Ionic molecules, excitation of the reagent molecules in the RF only ion guide or ion trap for carrying out the ion-radical or ion-ion interaction experiments

摘要

A mass spectrometer is disclosed that includes an RF ion guide or ion trap and a device that is positioned and adapted to supply reagent gas within the RF ion guide or ion trap. The mass spectrometer includes a photoionization device and (i) fragments or dissociates the first ions in an RF ion guide or ion trap to form second ions and neutral molecules; and (ii) the photoionization device. And a control system arranged and adapted to photoionize and / or photoexcite the reagent gas to form reagent ions, excited species or radical species. Reagent ions, excited species or radical species interact with at least some of the neutral molecules in the RF ion guide or ion trap to form analyte ions. [Selection] Figure 1