Radio-frequency-free hybrid electrostatic/magnetostatic cell for transporting, trapping, and dissociating ions in mass spectrometers

摘要

Mass spectrometry cells include one or more interleaved magnetostatic and electrostatic lenses. In some examples, the electrostatic lenses are based on electrical potentials applied to magnetostatic lens pole pieces. In other alternatives, the electrostatic lenses can include conductive apertures. Applied voltages can be selected to trap or transport charged particles, and photon sources, gas sources, ion sources, and electron sources can be provided for various dissociation processes.

主权项

1. A radio-frequency-free cell, comprising, from a first end to a second end along a longitudinal axis:
an electron source; a first conductive aperture coupled to a first electrical potential; a first magnetostatic lens comprising only a single magnet; and a second conductive aperture coupled to a second electrical potential, wherein the first and second conductive apertures are disposed externally to and on opposing sides of the magnetostatic lens, and wherein the first and second conductive apertures and the magnetostatic lens define a radio-frequency-free cavity for charged particle interaction that extends along the axis.