Ionizing apparatus

摘要

The present Invention provides an ionization apparatus comprising an electrospray assembly 120 in an ionization chamber 110. Within the ionization chamber there are two electrodes 130, 135, each providing an associated electric field region. The first electrode 130 produces an electric field region which attracts the charged droplets from the electrospray tip 123 and the second electrode 135 produces an electric field region which repels the charged droplets. Furthermore there is a gas flow apparatus 124 provided which provides the charged droplets with sufficient velocity to overcome the repulsive forces of the second electric field region. This enables the charged droplets to pass through an interface 153 into a vacuum chamber 190 to be analyzed by apparatus such as a mass spectrometer 220.