Abstract In this paper, a pin-cylinder charger was employed to investigate the electrostatic field characteristic and its influence on submicron particle charging in positive and negative voltage polarity, respectively. The submicron particle's charging characteristics were also investigated thoroughly, including polarity, gas velocity, applied voltage, and injection position. Results showed that the increase of the applied voltage was proved a useful approach to enhance particle charging, especially for positive polarity. A 0.4 μm diameter particle achieved about a 60% increase from 5 kV to 8 kV. The negative polarity had advantages on particle charging, whose superiority could reach approximately 15% for 0.1 μm diameter particle in 8 kV voltage. The particle trajectory was a helpful bond to connect the particle charging with the electrostatic field, which decided the charging number and charging rate through the different distribution and intensity in two polarity conditions.

中文翻译：

---

考虑电压极性的小型充电器静电场数值模拟及其对亚微米粒子带电的影响

摘要 本文采用针筒充电器分别研究了正负电压极性下的静电场特性及其对亚微米粒子充电的影响。还彻底研究了亚微米颗粒的充电特性，包括极性、气体速度、施加的电压和注入位置。结果表明，增加外加电压被证明是一种增强粒子充电的有用方法，特别是对于正极性。0.4 μm 直径的颗粒实现了从 5 kV 到 8 kV 约 60% 的增加。负极性对颗粒充电具有优势，在 8 kV 电压下，对于直径为 0.1 μm 的颗粒，其优势可达到约 15%。