ion/neutral species exchange reaction

in mass spectrometry
In this reaction an @[email protected] reaction is accompanied by the subsequent or simultaneous liberation of a different neutral species as product.
PAC, 1991, 63, 1541. (Recommendations for nomenclature and symbolism for mass spectroscopy (including an appendix of terms used in vacuum technology). (Recommendations 1991)) on page 1556 [Terms] [Paper]