| When a meniscus is formed at the free end of a capillary tube and is subjected to the effect of a sufficiently intense electric field, the meniscus may display the shape of a cone. Depending upon the experiment conditions, a field effect charge emission, the production of droplets or corona discharge may be observed at the apex of the cone. The cone shape is essential to generate the first two phenomena. In this study, the profiles of electrified menisci were calculated taking account of the regulating effect that charge emission may exert on the electric field at the apex of the cone. The calculations particularly show that conical meniscus equilibrium is possible over a whole range of electric potential and hydrostatic pressure values. |
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