An injector of charged liquid particles

Abstract

The design of an injector of charged liquid particles with diameters of 1–10 μm that move at velocities of up to 1400 m/s is described. The injector stably operates at a potential difference of 5–20 kV between the needle, on which charged droplets form, and the focusing electrode with a distance between the electrodes of 5–20 mm. The diameter of the metal needle was varied from 0.1 to 10 μm. Experiments showed that, depending on the needle length, the source can stably operate in two modes: at a needle length of ≤1.7 and ≥2.7 mm. The experimental technique and results are presented. The dependences of the characteristics of accelerated particles on the voltages across the plates of the electrostatic particle accelerator are determined. The experimental results are in good agreement with the computer simulation results.