in mass spectrometry
An ion/neutral species process wherein there is an increase in the reactant ion's
at the expense of the translational energy of either (or both) of the reacting species.
The scattering angle
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