Experimental study of the effect of gas discharge on ionic liquid electrospray  

作　　者：石文 杨鹏飞 宋培义 吴健 Wen SHI;Pengfei YANG;Peiyi SONG;Jian WU(School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,People’s Republic of China;FAW-Volkswagen Automotive Co.Ltd.,Changchun 130011,People’s Republic of China;Center for Gravitational Experiments,School of Physics,Huazhong University of Science and Technology,Wuhan 430074,People’s Republic of China)

机构地区：[1]School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,People’s Republic of China [2]FAW-Volkswagen Automotive Co.Ltd.,Changchun 130011,People’s Republic of China [3]Center for Gravitational Experiments,School of Physics,Huazhong University of Science and Technology,Wuhan 430074,People’s Republic of China

出　　处：《Plasma Science and Technology》2024年第4期37-43,共7页等离子体科学和技术（英文版）

基　　金：supported by the National Key Research and Development Program of China(No.2020YFC2201004);National Natural Science Foundation of China(No.12172110)。

摘　　要：Ionic liquid electrospray(ILE) in an atmospheric environment is often accompanied by the gas discharge phenomenon. It interferes with the normal operation of the electrospray and the measurement of experimental parameters. In this study, electrospray experiments were conducted on the ionic liquid EMI-BF4. The observations revealed that the operating modes of the ionic liquid depend on the voltage polarity at high voltages. Additionally, a correspondence between the operating mode of ILE and the current signal in the circuit was established. The shape of the liquid cone formed at the needle tip bore a striking resemblance to the plume of corona discharge, suggesting that the motion trajectory of electrons influenced the curvature of the liquid cone. Steamer theory provided a clear explanation for the change in curvature as the voltage increased.

关 键 词：ionic liquid ELECTROSPRAY Taylor cone jet corona discharge 

分 类 号：O461[理学—电子物理学] O361.4[理学—物理]