Abstract
Ion-molecule reactions occurring in the drift tube of a time-of-flight mass spectrometer were studied using a retarding potential device and a second gas inlet on the drift tube. Metastable ion decomposition, induced dissociation and charge exchange reactions were observed for ions having an energy of 2800 eV. For the charge exchange process, the experimental determination of the ratio of the neutral and initial beam intensities permits calculation of the cross section. Cross sections obtained for nitrogen and argon are in good agreement with data from the literature. Cross sections for charge exchange between several organic ions and noble gases are reported.
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