Ion-analyzing device for ejecting stored ions on-axis selected by bulk from linear ion traps has apertures, an ion detector and an ion trap made up of high-frequency-wired pole rods

摘要

A rod system has pole rods (10,11) each with three front screens (12-14). A direct-current voltage potential that sheathes a rod system shapes the potential of a longitudinal axis in a rod system in such a way that a minimum of potential in the rod system axis occurs at the end of the rod system in front of connection apertures, where ions collect with their movement reduced by gas vaporization. An Independent claim is also included for a method for analyzing ions with an ion trap made up of high-frequency-wired pole rods and apertures attached on a front side and with an ion detector for ejected ions outside the apertures.