Thermo Finnigan LLC

Wayne Leslie Sheils

Alexander A Makarov

Kevin Hunter

Stephen Davis

Richard Whitney Stresau

An ion detection arrangementfor a time-of-flight (TOF) mass spectrometerincludes a beam splitter formed as a meshat the end of the TOF acceleration and detection chamber. Ions enter the detection arrangement through a common entrance window and are then divided by the beam splitter. Those ions striking the meshgenerate secondary electronswhich are detected by a microchannel plate forming a first detector. Those ions passing through the ion beam splitter are detected directly by a second detectoralso formed from a microchannel plate. The two detectors are each connected to a corresponding data acquisition systemand the data obtained by each are combined to generate a mass spectrum. The problems of detector saturation are thus avoided.

Growing community of inventors

Baulkham Hills, Australia

Wayne Leslie Sheils