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Effect of pressure on electrospray characteristics

Domenii publicaţii > Fizica + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Ioan Marginean, Jason S. Page, Ryan T. Kelly, Keqi Tang, Richard D. Smith

Editorial: Applied Physics Letters, 95 (18), p.184103, 2009.


An experimental study of pulsating electrosprays operated at subambient pressure is reported. The pressure domain that affords stable electrospray operation appears to be limited by the vapor pressure of the liquid. The voltage driving the electrospray is shown to have a logarithmic dependence on pressure. The observed scaling amends the relationship currently used to calculate the electric field at the tip of the meniscus of an electrified liquid.

Cuvinte cheie: low-pressure electrospray, ionization, desolvation, mass spectrometry