The invention provides a multipole device for a mass spectrometer system.
In general, the multipole device contains a plurality of conductive rods
each comprising a conductive layer, a resistive layer, and an insulative
layer between the conductive and resistive layers. The invention finds
use in a variety of applications, including ion transport, ion
fragmentation and ion mass filtration. Accordingly, the invention may be
employed in a variety of mass spectrometer systems.