高压电器2012，Vol.48Issue(5)：33-36,4.
一种“多针—网”结构的离子风特性研究
Characteristics of Ionic Wind Excited by Multiple Needles-Net Structure
摘要
Abstract
Based on the principle of negative corona discharge, a multiple needles-net structure was designed. When voltage of -4 310 V is applied to the needle electrodes and the net electrode is earthed, this structure can excite ionic wind at a speed of 1.1 m/s. Micro-current measurement of the ionic wind was conducted by using the mechanical Faraday cup, and the highest current intensity approached to -10 nA. However, the dark current of the device was only -40 pA before exerting high voltage. The experimental results show that this multiple needles-net structure can ionize a sample, and force the sample ions to move with the flow of ionic wind into a sampler. The present structure can combine the ion source and the sampler in a conventional mass spectrograph into one, which facilitates process of mass spectrometric analysis and reduces volume of the mass spectrograph. Consequently, it may be applied to portable mass spectrograph with real-time and on-line analysis.关键词
进样系统/离子风/电晕放电/针网结构Key words
sampler/ ionic wind/ corona discharge/ needle-net structure分类
信息技术与安全科学引用本文复制引用
龚涛,唐飞,王晓浩..一种“多针—网”结构的离子风特性研究[J].高压电器,2012,48(5):33-36,4.基金项目
国家自然科学基金仪器专项(20827007) （20827007）
国家973项目(2007CB310504) （2007CB310504）
深圳市生物、互联网、新能源产业发展专项资金基础研究项目(JC201005280634A). （JC201005280634A）
