A new hybrid mass spectrometer for the investigation of ion/molecule reactions

Abstract

Abstract An RF‐only quadrupole collision cell, fitted with retardation and acceleration lenses, has been installed in a field‐free region of a large‐scale tandem mass spectrometer. This new arrangement has allowed decelerated, mass‐selected ions ( ca . 5 eV kinetic energy) to react with reagent gases and reaccelerated, mass‐selected products ( ca . 8 keV) to be subsequently identified by collisional activation mass spectrometry. The system was tested by looking at ion/molecule reactions of cyclobutanone molecular ions, previously studied by FTICR mass spectrormetry.