Droplet Spectra Measurements with the FSSP-100. Part II: Coincidence Effects
Droplet Spectra Measurements with the FSSP-100. Part II: Coincidence Effects
复制标题
使用 FSSP-100 进行液滴光谱测量。
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
T. Perrin
中科院分区：
文献类型：
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作者：
Afraniode Araujo Coelho;J. Brenguier;T. Perrin
摘要在高液滴数浓度下，FSSP-100的液滴数浓度、液滴光谱和液态水含量的测量受到探头检测光束中粒子的重合和探头电子器件死区时间内计数损失的显著影响。在文献中已经提出了准确的统计程序，用于校正液滴数浓度估计中的重合和死区损失。然而，没有技术可用于校正光谱失真，因此，导出的液态水含量。本系列第一部分中描述的探测器功能模型现在用于随机模式，以模拟所有可能的巧合和死区时间损失事件。模拟器可以正确地再现观察到的特征，例如景深和光束边缘接受比随液滴浓度的变化。目前使用最多的三种T...
Abstract At high droplet number concentration, measurements of the droplet number concentration, of the droplet spectrum, and of the liquid water content with the FSSP-100 are significantly affected by the coincidences of particles in the probe’s detection beam and by count losses during the dead time of the probe’s electronics. Accurate statistical procedures have been proposed in the literature for the correction of the coincidence and dead-time losses in the estimation of the droplet number concentration. There are, however, no techniques available for correction of the spectral distortion, hence of the derived liquid water content. The model of probe functioning described in Part I of this series is now used on a stochastic mode in order to simulate all possible events of coincidences and dead-time losses. Observed features, such as variations of the depth of field and beam edge acceptance ratios with the droplet concentration, are correctly reproduced by the simulator. The three most currently used t...