Patent ID: 7675050

Claim:
A system comprising: an ion beam source for providing an ion beam; divergent extraction optics for diverging the ion beam; a mass analyzer magnet for receiving the diverging ion beam, wherein the diverging ion beam has a cross-section which is relatively tall and narrow and the taller dimension lies in a dispersive plane of the magnet; a collimator lens for halting the divergence of the ion beam from the mass magnet analyzer to render the beams parallel; deflector electrodes for the control and adjustment of electric fields along the beam path so as to cause the ion beam to follow a generally s-shaped path while being accelerated, so that the ions in the ion beam are accelerated to the final energy and a centroid of the beam after acceleration travels generally in the final direction, and intercepting undeflected neutral atoms or molecules and/or charged fragmented molecular ions so as to remove them from the ion beam.