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Table A.1.

Processes considered in the chemical model for Type II-P SN ejecta (adapted from Biscaro & Cherchneff (2014)).

Reaction description Gas regime/location

THERMAL
Bimolecular AB+ C BC + A Neutral exchange High temperature
A + B AB + hν Radiative association T independent
AB + M A + B + M Collision dissociation High density
AB+ + C BC+ + A Ion−Molecule T independent
AB+ + C AB + C+ Charge exchange T independent
A + + e A + hν Radiative recombination T independent
AB + + e A + B Dissociative recombination T independent

Termolecular A + B + M AB + M Three-body association High density

NON-THERMAL

A + CE A+ + e + CE Ionisation by Compton e Entire SN ejecta
AB + CE A + B + CE Dissociation by Compton e Entire SN ejecta
AB + CE A+ + B + e+ CE Ionisation by Compton e Entire SN ejecta
AB + CE A + B+ + e+ CE Ionisation by Compton e Entire SN ejecta

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