A simple turbulent mixing CNC for charged particle detection down to 1.2 nm
A simple turbulent mixing CNC for charged particle detection down to 1.2 nm
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DOI：
10.1080/02786820490247560
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发表时间：
2004-01-01
影响因子：
5.2
通讯作者：
de la Mora, JF
中科院分区：
文献类型：
--
作者：
Sgro, LA;de la Mora, JF
对Okuyama等人的湍流混合凝聚核计数器(Cnc)的简单改进。使其能够将直径小于1.2 nm(迁移率直径1.7 nm)的正电荷粒子/离子生长为可见液滴。这种设计比它的前身Gamero和Fernandez de la Mora更简单，并具有较低的入口损失，尽管单分散粒子的激活效率曲线显示了两个步骤，导致当将CNC用作粒子定径器时，分辨率较低。通过邻苯二甲酸二丁酯蒸汽冷凝成功激活这种小物体，在很大程度上取决于在混合点之前和包括混合点之前在计算机控制系统中实现良好的热控制。
A simple modification of the turbulent mixing condensation nucleus counter (CNC) of Okuyama et al. enables it to grow positively charged particles/ions with diameters smaller than 1.2 nm (1.7 nm mobility diameter) into visible drops. The design is simpler than its predecessor of Gamero and Fernandez de la Mora and has lower inlet losses, though the activation efficiency curve for monodisperse particles exhibits two steps, leading to an inferior resolution when the CNC is used as a particle sizer. Successful activation of such small objects by dibutyl phthalate vapor condensation is highly dependent on achieving good thermal control in the sections of the CNC prior to and including the mixing point.