ion-pair formation

in mass spectrometry
https://doi.org/10.1351/goldbook.I03232
Involves an @[email protected] process in which a positive fragment ion and a negative fragment ion are among the products.
Source:
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 1548 [Terms] [Paper]