷嘴喷出的气溶胶中液滴的数密度。该测量利用液滴和空气之间的击穿阈值强度的大差异。从击穿阈值和实际激光强度以及激光聚焦参数来评估液滴的强度超过击穿阈值的体积。通过击穿概率和泊松分布来评估体积中的液滴数量。该方法具有很高的时间和空间分辨率，这取决于激光脉冲的持续时间和激光聚焦条件，分别。
Number density of droplets in an aerosol ejected from a spray nozzle is experimentally measured by laser-induced breakdown. This measurement utilizes the large difference of the breakdown threshold intensities between droplets and air. The volume in which the intensity exceeds the breakdown threshold for droplets is evaluated from the breakdown threshold and the actual laser intensities, and laser focusing parameters. The number of droplets in the volume is evaluated by the breakdown probability and Poisson distribution. This method has high temporal and spatial resolution depending on the laser pulse duration and the laser focusing condition, respectively.