Space-charge effects in nanoparticle processing using the differential mobility analyzer

被引：0
|
作者：
Camata, RP
Atwater, HA
Flagan, RC
机构：
[1] CALTECH, Thomas J Watson Lab Appl Phys, Pasadena, CA 91125 USA
[2] CALTECH, Div Chem & Chem Engn, Pasadena, CA 91125 USA
来源：
JOURNAL OF AEROSOL SCIENCE | 2001年 / 32卷 / 05期
关键词：
differential mobility analyzer; charged particles; space charge; ultrafine aerosols;
D O I：
暂无
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
We report the observation of mobility classification breakdown due to strong space-charge effects during nanoparticle processing in a radial differential mobility analyzer (DMA). A simple dimensionless group, the space-charge number, is introduced to help identify the conditions for which this phenomenon becomes important. Our analysis suggests a few DMA design features and operation conditions that should enable the accurate classification of ultrafine aerosols with high concentrations of charged particles. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：583 / 599
页数：17
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