Improvements of Droplet Size Distribution Measurements with the Fast-FSSP (Forward Scattering Spectrometer Probe)
Improvements of Droplet Size Distribution Measurements with the Fast-FSSP (Forward Scattering Spectrometer Probe)
复制标题
使用 Fast-FSSP（前向散射光谱仪探头）改进液滴尺寸分布测量
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
Perry Weschler
中科院分区：
文献类型：
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作者：
J. Brenguier;T. Bourrianne;Afraniode Araujo Coelho;J. Isbert;Robert Peytavi;Dominique Trevarin;Perry Weschler
摘要本文讨论了单粒子测量的基本原理，并用前向散射光谱仪探针（FSSP）及其改进型快速FSSP测量液滴尺寸分布来说明。不确定性的各种来源依次分析：颗粒群的不完全采样的统计显著性、由于颗粒的重合和计数器的电子死时间引起的计数损失、由重合引起的尺寸分布的人为加宽、探针的敏感体积的不均匀性、米氏散射曲线的模糊性、采样体积的误差，以及最后，仪器尺寸校准的不确定性。它表明与快速FSSP收集的数据的例子，额外的参数，如脉冲持续时间和检测之间的到达间隔时间，是至关重要的，以提高粒子的大小和检索的空间平均值。
Abstract The basics of single particle measurements are discussed and illustrated with measurements of the droplet size distribution with an optical spectrometer, the Forward Scattering Spectrometer Probe (FSSP), and its improved version, the Fast-FSSP. The various sources of uncertainties are successively analyzed: the statistical significance of an incomplete sampling of the particle population, counting losses due to coincidence of particles and electronic dead time of the counter, artificial broadening of the size distributions by the coincidences, inhomogeneities of the sensitive volume of the probe, ambiguities of the Mie scattering curve, errors on the sampled volume, and, finally, the uncertainties on the size calibration of the instrument. It is demonstrated with examples of data collected with the Fast-FSSP that additional parameters, such as the pulse duration and the interarrival times between detections, are crucial for improving the sizing of the particles and the retrieval of the spatial ev...