collisional excitation

in mass spectrometry
An ion/neutral species process wherein there is an increase in the reactant ion's @[email protected] at the expense of the translational energy of either (or both) of the reacting species. The @[email protected] may be large.
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 1555 [Terms] [Paper]