Molecular Hydrogen and Collisional-Radiative Modeling

For hydrogen, a CR-model for H2 and H is provided by Sawada [16] and was extended by Greenland and Reiter [17]. The model is described 

Typical results of such models are effective rate coefficients which depend not only on Te but also on ne and the vibrational population in the ground state. The importance of the vibrational population on some effective rate coefficients can be seen in Fig. 4.5. Especially for low Te, the enhancement can exceed one order of magnitude. Details of the calculation of vibrational populations are described in Sect. 4.4.1. For the analysis of radiation it is very convenient to apply the aforementioned corona model formula in which the pure excitation rate coefficient is replaced by the effective rate coefficient. 

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