The Influence of Space Charge on the Transport of Charged Particles Generated during Electrospray in Crossed Gasdynamic and Electric Fields

• Published in: Technical physics letters Vol. 45; no. 2; pp. 149 - 151
• Main Authors: Gromov, I. A., Samsonova, N. S., Gall, N. R.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-02-2019; Springer Nature B.V
• Subjects: Charge transport; Charged particles; Charging; Classical and Continuum Physics; Computer simulation; Electric fields; Electrospraying; Mathematical models; Physics; Physics and Astronomy; Simulation; Space charge
• ISSN: 1063-7850; 1090-6533
• DOI: 10.1134/S1063785019020275

The transport of charged particles generated during electrospray in a longitudinal gasdynamic field has been studied in a model system comprising two coaxial electrodes and a collector grid. The process has been numerically simulated with omission of the role of a space charge. A comparison of the results shows that the space charge is a key factor determining the transport of charged particles: the model transport efficiency in the absence of space charge reaches 80–100%. In experiment, the efficiency strongly depends on the space charge and amounts to 70–80% for its minimum values, while decreasing to 20–30% with increasing electrospray current.