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Published online by Cambridge University Press: 12 April 2016
The composition of the inner coma is modeled assuming that about 30 chemical species composed of H, C, and O undergo reactions. Ionization and dissociation by solar radiation and over 100 forward and reverse reactions between atoms, molecules, and ions are considered in the kinetics. Vaporization from a simple H20 - C02 nucleus provides the initial composition of the gas near the surface.