Table 2

Reactions that result from collisions between ions, neutrals, and electrons in a coma.

Number Type Example
(R1) Ion-neutral charge transfer H2O + H2O H2Ofast + H2O+
(R2) Ion-neutral chemistry H2O+ + H2O H3O+ + HO
(R3) Ionization H + H2O H + H2O+ + e
(R4) Electron removal O + H2O O+ + H2O + e
(R5) Electron-ion dissociation recombination H3O+ + e HO + 2H
(R6) Ion-ion Coulomb interaction H2O+ + H2O+ H2O+ + H2O+

Notes. These reactions are related to different types of collisionopause boundaries (Cravens 1991).

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